platform/kernel/linux-starfive.git
2 years agocrypto: arm64/sm4 - Fix wrong dependency of NEON/CE implementation
Tianjia Zhang [Mon, 11 Apr 2022 03:13:13 +0000 (11:13 +0800)]
crypto: arm64/sm4 - Fix wrong dependency of NEON/CE implementation

Commit d2825fa9365d ("crypto: sm3,sm4 - move into crypto directory")
moved the sm4 library implementation from the lib/crypto directory to
the crypto directory and configured the name as CRYPTO_SM4. The arm64
SM4 NEON/CE implementation depends on this and needs to be modified
uniformly.

Fixes: 4f1aef9b806f ("crypto: arm64/sm4 - add ARMv8 NEON implementation")
Fixes: 5b33e0ec881c ("crypto: arm64/sm4 - add ARMv8 Crypto Extensions implementation")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/sgl - align the hardware sgl dma address
Yang Shen [Sat, 9 Apr 2022 09:33:09 +0000 (17:33 +0800)]
crypto: hisilicon/sgl - align the hardware sgl dma address

The hardware needs aligned sgl dma address. So expend the sgl_size to
align 64 bytes.

Signed-off-by: Yang Shen <shenyang39@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/zip - support last word dumping
Kai Ye [Sat, 9 Apr 2022 08:03:28 +0000 (16:03 +0800)]
crypto: hisilicon/zip - support last word dumping

1. Add some debugging registers.
2. Add last word dumping function during zip engine controller reset.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/hpre - support last word dumping
Kai Ye [Sat, 9 Apr 2022 08:03:27 +0000 (16:03 +0800)]
crypto: hisilicon/hpre - support last word dumping

1. Add some debugging registers.
2. Add last word dumping function during hpre engine controller reset.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/sec - support last word dumping
Kai Ye [Sat, 9 Apr 2022 08:03:26 +0000 (16:03 +0800)]
crypto: hisilicon/sec - support last word dumping

Add last word dumping function during sec engine controller reset.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/qm - add last word dumping for ACC
Kai Ye [Sat, 9 Apr 2022 08:03:25 +0000 (16:03 +0800)]
crypto: hisilicon/qm - add last word dumping for ACC

Add last word dumping function during acc engines controller reset.
The last words are reported to the printed information during the
reset. The dmesg information included qm debugging registers and
engine debugging registers. It can help to improve debugging
capability.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agoDocumentation: update debugfs doc for Hisilicon ZIP
Kai Ye [Sat, 9 Apr 2022 08:03:24 +0000 (16:03 +0800)]
Documentation: update debugfs doc for Hisilicon ZIP

Update documentation describing DebugFