platform/kernel/linux-rpi.git
5 years agodma-mapping: truncate dma masks to what dma_addr_t can hold
Christoph Hellwig [Mon, 29 Apr 2019 14:16:42 +0000 (09:16 -0500)]
dma-mapping: truncate dma masks to what dma_addr_t can hold

The dma masks in struct device are always 64-bits wide.  But for builds
using a 32-bit dma_addr_t we need to ensure we don't store an
unsupportable value.  Before Linux 5.0 this was handled at least by
the ARM dma mapping code by never allowing to set a larger dma_mask,
but these days we allow the driver to just set the largest supported
value and never fall back to a smaller one.  Ensure this always works
by truncating the value.

Fixes: 9eb9e96e97b3 ("Documentation/DMA-API-HOWTO: update dma_mask sections")
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agoiommu/dma: Apply dma_{alloc,free}_contiguous functions
Nicolin Chen [Mon, 3 Jun 2019 22:52:59 +0000 (15:52 -0700)]
iommu/dma: Apply dma_{alloc,free}_contiguous functions

This patch replaces dma_{alloc,release}_from_contiguous() with
dma_{alloc,free}_contiguous() to simplify those function calls.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agodma-remap: Avoid de-referencing NULL atomic_pool
Florian Fainelli [Mon, 10 Jun 2019 22:54:37 +0000 (15:54 -0700)]
dma-remap: Avoid de-referencing NULL atomic_pool

With architectures allowing the kernel to be placed almost arbitrarily
in memory (e.g.: ARM64), it is possible to have the kernel resides at
physical addresses above 4GB, resulting in neither the default CMA area,
nor the atomic pool from successfully allocating. This does not prevent
specific peripherals from working though, one example is XHCI, which
still operates correctly.

Trouble comes when the XHCI driver gets suspended and resumed, since we
can now trigger the following NPD:

[   12.664170] usb usb1: root hub lost power or was reset
[   12.669387] usb usb2: root hub lost power or was reset
[   12.674662] Unable to handle kernel NULL pointer dereference at virtual address 00000008
[   12.682896] pgd = ffffffc1365a7000
[   12.686386] [00000008] *pgd=0000000136500003, *pud=0000000136500003, *pmd=0000000000000000
[   12.694897] Internal error: Oops: 96000006 [#1] SMP
[   12.699843] Modules linked in:
[   12.702980] CPU: 0 PID: 1499 Comm: pml Not tainted 4.9.135-1.13pre #51
[   12.709577] Hardware name: BCM97268DV (DT)
[   12.713736] task: ffffffc136bb6540 task.stack: ffffffc1366cc000
[   12.719740] PC is at addr_in_gen_pool+0x4/0x48
[   12.724253] LR is at __dma_free+0x64/0xbc
[   12.728325] pc : [<ffffff80083c0df8>] lr : [<ffffff80080979e0>] pstate: 60000145
[   12.735825] sp : ffffffc1366cf990
[   12.739196] x29: ffffffc1366cf990 x28: ffffffc1366cc000
[   12.744608] x27: 0000000000000000 x26: ffffffc13a8568c8
[   12.750020] x25: 0000000000000000 x24: ffffff80098f9000
[   12.755433] x23: 000000013a5ff000 x22: ffffff8009c57000
[   12.760844] x21: ffffffc13a856810 x20: 0000000000000000
[   12.766255] x19: 0000000000001000 x18: 000000000000000a
[   12.771667] x17: 0000007f917553e0 x16: 0000000000001002
[   12.777078] x15: 00000000000a36cb x14: ffffff80898feb77
[   12.782490] x13: ffffffffffffffff x12: 0000000000000030
[   12.787899] x11: 00000000fffffffe x10: ffffff80098feb7f
[   12.793311] x9 : 0000000005f5e0ff x8 : 65776f702074736f
[   12.798723] x7 : 6c2062756820746f x6 : ffffff80098febb1
[   12.804134] x5 : ffffff800809797c x4 : 0000000000000000
[   12.809545] x3 : 000000013a5ff000 x2 : 0000000000000fff
[   12.814955] x1 : ffffff8009c57000 x0 : 0000000000000000
[   12.820363]
[   12.821907] Process pml (pid: 1499, stack limit = 0xffffffc1366cc020)
[   12.828421] Stack: (0xffffffc1366cf990 to 0xffffffc1366d0000)
[   12.834240] f980:                                   ffffffc1366cf9e0 ffffff80086004d0
[   12.842186] f9a0: ffffffc13ab08238 0000000000000010 ffffff80097c2218 ffffffc13a856810
[   12.850131] f9c0: ffffff8009c57000 000000013a5ff000 0000000000000008 000000013a5ff000
[   12.858076] f9e0: ffffffc1366cfa50 ffffff80085f9250 ffffffc13ab08238 0000000000000004
[   12.866021] fa00: ffffffc13ab08000 ffffff80097b6000 ffffffc13ab08130 0000000000000001
[   12.873966] fa20: 0000000000000008 ffffffc13a8568c8 0000000000000000 ffffffc1366cc000
[   12.881911] fa40: ffffffc13ab08130 0000000000000001 ffffffc1366cfa90 ffffff80085e3de8
[   12.889856] fa60: ffffffc13ab08238 0000000000000000 ffffffc136b75b00 0000000000000000
[   12.897801] fa80: 0000000000000010 ffffff80089ccb92 ffffffc1366cfac0 ffffff80084ad040
[   12.905746] faa0: ffffffc13a856810 0000000000000000 ffffff80084ad004 ffffff80084b91a8
[   12.913691] fac0: ffffffc1366cfae0 ffffff80084b91b4 ffffffc13a856810 ffffff80080db5cc
[   12.921636] fae0: ffffffc1366cfb20 ffffff80084b96bc ffffffc13a856810 0000000000000010
[   12.929581] fb00: ffffffc13a856870 0000000000000000 ffffffc13a856810 ffffff800984d2b8
[   12.937526] fb20: ffffffc1366cfb50 ffffff80084baa70 ffffff8009932ad0 ffffff800984d260
[   12.945471] fb40: 0000000000000010 00000002eff0a065 ffffffc1366cfbb0 ffffff80084bafbc
[   12.953415] fb60: 0000000000000010 0000000000000003 ffffff80098fe000 0000000000000000
[   12.961360] fb80: ffffff80097b6000 ffffff80097b6dc8 ffffff80098c12b8 ffffff80098c12f8
[   12.969306] fba0: ffffff8008842000 ffffff80097b6dc8 ffffffc1366cfbd0 ffffff80080e0d88
[   12.977251] fbc0: 00000000fffffffb ffffff80080e10bc ffffffc1366cfc60 ffffff80080e16a8
[   12.985196] fbe0: 0000000000000000 0000000000000003 ffffff80097b6000 ffffff80098fe9f0
[   12.993140] fc00: ffffff80097d4000 ffffff8008983802 0000000000000123 0000000000000040
[   13.001085] fc20: ffffff8008842000 ffffffc1366cc000 ffffff80089803c2 00000000ffffffff
[   13.009029] fc40: 0000000000000000 0000000000000000 ffffffc1366cfc60 0000000000040987
[   13.016974] fc60: ffffffc1366cfcc0 ffffff80080dfd08 0000000000000003 0000000000000004
[   13.024919] fc80: 0000000000000003 ffffff80098fea08 ffffffc136577ec0 ffffff80089803c2
[   13.032864] fca0: 0000000000000123 0000000000000001 0000000500000002 0000000000040987
[   13.040809] fcc0: ffffffc1366cfd00 ffffff80083a89d4 0000000000000004 ffffffc136577ec0
[   13.048754] fce0: ffffffc136610cc0 ffffffffffffffea ffffffc1366cfeb0 ffffffc136610cd8
[   13.056700] fd00: ffffffc1366cfd10 ffffff800822a614 ffffffc1366cfd40 ffffff80082295d4
[   13.064645] fd20: 0000000000000004 ffffffc136577ec0 ffffffc136610cc0 0000000021670570
[   13.072590] fd40: ffffffc1366cfd80 ffffff80081b5d10 ffffff80097b6000 ffffffc13aae4200
[   13.080536] fd60: ffffffc1366cfeb0 0000000000000004 0000000021670570 0000000000000004
[   13.088481] fd80: ffffffc1366cfe30 ffffff80081b6b20 ffffffc13aae4200 0000000000000000
[   13.096427] fda0: 0000000000000004 0000000021670570 ffffffc1366cfeb0 ffffffc13a838200
[   13.104371] fdc0: 0000000000000000 000000000000000a ffffff80097b6000 0000000000040987
[   13.112316] fde0: ffffffc1366cfe20 ffffff80081b3af0 ffffffc13a838200 0000000000000000
[   13.120261] fe00: ffffffc1366cfe30 ffffff80081b6b0c ffffffc13aae4200 0000000000000000
[   13.128206] fe20: 0000000000000004 0000000000040987 ffffffc1366cfe70 ffffff80081b7dd8
[   13.136151] fe40: ffffff80097b6000 ffffffc13aae4200 ffffffc13aae4200 fffffffffffffff7
[   13.144096] fe60: 0000000021670570 ffffffc13a8c63c0 0000000000000000 ffffff8008083180
[   13.152042] fe80: ffffffffffffff1d 0000000021670570 ffffffffffffffff 0000007f917ad9b8
[   13.159986] fea0: 0000000020000000 0000000000000015 0000000000000000 0000000000040987
[   13.167930] fec0: 0000000000000001 0000000021670570 0000000000000004 0000000000000000
[   13.175874] fee0: 0000000000000888 0000440110000000 000000000000006d 0000000000000003
[   13.183819] ff00: 0000000000000040 ffffff80ffffffc8 0000000000000000 0000000000000020
[   13.191762] ff20: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
[   13.199707] ff40: 0000000000000000 0000007f917553e0 0000000000000000 0000000000000004
[   13.207651] ff60: 0000000021670570 0000007f91835480 0000000000000004 0000007f91831638
[   13.215595] ff80: 0000000000000004 00000000004b0de0 00000000004b0000 0000000000000000
[   13.223539] ffa0: 0000000000000000 0000007fc92ac8c0 0000007f9175d178 0000007fc92ac8c0
[   13.231483] ffc0: 0000007f917ad9b8 0000000020000000 0000000000000001 0000000000000040
[   13.239427] ffe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[   13.247360] Call trace:
[   13.249866] Exception stack(0xffffffc1366cf7a0 to 0xffffffc1366cf8d0)
[   13.256386] f7a0: 0000000000001000 0000007fffffffff ffffffc1366cf990 ffffff80083c0df8
[   13.264331] f7c0: 0000000060000145 ffffff80089b5001 ffffffc13ab08130 0000000000000001
[   13.272275] f7e0: 0000000000000008 ffffffc13a8568c8 0000000000000000 0000000000000000
[   13.280220] f800: ffffffc1366cf960 ffffffc1366cf960 ffffffc1366cf930 00000000ffffffd8
[   13.288165] f820: ffffff8009931ac0 4554535953425553 4544006273753d4d 3831633d45434956
[   13.296110] f840: ffff003832313a39 ffffff800845926c ffffffc1366cf880 0000000000040987
[   13.304054] f860: 0000000000000000 ffffff8009c57000 0000000000000fff 000000013a5ff000
[   13.311999] f880: 0000000000000000 ffffff800809797c ffffff80098febb1 6c2062756820746f
[   13.319944] f8a0: 65776f702074736f 0000000005f5e0ff ffffff80098feb7f 00000000fffffffe
[   13.327884] f8c0: 0000000000000030 ffffffffffffffff
[   13.332835] [<ffffff80083c0df8>] addr_in_gen_pool+0x4/0x48
[   13.338398] [<ffffff80086004d0>] xhci_mem_cleanup+0xc8/0x51c
[   13.344137] [<ffffff80085f9250>] xhci_resume+0x308/0x65c
[   13.349524] [<ffffff80085e3de8>] xhci_brcm_resume+0x84/0x8c
[   13.355174] [<ffffff80084ad040>] platform_pm_resume+0x3c/0x64
[   13.360997] [<ffffff80084b91b4>] dpm_run_callback+0x5c/0x15c
[   13.366732] [<ffffff80084b96bc>] device_resume+0xc0/0x190
[   13.372205] [<ffffff80084baa70>] dpm_resume+0x144/0x2cc
[   13.377504] [<ffffff80084bafbc>] dpm_resume_end+0x20/0x34
[   13.382980] [<ffffff80080e0d88>] suspend_devices_and_enter+0x104/0x704
[   13.389585] [<ffffff80080e16a8>] pm_suspend+0x320/0x53c
[   13.394881] [<ffffff80080dfd08>] state_store+0xbc/0xe0
[   13.400094] [<ffffff80083a89d4>] kobj_attr_store+0x14/0x24
[   13.405655] [<ffffff800822a614>] sysfs_kf_write+0x60/0x70
[   13.411128] [<ffffff80082295d4>] kernfs_fop_write+0x130/0x194
[   13.416954] [<ffffff80081b5d10>] __vfs_write+0x60/0x150
[   13.422254] [<ffffff80081b6b20>] vfs_write+0xc8/0x164
[   13.427376] [<ffffff80081b7dd8>] SyS_write+0x70/0xc8
[   13.432412] [<ffffff8008083180>] el0_svc_naked+0x34/0x38
[   13.437800] Code: 92800173 97f6fb9e 17fffff5 d1000442 (f8408c03)
[   13.444033] ---[ end trace 2effe12f909ce205 ]---

The call path leading to this problem is xhci_mem_cleanup() ->
dma_free_coherent() -> dma_free_from_pool() -> addr_in_gen_pool. If the
atomic_pool is NULL, we can't possibly have the address in the atomic
pool anyway, so guard against that.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agoMIPS: use the generic uncached segment support in dma-direct
Christoph Hellwig [Sun, 28 Apr 2019 18:57:39 +0000 (13:57 -0500)]
MIPS: use the generic uncached segment support in dma-direct

Stop providing the arch alloc/free hooks and just expose the segment
offset instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Burton <paul.burton@mips.com>
5 years agodma-direct: provide generic support for uncached kernel segments
Christoph Hellwig [Mon, 3 Jun 2019 06:43:51 +0000 (08:43 +0200)]
dma-direct: provide generic support for uncached kernel segments

A few architectures support uncached kernel segments.  In that case we get
an uncached mapping for a given physica address by using an offset in the
uncached segement.  Implement support for this scheme in the generic
dma-direct code instead of duplicating it in arch hooks.

Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agoau1100fb: fix DMA API abuse
Christoph Hellwig [Sun, 28 Apr 2019 18:47:05 +0000 (13:47 -0500)]
au1100fb: fix DMA API abuse

Virtual addresses return from dma(m)_alloc_coherent are opaque in what
backs then, and drivers must not poke into them.  Switch the driver
to use the generic DMA API mmap helper to avoid these games.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
5 years agoMIPS: remove the _dma_cache_wback_inv export
Christoph Hellwig [Sun, 28 Apr 2019 18:34:59 +0000 (13:34 -0500)]
MIPS: remove the _dma_cache_wback_inv export

This export is not used in modular code, which is a good thing as
everyone should use the proper DMA API instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Burton <paul.burton@mips.com>
5 years agoUSB: drop HCD_LOCAL_MEM flag
Laurentiu Tudor [Wed, 29 May 2019 10:28:43 +0000 (13:28 +0300)]
USB: drop HCD_LOCAL_MEM flag

With the addition of the local memory allocator, the HCD_LOCAL_MEM
flag can be dropped and the checks against it replaced with a check
for the localmem_pool ptr being initialized.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Tested-by: Fredrik Noring <noring@nocrew.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agousb: host: ohci-tmio: init genalloc for local memory
Laurentiu Tudor [Wed, 29 May 2019 10:28:42 +0000 (13:28 +0300)]
usb: host: ohci-tmio: init genalloc for local memory

In preparation for dropping the existing "coherent" dma mem declaration
APIs, replace the current dma_declare_coherent_memory() based mechanism
with the creation of a genalloc pool that will be used in the OHCI
subsystem as replacement for the DMA APIs.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agousb: host: ohci-sm501: init genalloc for local memory
Laurentiu Tudor [Wed, 29 May 2019 10:28:41 +0000 (13:28 +0300)]
usb: host: ohci-sm501: init genalloc for local memory

In preparation for dropping the existing "coherent" dma mem declaration
APIs, replace the current dma_declare_coherent_memory() based mechanism
with the creation of a genalloc pool that will be used in the OHCI
subsystem as replacement for the DMA APIs.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agoUSB: use genalloc for USB HCs with local memory
Laurentiu Tudor [Wed, 29 May 2019 10:28:40 +0000 (13:28 +0300)]
USB: use genalloc for USB HCs with local memory

For HCs that have local memory, replace the current DMA API usage with
a genalloc generic allocator to manage the mappings for these devices.
To help users, introduce a new HCD API, usb_hcd_setup_local_mem() that
will setup up the genalloc backing up the device local memory. It will
be used in subsequent patches.  This is in preparation for dropping
the existing "coherent" dma mem declaration APIs.  The current
implementation was relying on a short circuit in the DMA API that in
the end, was acting as an allocator for these type of devices.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Tested-by: Fredrik Noring <noring@nocrew.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agolib/genalloc: add gen_pool_dma_zalloc() for zeroed DMA allocations
Fredrik Noring [Wed, 29 May 2019 10:28:39 +0000 (13:28 +0300)]
lib/genalloc: add gen_pool_dma_zalloc() for zeroed DMA allocations

gen_pool_dma_zalloc() is a zeroed memory variant of
gen_pool_dma_alloc().  Also document the return values of both, and
indicate NULL as a "%NULL" constant.

Signed-off-by: Fredrik Noring <noring@nocrew.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agodma-contiguous: fix !CONFIG_DMA_CMA version of dma_{alloc, free}_contiguous()
Nicolin Chen [Thu, 30 May 2019 00:54:25 +0000 (17:54 -0700)]
dma-contiguous: fix !CONFIG_DMA_CMA version of dma_{alloc, free}_contiguous()

Commit fdaeec198ada ("dma-contiguous: add dma_{alloc,free}_contiguous()
helpers") adds a pair of new helper functions so as to abstract code in
the dma-direct (and other places in the future), however it breaks QEMU
boot feature using x86_64 defconfig.

That's because x86_64 defconfig has CONFIG_DMA_CMA=n so those two newly
introduced helper functions are empty in their !CONFIG_DMA_CMA version,
while previously the platform independent dma-direct code had fallback
alloc_pages_node() and __free_pages().

So this patch fixes it by adding alloc_pages_node() and __free_pages()
in the !CONFIG_DMA_CMA version of the two helper functions.

Tested with below QEMU command:
  qemu-system-x86_64 -m 512m \
      -drive file=images/x86_64/rootfs.ext4,format=raw,if=ide \
      -append 'console=ttyS0 root=/dev/sda' -nographic \
      -kernel arch/x86_64/boot/bzImage

with the rootfs from the below link:
  https://github.com/ClangBuiltLinux/continuous-integration/raw/master/images/x86_64/rootfs.ext4

Fixes: fdaeec198ada ("dma-contiguous: add dma_{alloc,free}_contiguous() helpers")
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agodma-contiguous: use fallback alloc_pages for single pages
Nicolin Chen [Fri, 24 May 2019 04:06:33 +0000 (21:06 -0700)]
dma-contiguous: use fallback alloc_pages for single pages

The addresses within a single page are always contiguous, so it's
not so necessary to always allocate one single page from CMA area.
Since the CMA area has a limited predefined size of space, it may
run out of space in heavy use cases, where there might be quite a
lot CMA pages being allocated for single pages.

However, there is also a concern that a device might care where a
page comes from -- it might expect the page from CMA area and act
differently if the page doesn't.

This patch tries to use the fallback alloc_pages path, instead of
one-page size allocations from the global CMA area in case that a
device does not have its own CMA area. This'd save resources from
the CMA global area for more CMA allocations, and also reduce CMA
fragmentations resulted from trivial allocations.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agodma-contiguous: add dma_{alloc,free}_contiguous() helpers
Nicolin Chen [Fri, 24 May 2019 04:06:32 +0000 (21:06 -0700)]
dma-contiguous: add dma_{alloc,free}_contiguous() helpers

Both dma_alloc_from_contiguous() and dma_release_from_contiguous() are
very simply implemented, but requiring callers to pass certain
parameters like count and align, and taking a boolean parameter to check
__GFP_NOWARN in the allocation flags. So every function call duplicates
similar work:

unsigned long order = get_order(size);
size_t count = size >> PAGE_SHIFT;

page = dma_alloc_from_contiguous(dev, count, order,
gfp & __GFP_NOWARN);

[...]

dma_release_from_contiguous(dev, page, size >> PAGE_SHIFT);

Additionally, as CMA can be used only in the context which permits
sleeping, most of callers do a gfpflags_allow_blocking() check and a
corresponding fallback allocation of normal pages upon any false result:

if (gfpflags_allow_blocking(flag))
page = dma_alloc_from_contiguous();
if (!page)
page = alloc_pages();

[...]

if (!dma_release_from_contiguous(dev, page, count))
__free_pages(page, get_order(size));

So this patch simplifies those function calls by abstracting these
operations into the two new functions: dma_{alloc,free}_contiguous.

As some callers of dma_{alloc,release}_from_contiguous() might be
complicated, this patch just implements these two new functions to
kernel/dma/direct.c only as an initial step.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agoiommu/dma: Fix condition check in iommu_dma_unmap_sg
Nathan Chancellor [Wed, 29 May 2019 08:15:32 +0000 (01:15 -0700)]
iommu/dma: Fix condition check in iommu_dma_unmap_sg

Clang warns:

drivers/iommu/dma-iommu.c:897:6: warning: logical not is only applied to
the left hand side of this comparison [-Wlogical-not-parentheses]
        if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) == 0)
            ^                                 ~~
drivers/iommu/dma-iommu.c:897:6: note: add parentheses after the '!' to
evaluate the comparison first
        if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) == 0)
            ^
             (                                    )
drivers/iommu/dma-iommu.c:897:6: note: add parentheses around left hand
side expression to silence this warning
        if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) == 0)
            ^
            (                                )
1 warning generated.

Judging from the rest of the commit and the conditional in
iommu_dma_map_sg, either

    if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))

or
    if ((attrs & DMA_ATTR_SKIP_CPU_SYNC) == 0)

was intended, not a combination of the two.

I personally think that the former is easier to understand so use that.

Fixes: 06d60728ff5c ("iommu/dma: move the arm64 wrappers to common code")
Link: https://github.com/ClangBuiltLinux/linux/issues/497
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoarm64: trim includes in dma-mapping.c
Christoph Hellwig [Mon, 20 May 2019 07:29:48 +0000 (09:29 +0200)]
arm64: trim includes in dma-mapping.c

With most of the previous functionality now elsewhere a lot of the
headers included in this file are not needed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoarm64: switch copyright boilerplace to SPDX in dma-mapping.c
Christoph Hellwig [Mon, 20 May 2019 07:29:47 +0000 (09:29 +0200)]
arm64: switch copyright boilerplace to SPDX in dma-mapping.c

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Switch copyright boilerplace to SPDX
Christoph Hellwig [Mon, 20 May 2019 07:29:46 +0000 (09:29 +0200)]
iommu/dma: Switch copyright boilerplace to SPDX

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Don't depend on CONFIG_DMA_DIRECT_REMAP
Christoph Hellwig [Mon, 20 May 2019 07:29:45 +0000 (09:29 +0200)]
iommu/dma: Don't depend on CONFIG_DMA_DIRECT_REMAP

For entirely dma coherent architectures there is no requirement to ever
remap dma coherent allocation.  Move all the remap and pool code under
IS_ENABLED() checks and drop the Kconfig dependency.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Refactor iommu_dma_mmap
Christoph Hellwig [Mon, 20 May 2019 07:29:44 +0000 (09:29 +0200)]
iommu/dma: Refactor iommu_dma_mmap

Inline __iommu_dma_mmap_pfn into the main function, and use the
fact that __iommu_dma_get_pages return NULL for remapped contigous
allocations to simplify the code flow a bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Refactor iommu_dma_get_sgtable
Christoph Hellwig [Mon, 20 May 2019 07:29:43 +0000 (09:29 +0200)]
iommu/dma: Refactor iommu_dma_get_sgtable

Inline __iommu_dma_get_sgtable_page into the main function, and use the
fact that __iommu_dma_get_pages return NULL for remapped contigous
allocations to simplify the code flow a bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Refactor iommu_dma_alloc, part 2
Christoph Hellwig [Mon, 20 May 2019 07:29:42 +0000 (09:29 +0200)]
iommu/dma: Refactor iommu_dma_alloc, part 2

All the logic in iommu_dma_alloc that deals with page allocation from
the CMA or page allocators can be split into a self-contained helper,
and we can than map the result of that or the atomic pool allocation
with the iommu later.  This also allows reusing __iommu_dma_free to
tear down the allocations and MMU mappings when the IOMMU mapping
fails.

Based on a patch from Robin Murphy.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Cleanup variable naming in iommu_dma_alloc
Robin Murphy [Mon, 20 May 2019 07:29:41 +0000 (09:29 +0200)]
iommu/dma: Cleanup variable naming in iommu_dma_alloc

Most importantly clear up the size / iosize confusion.  Also rename addr
to cpu_addr to match the surrounding code and make the intention a little
more clear.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[hch: split from a larger patch]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Split iommu_dma_free
Robin Murphy [Mon, 20 May 2019 07:29:40 +0000 (09:29 +0200)]
iommu/dma: Split iommu_dma_free

Most of it can double up to serve the failure cleanup path for
iommu_dma_alloc().

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Merge the CMA and alloc_pages allocation paths
Christoph Hellwig [Mon, 20 May 2019 07:29:39 +0000 (09:29 +0200)]
iommu/dma: Merge the CMA and alloc_pages allocation paths

Instead of having a separate code path for the non-blocking alloc_pages
and CMA allocations paths merge them into one.  There is a slight
behavior change here in that we try the page allocator if CMA fails.
This matches what dma-direct and other iommu drivers do and will be
needed to use the dma-iommu code on architectures without DMA remapping
later on.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Don't remap CMA unnecessarily
Robin Murphy [Mon, 20 May 2019 07:29:38 +0000 (09:29 +0200)]
iommu/dma: Don't remap CMA unnecessarily

Always remapping CMA allocations was largely a bodge to keep the freeing
logic manageable when it was split between here and an arch wrapper. Now
that it's all together and streamlined, we can relax that limitation.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Refactor iommu_dma_alloc
Robin Murphy [Mon, 20 May 2019 07:29:37 +0000 (09:29 +0200)]
iommu/dma: Refactor iommu_dma_alloc

Shuffle around the self-contained atomic and non-contiguous cases to
return early and get out of the way of the CMA case that we're about to
work on next.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[hch: slight changes to the code flow]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Refactor iommu_dma_free
Robin Murphy [Mon, 20 May 2019 07:29:36 +0000 (09:29 +0200)]
iommu/dma: Refactor iommu_dma_free

The freeing logic was made particularly horrible by part of it being
opaque to the arch wrapper, which led to a lot of convoluted repetition
to ensure each path did everything in the right order. Now that it's
all private, we can pick apart and consolidate the logically-distinct
steps of freeing the IOMMU mapping, the underlying pages, and the CPU
remap (if necessary) into something much more manageable.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[various cosmetic changes to the code flow]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Remove __iommu_dma_free
Christoph Hellwig [Mon, 20 May 2019 07:29:35 +0000 (09:29 +0200)]
iommu/dma: Remove __iommu_dma_free

We only have a single caller of this function left, so open code it there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Refactor the page array remapping allocator
Christoph Hellwig [Mon, 20 May 2019 07:29:34 +0000 (09:29 +0200)]
iommu/dma: Refactor the page array remapping allocator

Move the call to dma_common_pages_remap into __iommu_dma_alloc and
rename it to iommu_dma_alloc_remap.  This creates a self-contained
helper for remapped pages allocation and mapping.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Factor out remapped pages lookup
Robin Murphy [Mon, 20 May 2019 07:29:33 +0000 (09:29 +0200)]
iommu/dma: Factor out remapped pages lookup

Since we duplicate the find_vm_area() logic a few times in places where
we only care aboute the pages, factor out a helper to abstract it.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[hch: don't warn when not finding a region, as we'll rely on that later]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Squash __iommu_dma_{map,unmap}_page helpers
Robin Murphy [Mon, 20 May 2019 07:29:32 +0000 (09:29 +0200)]
iommu/dma: Squash __iommu_dma_{map,unmap}_page helpers

The remaining internal callsites don't care about having prototypes
compatible with the relevant dma_map_ops callbacks, so the extra
level of indirection just wastes space and complictaes things.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Move domain lookup into __iommu_dma_{map,unmap}
Robin Murphy [Mon, 20 May 2019 07:29:31 +0000 (09:29 +0200)]
iommu/dma: Move domain lookup into __iommu_dma_{map,unmap}

Most of the callers don't care, and the couple that do already have the
domain to hand for other reasons are in slow paths where the (trivial)
overhead of a repeated lookup will be utterly immaterial.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[hch: dropped the hunk touching iommu_dma_get_msi_page to avoid a
 conflict with another series]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Move __iommu_dma_map
Christoph Hellwig [Mon, 20 May 2019 07:29:30 +0000 (09:29 +0200)]
iommu/dma: Move __iommu_dma_map

Moving this function up to its unmap counterpart helps to keep related
code together for the following changes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: move the arm64 wrappers to common code
Christoph Hellwig [Mon, 20 May 2019 07:29:29 +0000 (09:29 +0200)]
iommu/dma: move the arm64 wrappers to common code

There is nothing really arm64 specific in the iommu_dma_ops
implementation, so move it to dma-iommu.c and keep a lot of symbols
self-contained.  Note the implementation does depend on the
DMA_DIRECT_REMAP infrastructure for now, so we'll have to make the
DMA_IOMMU support depend on it, but this will be relaxed soon.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Use for_each_sg in iommu_dma_alloc
Christoph Hellwig [Mon, 20 May 2019 07:29:28 +0000 (09:29 +0200)]
iommu/dma: Use for_each_sg in iommu_dma_alloc

arch_dma_prep_coherent can handle physically contiguous ranges larger
than PAGE_SIZE just fine, which means we don't need a page-based
iterator.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Remove the flush_page callback
Christoph Hellwig [Mon, 20 May 2019 07:29:27 +0000 (09:29 +0200)]
iommu/dma: Remove the flush_page callback

We now have a arch_dma_prep_coherent architecture hook that is used
for the generic DMA remap allocator, and we should use the same
interface for the dma-iommu code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoiommu/dma: Cleanup dma-iommu.h
Christoph Hellwig [Mon, 20 May 2019 07:29:26 +0000 (09:29 +0200)]
iommu/dma: Cleanup dma-iommu.h

No need for a __KERNEL__ guard outside uapi and add a missing comment
describing the #else cpp statement.  Last but not least include
<linux/errno.h> instead of the asm version, which is frowned upon.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoLinux 5.2-rc2
Linus Torvalds [Sun, 26 May 2019 23:49:19 +0000 (16:49 -0700)]
Linux 5.2-rc2

5 years agoMerge tag 'trace-v5.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Sun, 26 May 2019 20:49:40 +0000 (13:49 -0700)]
Merge tag 'trace-v5.2-rc1-2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing warning fix from Steven Rostedt:
 "Make the GCC 9 warning for sub struct memset go away.

  GCC 9 now warns about calling memset() on partial structures when it
  goes across multiple fields. This adds a helper for the place in
  tracing that does this type of clearing of a structure"

* tag 'trace-v5.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Silence GCC 9 array bounds warning

5 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 26 May 2019 20:45:15 +0000 (13:45 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "The usual smattering of fixes and tunings that came in too late for
  the merge window, but should not wait four months before they appear
  in a release.

  I also travelled a bit more than usual in the first part of May, which
  didn't help with picking up patches and reports promptly"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (33 commits)
  KVM: x86: fix return value for reserved EFER
  tools/kvm_stat: fix fields filter for child events
  KVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard
  kvm: selftests: aarch64: compile with warnings on
  kvm: selftests: aarch64: fix default vm mode
  kvm: selftests: aarch64: dirty_log_test: fix unaligned memslot size
  KVM: s390: fix memory slot handling for KVM_SET_USER_MEMORY_REGION
  KVM: x86/pmu: do not mask the value that is written to fixed PMUs
  KVM: x86/pmu: mask the result of rdpmc according to the width of the counters
  x86/kvm/pmu: Set AMD's virt PMU version to 1
  KVM: x86: do not spam dmesg with VMCS/VMCB dumps
  kvm: Check irqchip mode before assign irqfd
  kvm: svm/avic: fix off-by-one in checking host APIC ID
  KVM: selftests: do not blindly clobber registers in guest asm
  KVM: selftests: Remove duplicated TEST_ASSERT in hyperv_cpuid.c
  KVM: LAPIC: Expose per-vCPU timer_advance_ns to userspace
  KVM: LAPIC: Fix lapic_timer_advance_ns parameter overflow
  kvm: vmx: Fix -Wmissing-prototypes warnings
  KVM: nVMX: Fix using __this_cpu_read() in preemptible context
  kvm: fix compilation on s390
  ...

5 years agoMerge tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 May 2019 15:30:16 +0000 (08:30 -0700)]
Merge tag 'random_for_linus_stable' of git://git./linux/kernel/git/tytso/random

Pull /dev/random fix from Ted Ts'o:
 "Fix a soft lockup regression when reading from /dev/random in early
  boot"

* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: fix soft lockup when trying to read from an uninitialized blocking pool

5 years agorandom: fix soft lockup when trying to read from an uninitialized blocking pool
Theodore Ts'o [Wed, 22 May 2019 16:02:16 +0000 (12:02 -0400)]
random: fix soft lockup when trying to read from an uninitialized blocking pool

Fixes: eb9d1bf079bb: "random: only read from /dev/random after its pool has received 128 bits"
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
5 years agotracing: Silence GCC 9 array bounds warning
Miguel Ojeda [Thu, 23 May 2019 12:45:35 +0000 (14:45 +0200)]
tracing: Silence GCC 9 array bounds warning

Starting with GCC 9, -Warray-bounds detects cases when memset is called
starting on a member of a struct but the size to be cleared ends up
writing over further members.

Such a call happens in the trace code to clear, at once, all members
after and including `seq` on struct trace_iterator:

    In function 'memset',
        inlined from 'ftrace_dump' at kernel/trace/trace.c:8914:3:
    ./include/linux/string.h:344:9: warning: '__builtin_memset' offset
    [8505, 8560] from the object at 'iter' is out of the bounds of
    referenced subobject 'seq' with type 'struct trace_seq' at offset
    4368 [-Warray-bounds]
      344 |  return __builtin_memset(p, c, size);
          |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

In order to avoid GCC complaining about it, we compute the address
ourselves by adding the offsetof distance instead of referring
directly to the member.

Since there are two places doing this clear (trace.c and trace_kdb.c),
take the chance to move the workaround into a single place in
the internal header.

Link: http://lkml.kernel.org/r/20190523124535.GA12931@gmail.com
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
[ Removed unnecessary parenthesis around "iter" ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
5 years agoMerge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 25 May 2019 22:03:12 +0000 (15:03 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Bug fixes (including a regression fix) for ext4"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix dcache lookup of !casefolded directories
  ext4: do not delete unlinked inode from orphan list on failed truncate
  ext4: wait for outstanding dio during truncate in nojournal mode
  ext4: don't perform block validity checks on the journal inode

5 years agoMerge tag 'libnvdimm-fixes-5.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 25 May 2019 17:11:23 +0000 (10:11 -0700)]
Merge tag 'libnvdimm-fixes-5.2-rc2' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:

 - Fix a regression that disabled device-mapper dax support

 - Remove unnecessary hardened-user-copy overhead (>30%) for dax
   read(2)/write(2).

 - Fix some compilation warnings.

* tag 'libnvdimm-fixes-5.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm/pmem: Bypass CONFIG_HARDENED_USERCOPY overhead
  dax: Arrange for dax_supported check to span multiple devices
  libnvdimm: Fix compilation warnings with W=1

5 years agoMerge tag 'trace-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Sat, 25 May 2019 17:08:14 +0000 (10:08 -0700)]
Merge tag 'trace-v5.2-rc1' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Tom Zanussi sent me some small fixes and cleanups to the histogram
  code and I forgot to incorporate them.

  I also added a small clean up patch that was sent to me a while ago
  and I just noticed it"

* tag 'trace-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  kernel/trace/trace.h: Remove duplicate header of trace_seq.h
  tracing: Add a check_val() check before updating cond_snapshot() track_val
  tracing: Check keys for variable references in expressions too
  tracing: Prevent hist_field_var_ref() from accessing NULL tracing_map_elts

5 years agoext4: fix dcache lookup of !casefolded directories
Gabriel Krisman Bertazi [Sat, 25 May 2019 03:48:23 +0000 (23:48 -0400)]
ext4: fix dcache lookup of !casefolded directories

Found by visual inspection, this wasn't caught by my xfstest, since it's
effect is ignoring positive dentries in the cache the fallback just goes
to the disk.  it was introduced in the last iteration of the
case-insensitive patch.

d_compare should return 0 when the entries match, so make sure we are
correctly comparing the entire string if the encoding feature is set and
we are on a case-INsensitive directory.

Fixes: b886ee3e778e ("ext4: Support case-insensitive file name lookups")
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
5 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 25 May 2019 00:30:28 +0000 (17:30 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is the same set of patches sent in the merge window as the final
  pull except that Martin's read only rework is replaced with a simple
  revert of the original change that caused the regression.

  Everything else is an obvious fix or small cleanup"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  Revert "scsi: sd: Keep disk read-only when re-reading partition"
  scsi: bnx2fc: fix incorrect cast to u64 on shift operation
  scsi: smartpqi: Reporting unhandled SCSI errors
  scsi: myrs: Fix uninitialized variable
  scsi: lpfc: Update lpfc version to 12.2.0.2
  scsi: lpfc: add check for loss of ndlp when sending RRQ
  scsi: lpfc: correct rcu unlock issue in lpfc_nvme_info_show
  scsi: lpfc: resolve lockdep warnings
  scsi: qedi: remove set but not used variables 'cdev' and 'udev'
  scsi: qedi: remove memset/memcpy to nfunc and use func instead
  scsi: qla2xxx: Add cleanup for PCI EEH recovery

5 years agoMerge tag 'for-linus-20190524' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 24 May 2019 23:02:14 +0000 (16:02 -0700)]
Merge tag 'for-linus-20190524' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request from Keith, with fixes from a few folks.

 - bio and sbitmap before atomic barrier fixes (Andrea)

 - Hang fix for blk-mq freeze and unfreeze (Bob)

 - Single segment count regression fix (Christoph)

 - AoE now has a new maintainer

 - tools/io_uring/ Makefile fix, and sync with liburing (me)

* tag 'for-linus-20190524' of git://git.kernel.dk/linux-block: (23 commits)
  tools/io_uring: sync with liburing
  tools/io_uring: fix Makefile for pthread library link
  blk-mq: fix hang caused by freeze/unfreeze sequence
  block: remove the bi_seg_{front,back}_size fields in struct bio
  block: remove the segment size check in bio_will_gap
  block: force an unlimited segment size on queues with a virt boundary
  block: don't decrement nr_phys_segments for physically contigous segments
  sbitmap: fix improper use of smp_mb__before_atomic()
  bio: fix improper use of smp_mb__before_atomic()
  aoe: list new maintainer for aoe driver
  nvme-pci: use blk-mq mapping for unmanaged irqs
  nvme: update MAINTAINERS
  nvme: copy MTFA field from identify controller
  nvme: fix memory leak for power latency tolerance
  nvme: release namespace SRCU protection before performing controller ioctls
  nvme: merge nvme_ns_ioctl into nvme_ioctl
  nvme: remove the ifdef around nvme_nvm_ioctl
  nvme: fix srcu locking on error return in nvme_get_ns_from_disk
  nvme: Fix known effects
  nvme-pci: Sync queues on reset
  ...

5 years agoMerge tag 'linux-kselftest-5.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 24 May 2019 22:21:05 +0000 (15:21 -0700)]
Merge tag 'linux-kselftest-5.2-rc2' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fixes from Shuah Khan:

 - Two fixes to regressions introduced in kselftest Makefile test run
   output refactoring work (Kees Cook)

 - Adding Atom support to syscall_arg_fault test (Tong Bo)

* tag 'linux-kselftest-5.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/timers: Add missing fflush(stdout) calls
  selftests: Remove forced unbuffering for test running
  selftests/x86: Support Atom for syscall_arg_fault test

5 years agoMerge tag 'devicetree-fixes-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 24 May 2019 22:16:46 +0000 (15:16 -0700)]
Merge tag 'devicetree-fixes-for-5.2' of git://git./linux/kernel/git/robh/linux

Pull Devicetree fixes from Rob Herring:

 - Update checkpatch.pl to use DT vendor-prefixes.yaml

 - Fix DT binding references to files converted to DT schema

 - Clean-up Arm CPU binding examples to match schema

 - Add Sifive block versioning scheme documentation

 - Pass binding directory base to validation tools for reference lookups

* tag 'devicetree-fixes-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  checkpatch.pl: Update DT vendor prefix check
  dt: bindings: mtd: replace references to nand.txt with nand-controller.yaml
  dt-bindings: interrupt-controller: arm,gic: Fix schema errors in example
  dt-bindings: arm: Clean up CPU binding examples
  dt: fix refs that were renamed to json with the same file name
  dt-bindings: Pass binding directory to validation tools
  dt-bindings: sifive: describe sifive-blocks versioning

5 years agoMerge tag 'spdx-5.2-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 24 May 2019 21:31:58 +0000 (14:31 -0700)]
Merge tag 'spdx-5.2-rc2-2' of git://git./linux/kernel/git/gregkh/driver-core

Pule more SPDX updates from Greg KH:
 "Here is another set of reviewed patches that adds SPDX tags to
  different kernel files, based on a set of rules that are being used to
  parse the comments to try to determine that the license of the file is
  "GPL-2.0-or-later".

  Only the "obvious" versions of these matches are included here, a
  number of "non-obvious" variants of text have been found but those
  have been postponed for later review and analysis.

  These patches have been out for review on the linux-spdx@vger mailing
  list, and while they were created by automatic tools, they were
  hand-verified by a bunch of different people, all whom names are on
  the patches are reviewers"

* tag 'spdx-5.2-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (85 commits)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 125
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 123
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 122
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 121
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 119
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 116
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 113
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 112
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 111
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 110
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 106
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 105
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 103
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 101
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 98
  ...

5 years agolocking/lock_events: Use this_cpu_add() when necessary
Waiman Long [Fri, 24 May 2019 19:42:22 +0000 (15:42 -0400)]
locking/lock_events: Use this_cpu_add() when necessary

The kernel test robot has reported that the use of __this_cpu_add()
causes bug messages like:

  BUG: using __this_cpu_add() in preemptible [00000000] code: ...

Given the imprecise nature of the count and the possibility of resetting
the count and doing the measurement again, this is not really a big
problem to use the unprotected __this_cpu_*() functions.

To make the preemption checking code happy, the this_cpu_*() functions
will be used if CONFIG_DEBUG_PREEMPT is defined.

The imprecise nature of the locking counts are also documented with
the suggestion that we should run the measurement a few times with the
counts reset in between to get a better picture of what is going on
under the hood.

Fixes: a8654596f0371 ("locking/rwsem: Enable lock event counting")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoKVM: x86: fix return value for reserved EFER
Paolo Bonzini [Fri, 24 May 2019 19:52:46 +0000 (21:52 +0200)]
KVM: x86: fix return value for reserved EFER

Commit 11988499e62b ("KVM: x86: Skip EFER vs. guest CPUID checks for
host-initiated writes", 2019-04-02) introduced a "return false" in a
function returning int, and anyway set_efer has a "nonzero on error"
conventon so it should be returning 1.

Reported-by: Pavel Machek <pavel@denx.de>
Fixes: 11988499e62b ("KVM: x86: Skip EFER vs. guest CPUID checks for host-initiated writes")
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotools/kvm_stat: fix fields filter for child events
Stefan Raspl [Sun, 21 Apr 2019 13:26:24 +0000 (15:26 +0200)]
tools/kvm_stat: fix fields filter for child events

The fields filter would not work with child fields, as the respective
parents would not be included. No parents displayed == no childs displayed.
To reproduce, run on s390 (would work on other platforms, too, but would
require a different filter name):
- Run 'kvm_stat -d'
- Press 'f'
- Enter 'instruct'
Notice that events like instruction_diag_44 or instruction_diag_500 are not
displayed - the output remains empty.
With this patch, we will filter by matching events and their parents.
However, consider the following example where we filter by
instruction_diag_44:

  kvm statistics - summary
                   regex filter: instruction_diag_44
   Event                                         Total %Total CurAvg/s
   exit_instruction                                276  100.0       12
     instruction_diag_44                           256   92.8       11
   Total                                           276              12

Note that the parent ('exit_instruction') displays the total events, but
the childs listed do not match its total (256 instead of 276). This is
intended (since we're filtering all but one child), but might be confusing
on first sight.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard
Thomas Huth [Thu, 23 May 2019 09:31:14 +0000 (11:31 +0200)]
KVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard

struct kvm_nested_state is only available on x86 so far. To be able
to compile the code on other architectures as well, we need to wrap
the related code with #ifdefs.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: selftests: aarch64: compile with warnings on
Andrew Jones [Thu, 23 May 2019 10:16:34 +0000 (12:16 +0200)]
kvm: selftests: aarch64: compile with warnings on

aarch64 fixups needed to compile with warnings as errors.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: selftests: aarch64: fix default vm mode
Andrew Jones [Thu, 23 May 2019 11:05:46 +0000 (13:05 +0200)]
kvm: selftests: aarch64: fix default vm mode

VM_MODE_P52V48_4K is not a valid mode for AArch64. Replace its
use in vm_create_default() with a mode that works and represents
a good AArch64 default. (We didn't ever see a problem with this
because we don't have any unit tests using vm_create_default(),
but it's good to get it fixed in advance.)

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: selftests: aarch64: dirty_log_test: fix unaligned memslot size
Andrew Jones [Thu, 23 May 2019 09:34:05 +0000 (11:34 +0200)]
kvm: selftests: aarch64: dirty_log_test: fix unaligned memslot size

The memory slot size must be aligned to the host's page size. When
testing a guest with a 4k page size on a host with a 64k page size,
then 3 guest pages are not host page size aligned. Since we just need
a nearly arbitrary number of extra pages to ensure the memslot is not
aligned to a 64 host-page boundary for this test, then we can use
16, as that's 64k aligned, but not 64 * 64k aligned.

Fixes: 76d58e0f07ec ("KVM: fix KVM_CLEAR_DIRTY_LOG for memory slots of unaligned size", 2019-04-17)
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: s390: fix memory slot handling for KVM_SET_USER_MEMORY_REGION
Christian Borntraeger [Fri, 24 May 2019 14:06:23 +0000 (16:06 +0200)]
KVM: s390: fix memory slot handling for KVM_SET_USER_MEMORY_REGION

kselftests exposed a problem in the s390 handling for memory slots.
Right now we only do proper memory slot handling for creation of new
memory slots. Neither MOVE, nor DELETION are handled properly. Let us
implement those.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: x86/pmu: do not mask the value that is written to fixed PMUs
Paolo Bonzini [Mon, 20 May 2019 15:34:30 +0000 (17:34 +0200)]
KVM: x86/pmu: do not mask the value that is written to fixed PMUs

According to the SDM, for MSR_IA32_PERFCTR0/1 "the lower-order 32 bits of
each MSR may be written with any value, and the high-order 8 bits are
sign-extended according to the value of bit 31", but the fixed counters
in real hardware are limited to the width of the fixed counters ("bits
beyond the width of the fixed-function counter are reserved and must be
written as zeros").  Fix KVM to do the same.

Reported-by: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: x86/pmu: mask the result of rdpmc according to the width of the counters
Paolo Bonzini [Mon, 20 May 2019 15:20:40 +0000 (17:20 +0200)]
KVM: x86/pmu: mask the result of rdpmc according to the width of the counters

This patch will simplify the changes in the next, by enforcing the
masking of the counters to RDPMC and RDMSR.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agox86/kvm/pmu: Set AMD's virt PMU version to 1
Borislav Petkov [Wed, 8 May 2019 17:02:48 +0000 (19:02 +0200)]
x86/kvm/pmu: Set AMD's virt PMU version to 1

After commit:

  672ff6cff80c ("KVM: x86: Raise #GP when guest vCPU do not support PMU")

my AMD guests started #GPing like this:

  general protection fault: 0000 [#1] PREEMPT SMP
  CPU: 1 PID: 4355 Comm: bash Not tainted 5.1.0-rc6+ #3
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
  RIP: 0010:x86_perf_event_update+0x3b/0xa0

with Code: pointing to RDPMC. It is RDPMC because the guest has the
hardware watchdog CONFIG_HARDLOCKUP_DETECTOR_PERF enabled which uses
perf. Instrumenting kvm_pmu_rdpmc() some, showed that it fails due to:

  if (!pmu->version)
   return 1;

which the above commit added. Since AMD's PMU leaves the version at 0,
that causes the #GP injection into the guest.

Set pmu->version arbitrarily to 1 and move it above the non-applicable
struct kvm_pmu members.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: kvm@vger.kernel.org
Cc: Liran Alon <liran.alon@oracle.com>
Cc: Mihai Carabas <mihai.carabas@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86@kernel.org
Cc: stable@vger.kernel.org
Fixes: 672ff6cff80c ("KVM: x86: Raise #GP when guest vCPU do not support PMU")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: x86: do not spam dmesg with VMCS/VMCB dumps
Paolo Bonzini [Mon, 20 May 2019 13:34:35 +0000 (15:34 +0200)]
KVM: x86: do not spam dmesg with VMCS/VMCB dumps

Userspace can easily set up invalid processor state in such a way that
dmesg will be filled with VMCS or VMCB dumps.  Disable this by default
using a module parameter.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: Check irqchip mode before assign irqfd
Peter Xu [Sun, 5 May 2019 08:56:42 +0000 (16:56 +0800)]
kvm: Check irqchip mode before assign irqfd

When assigning kvm irqfd we didn't check the irqchip mode but we allow
KVM_IRQFD to succeed with all the irqchip modes.  However it does not
make much sense to create irqfd even without the kernel chips.  Let's
provide a arch-dependent helper to check whether a specific irqfd is
allowed by the arch.  At least for x86, it should make sense to check:

- when irqchip mode is NONE, all irqfds should be disallowed, and,

- when irqchip mode is SPLIT, irqfds that are with resamplefd should
  be disallowed.

For either of the case, previously we'll silently ignore the irq or
the irq ack event if the irqchip mode is incorrect.  However that can
cause misterious guest behaviors and it can be hard to triage.  Let's
fail KVM_IRQFD even earlier to detect these incorrect configurations.

CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Radim Krčmář <rkrcmar@redhat.com>
CC: Alex Williamson <alex.williamson@redhat.com>
CC: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: svm/avic: fix off-by-one in checking host APIC ID
Suthikulpanit, Suravee [Tue, 14 May 2019 15:49:52 +0000 (15:49 +0000)]
kvm: svm/avic: fix off-by-one in checking host APIC ID

Current logic does not allow VCPU to be loaded onto CPU with
APIC ID 255. This should be allowed since the host physical APIC ID
field in the AVIC Physical APIC table entry is an 8-bit value,
and APIC ID 255 is valid in system with x2APIC enabled.
Instead, do not allow VCPU load if the host APIC ID cannot be
represented by an 8-bit value.

Also, use the more appropriate AVIC_PHYSICAL_ID_ENTRY_HOST_PHYSICAL_ID_MASK
instead of AVIC_MAX_PHYSICAL_ID_COUNT.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: selftests: do not blindly clobber registers in guest asm
Paolo Bonzini [Mon, 20 May 2019 11:31:02 +0000 (13:31 +0200)]
KVM: selftests: do not blindly clobber registers in guest asm

The guest_code of sync_regs_test is assuming that the compiler will not
touch %r11 outside the asm that increments it, which is a bit brittle.
Instead, we can increment a variable and use a dummy asm to ensure the
increment is not optimized away.  However, we also need to use a
callee-save register or the compiler will insert a save/restore around
the vmexit, breaking the whole idea behind the test.

(Yes, "if it ain't broken...", but I would like the test to be clean
before it is copied into the upcoming s390 selftests).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: selftests: Remove duplicated TEST_ASSERT in hyperv_cpuid.c
Thomas Huth [Mon, 20 May 2019 10:55:11 +0000 (12:55 +0200)]
KVM: selftests: Remove duplicated TEST_ASSERT in hyperv_cpuid.c

The check for entry->index == 0 is done twice. One time should
be sufficient.

Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: LAPIC: Expose per-vCPU timer_advance_ns to userspace
Wanpeng Li [Mon, 20 May 2019 08:18:07 +0000 (16:18 +0800)]
KVM: LAPIC: Expose per-vCPU timer_advance_ns to userspace

Expose per-vCPU timer_advance_ns to userspace, so it is able to
query the auto-adjusted value.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: LAPIC: Fix lapic_timer_advance_ns parameter overflow
Wanpeng Li [Mon, 20 May 2019 08:18:06 +0000 (16:18 +0800)]
KVM: LAPIC: Fix lapic_timer_advance_ns parameter overflow

After commit c3941d9e0 (KVM: lapic: Allow user to disable adaptive tuning of
timer advancement), '-1' enables adaptive tuning starting from default
advancment of 1000ns. However, we should expose an int instead of an overflow
uint module parameter.

Before patch:

/sys/module/kvm/parameters/lapic_timer_advance_ns:4294967295

After patch:

/sys/module/kvm/parameters/lapic_timer_advance_ns:-1

Fixes: c3941d9e0 (KVM: lapic: Allow user to disable adaptive tuning of timer advancement)
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: vmx: Fix -Wmissing-prototypes warnings
Yi Wang [Mon, 20 May 2019 04:27:47 +0000 (12:27 +0800)]
kvm: vmx: Fix -Wmissing-prototypes warnings

We get a warning when build kernel W=1:
arch/x86/kvm/vmx/vmx.c:6365:6: warning: no previous prototype for ‘vmx_update_host_rsp’ [-Wmissing-prototypes]
 void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp)

Add the missing declaration to fix this.

Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: nVMX: Fix using __this_cpu_read() in preemptible context
Wanpeng Li [Fri, 17 May 2019 08:49:50 +0000 (16:49 +0800)]
KVM: nVMX: Fix using __this_cpu_read() in preemptible context

 BUG: using __this_cpu_read() in preemptible [00000000] code: qemu-system-x86/4590
  caller is nested_vmx_enter_non_root_mode+0xebd/0x1790 [kvm_intel]
  CPU: 4 PID: 4590 Comm: qemu-system-x86 Tainted: G           OE     5.1.0-rc4+ #1
  Call Trace:
   dump_stack+0x67/0x95
   __this_cpu_preempt_check+0xd2/0xe0
   nested_vmx_enter_non_root_mode+0xebd/0x1790 [kvm_intel]
   nested_vmx_run+0xda/0x2b0 [kvm_intel]
   handle_vmlaunch+0x13/0x20 [kvm_intel]
   vmx_handle_exit+0xbd/0x660 [kvm_intel]
   kvm_arch_vcpu_ioctl_run+0xa2c/0x1e50 [kvm]
   kvm_vcpu_ioctl+0x3ad/0x6d0 [kvm]
   do_vfs_ioctl+0xa5/0x6e0
   ksys_ioctl+0x6d/0x80
   __x64_sys_ioctl+0x1a/0x20
   do_syscall_64+0x6f/0x6c0
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Accessing per-cpu variable should disable preemption, this patch extends the
preemption disable region for __this_cpu_read().

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Fixes: 52017608da33 ("KVM: nVMX: add option to perform early consistency checks via H/W")
Cc: stable@vger.kernel.org
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: fix compilation on s390
Paolo Bonzini [Mon, 20 May 2019 10:06:36 +0000 (12:06 +0200)]
kvm: fix compilation on s390

s390 does not have memremap, even though in this particular case it
would be useful.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: x86: Include CPUID leaf 0x8000001e in kvm's supported CPUID
Jim Mattson [Wed, 27 Mar 2019 20:15:37 +0000 (13:15 -0700)]
kvm: x86: Include CPUID leaf 0x8000001e in kvm's supported CPUID

Kvm now supports extended CPUID functions through 0x8000001f.  CPUID
leaf 0x8000001e is AMD's Processor Topology Information leaf. This
contains similar information to CPUID leaf 0xb (Intel's Extended
Topology Enumeration leaf), and should be included in the output of
KVM_GET_SUPPORTED_CPUID, even though userspace is likely to override
some of this information based upon the configuration of the
particular VM.

Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Borislav Petkov <bp@suse.de>
Fixes: 8765d75329a38 ("KVM: X86: Extend CPUID range to include new leaf")
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Marc Orr <marcorr@google.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: x86: Include multiple indices with CPUID leaf 0x8000001d
Jim Mattson [Wed, 27 Mar 2019 20:15:36 +0000 (13:15 -0700)]
kvm: x86: Include multiple indices with CPUID leaf 0x8000001d

Per the APM, "CPUID Fn8000_001D_E[D,C,B,A]X reports cache topology
information for the cache enumerated by the value passed to the
instruction in ECX, referred to as Cache n in the following
description. To gather information for all cache levels, software must
repeatedly execute CPUID with 8000_001Dh in EAX and ECX set to
increasing values beginning with 0 until a value of 00h is returned in
the field CacheType (EAX[4:0]) indicating no more cache descriptions
are available for this processor."

The termination condition is the same as leaf 4, so we can reuse that
code block for leaf 0x8000001d.

Fixes: 8765d75329a38 ("KVM: X86: Extend CPUID range to include new leaf")
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Borislav Petkov <bp@suse.de>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Marc Orr <marcorr@google.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: selftests: Compile code with warnings enabled
Thomas Huth [Fri, 17 May 2019 09:04:45 +0000 (11:04 +0200)]
KVM: selftests: Compile code with warnings enabled

So far the KVM selftests are compiled without any compiler warnings
enabled. That's quite bad, since we miss a lot of possible bugs this
way. Let's enable at least "-Wall" and some other useful warning flags
now, and fix at least the trivial problems in the code (like unused
variables).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: selftests: avoid type punning
Paolo Bonzini [Mon, 20 May 2019 10:02:16 +0000 (12:02 +0200)]
kvm: selftests: avoid type punning

Avoid warnings from -Wstrict-aliasing by using memcpy.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: selftests: Fix a condition in test_hv_cpuid()
Dan Carpenter [Tue, 14 May 2019 10:34:51 +0000 (13:34 +0300)]
KVM: selftests: Fix a condition in test_hv_cpuid()

The code is trying to check that all the padding is zeroed out and it
does this:

    entry->padding[0] == entry->padding[1] == entry->padding[2] == 0

Assume everything is zeroed correctly, then the first comparison is
true, the next comparison is false and false is equal to zero so the
overall condition is true.  This bug doesn't affect run time very
badly, but the code should instead just check that all three paddings
are zero individually.

Also the error message was copy and pasted from an earlier error and it
wasn't correct.

Fixes: 7edcb7343327 ("KVM: selftests: Add hyperv_cpuid test")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: Fix spinlock taken warning during host resume
Wanpeng Li [Fri, 17 May 2019 08:49:49 +0000 (16:49 +0800)]
KVM: Fix spinlock taken warning during host resume

 WARNING: CPU: 0 PID: 13554 at kvm/arch/x86/kvm//../../../virt/kvm/kvm_main.c:4183 kvm_resume+0x3c/0x40 [kvm]
  CPU: 0 PID: 13554 Comm: step_after_susp Tainted: G           OE     5.1.0-rc4+ #1
  RIP: 0010:kvm_resume+0x3c/0x40 [kvm]
  Call Trace:
   syscore_resume+0x63/0x2d0
   suspend_devices_and_enter+0x9d1/0xa40
   pm_suspend+0x33a/0x3b0
   state_store+0x82/0xf0
   kobj_attr_store+0x12/0x20
   sysfs_kf_write+0x4b/0x60
   kernfs_fop_write+0x120/0x1a0
   __vfs_write+0x1b/0x40
   vfs_write+0xcd/0x1d0
   ksys_write+0x5f/0xe0
   __x64_sys_write+0x1a/0x20
   do_syscall_64+0x6f/0x6c0
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Commit ca84d1a24 (KVM: x86: Add clock sync request to hardware enable) mentioned
that "we always hold kvm_lock when hardware_enable is called.  The one place that
doesn't need to worry about it is resume, as resuming a frozen CPU, the spinlock
won't be taken." However, commit 6706dae9 (virt/kvm: Replace spin_is_locked() with
lockdep) introduces a bug, it asserts when the lock is not held which is contrary
to the original goal.

This patch fixes it by WARN_ON when the lock is held.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Fixes: 6706dae9 ("virt/kvm: Replace spin_is_locked() with lockdep")
[Wrap with #ifdef CONFIG_LOCKDEP - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: nVMX: Clear nested_run_pending if setting nested state fails
Sean Christopherson [Wed, 8 May 2019 18:04:32 +0000 (11:04 -0700)]
KVM: nVMX: Clear nested_run_pending if setting nested state fails

VMX's nested_run_pending flag is subtly consumed when stuffing state to
enter guest mode, i.e. needs to be set according before KVM knows if
setting guest state is successful.  If setting guest state fails, clear
the flag as a nested run is obviously not pending.

Reported-by: Aaron Lewis <aaronlewis@google.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: nVMX: really fix the size checks on KVM_SET_NESTED_STATE
Paolo Bonzini [Mon, 20 May 2019 09:55:36 +0000 (11:55 +0200)]
KVM: nVMX: really fix the size checks on KVM_SET_NESTED_STATE

The offset for reading the shadow VMCS is sizeof(*kvm_state)+VMCS12_SIZE,
so the correct size must be that plus sizeof(*vmcs12).  This could lead
to KVM reading garbage data from userspace and not reporting an error,
but is otherwise not sensitive.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoMerge tag 'kvmarm-fixes-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Paolo Bonzini [Fri, 24 May 2019 19:27:00 +0000 (21:27 +0200)]
Merge tag 'kvmarm-fixes-for-5.2' of git://git./linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm updates for 5.2-rc2

- Correctly annotate HYP-callable code to be non-traceable
- Remove Christoffer from the MAINTAINERS file as his request

5 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 24 May 2019 18:03:26 +0000 (11:03 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull more arm64 fixes from Will Deacon:

 - Fix incorrect LDADD instruction encoding in our disassembly macros

 - Disable the broken ARM64_PSEUDO_NMI support for now

 - Add workaround for Cortex-A76 CPU erratum #1463225

 - Handle Cortex-A76/Neoverse-N1 erratum #1418040 w/ existing workaround

 - Fix IORT build failure if IOMMU_SUPPORT=n

 - Fix place-relative module relocation range checking and its
   interaction with KASLR

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: insn: Add BUILD_BUG_ON() for invalid masks
  arm64: insn: Fix ldadd instruction encoding
  arm64: Kconfig: Make ARM64_PSEUDO_NMI depend on BROKEN for now
  arm64: Handle erratum 1418040 as a superset of erratum 1188873
  arm64/module: deal with ambiguity in PRELxx relocation ranges
  ACPI/IORT: Fix build error when IOMMU_SUPPORT is disabled
  arm64/kernel: kaslr: reduce module randomization range to 2 GB
  arm64: errata: Add workaround for Cortex-A76 erratum #1463225
  arm64: Remove useless message during oops

5 years agoMerge tag 'platform-drivers-x86-v5.2-2' of git://git.infradead.org/linux-platform...
Linus Torvalds [Fri, 24 May 2019 17:19:26 +0000 (10:19 -0700)]
Merge tag 'platform-drivers-x86-v5.2-2' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver fixes from Andy Shevchenko:
 "Some of Intel Cherrytrail based platforms depend on PMC clock to be
  always on. Here are a couple of quirks to the driver to support
  affected hardware"

* tag 'platform-drivers-x86-v5.2-2' of git://git.infradead.org/linux-platform-drivers-x86:
  platform/x86: pmc_atom: Add several Beckhoff Automation boards to critclk_systems DMI table
  platform/x86: pmc_atom: Add Lex 3I380D industrial PC to critclk_systems DMI table

5 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
Linus Torvalds [Fri, 24 May 2019 17:04:17 +0000 (10:04 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/evalenti/linux-soc-thermal

Pull thermal SoC fixes from Eduardo Valentin:

 - revert pinctrl settings on rockchip which causes boot failure on
   rk3288. The proper follow-up patch is being discussed, meanwhile
   the revert gets those booting again.

 - minor fixes on rcar and tegra

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: rcar_gen3_thermal: Update temperature conversion method
  thermal: rcar_gen3_thermal: Update calculation formula of IRQTEMP
  thermal: rcar_gen3_thermal: Update value of Tj_1
  thermal: tegra: Make tegra210_tsensor_thermtrips static
  Revert "thermal: rockchip: fix up the tsadc pinctrl setting error"

5 years agoMerge tag 'mmc-v5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 24 May 2019 16:57:11 +0000 (09:57 -0700)]
Merge tag 'mmc-v5.2-2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "Fix HS50 data hold time problem for a few variants of sdhci-iproc"

* tag 'mmc-v5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-iproc: Set NO_HISPD bit to fix HS50 data hold time problem
  mmc: sdhci-iproc: cygnus: Set NO_HISPD bit to fix HS50 data hold time problem

5 years agoMerge tag 'drm-fixes-2019-05-24-1' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 24 May 2019 16:12:46 +0000 (09:12 -0700)]
Merge tag 'drm-fixes-2019-05-24-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Nothing too unusual here for rc2. Except the amdgpu DMCU firmware
  loading fix caused build breakage with a different set of Kconfig
  options. I've just reverted it for now until the AMD folks can rewrite
  it to avoid that problem.

  i915:
   - boosting fix
   - bump ready task fixes
   - GVT - reset fix, error return, TRTT handling fix

  amdgpu:
   - DMCU firmware loading fix
   - Polaris 10 pci id for kfd
   - picasso screen corruption fix
   - SR-IOV fixes
   - vega driver reload fixes
   - SMU locking fix
   - compute profile fix for kfd

  vmwgfx:
   - integer overflow fixes
   - dma sg fix

  sun4i:
   - HDMI phy fixes

  gma500:
   - LVDS detection fix

  panfrost:
   - devfreq selection fix"

* tag 'drm-fixes-2019-05-24-1' of git://anongit.freedesktop.org/drm/drm: (32 commits)
  Revert "drm/amd/display: Don't load DMCU for Raven 1"
  drm/panfrost: Select devfreq
  drm/gma500/cdv: Check vbt config bits when detecting lvds panels
  drm/vmwgfx: integer underflow in vmw_cmd_dx_set_shader() leading to an invalid read
  drm/vmwgfx: NULL pointer dereference from vmw_cmd_dx_view_define()
  drm/vmwgfx: Use the dma scatter-gather iterator to get dma addresses
  drm/vmwgfx: Fix compat mode shader operation
  drm/vmwgfx: Fix user space handle equal to zero
  drm/vmwgfx: Don't send drm sysfs hotplug events on initial master set
  drm/i915/gvt: Fix an error code in ppgtt_populate_spt_by_guest_entry()
  drm/i915/gvt: do not let TRTTE and 0x4dfc write passthrough to hardware
  drm/i915/gvt: add 0x4dfc to gen9 save-restore list
  drm/i915/gvt: Tiled Resources mmios are in-context mmios for gen9+
  drm/i915/gvt: use cmd to restore in-context mmios to hw for gen9 platform
  drm/i915/gvt: emit init breadcrumb for gvt request
  drm/amdkfd: Fix compute profile switching
  drm/amdgpu: skip fw pri bo alloc for SRIOV
  drm/amd/powerplay: fix locking in smu_feature_set_supported()
  drm/amdgpu/gmc9: set vram_width properly for SR-IOV
  drm/amdgpu/soc15: skip reset on init
  ...

5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 125
Thomas Gleixner [Thu, 23 May 2019 09:15:02 +0000 (11:15 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 125

Based on 1 normalized pattern(s):

  osl gpl code release authorized by [jalil] [fadavi] this program is
  free software you can redistribute it and or modify it under the
  terms of the gnu general public license as published by the free
  software foundation either version 2 or at your option any later
  version this program is distributed in the hope that it will be
  useful but without any warranty without even the implied warranty of
  merchantability or fitness for a particular purpose see the gnu
  general public license for more details you should have received a
  copy of the gnu general public license along with this program see
  the file copying if not write to the free software foundation 675
  mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.689335553@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 123
Thomas Gleixner [Thu, 23 May 2019 09:15:00 +0000 (11:15 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 123

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms and conditions of the gnu general public license
  version 2 or later as published by the free software foundation this
  program is distributed in the hope that it will be useful but
  without any warranty without even the implied warranty of
  merchantability or fitness for a particular purpose see the gnu
  general public license for more details you should have received a
  copy of the gnu general public license along with this program if
  not see http www gnu org licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 7 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.504392586@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 122
Thomas Gleixner [Thu, 23 May 2019 09:14:59 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 122

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 2 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.414247666@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 121
Thomas Gleixner [Thu, 23 May 2019 09:14:58 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 121

Based on 1 normalized pattern(s):

  licensed under the gplv2 or at your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.323272658@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120
Thomas Gleixner [Thu, 23 May 2019 09:14:57 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not see the file copying or write to the free
  software foundation inc

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 12 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.231300438@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 119
Thomas Gleixner [Thu, 23 May 2019 09:14:56 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 119

Based on 1 normalized pattern(s):

  released under the gpl this program is free software you can
  redistribute it and or modify it under the terms of the gnu general
  public license as published by the free software foundation either
  version 2 of the license or at your option any later version this
  program is distributed in the hope that it will be useful but
  without any warranty without even the implied warranty of
  merchantability or fitness for a particular purpose see the gnu
  general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 2 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.124582774@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118
Thomas Gleixner [Thu, 23 May 2019 09:14:55 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 or at your option any
  later version this program is distributed in the hope that it will
  be useful but without any warranty without even the implied warranty
  of merchantability or fitness for a particular purpose see the gnu
  general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 44 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.032047323@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 116
Thomas Gleixner [Thu, 23 May 2019 09:14:53 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 116

Based on 1 normalized pattern(s):

  gpl license this program is free software you can redistribute it
  and or modify it under the terms of the gnu general public license
  as published by the free software foundation either version 2 of the
  license or at your option any later version this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091650.847878191@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114
Thomas Gleixner [Thu, 23 May 2019 09:14:51 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 8 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091650.663497195@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 113
Thomas Gleixner [Thu, 23 May 2019 09:14:50 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 113

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details to
  obtain the license point your browser to http www gnu org copyleft
  gpl html

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 26 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091650.572604764@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agotreewide: Replace GPLv2 boilerplate/reference with SPDX - rule 112
Thomas Gleixner [Thu, 23 May 2019 09:14:49 +0000 (11:14 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 112

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or
  later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 4 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091650.480557885@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>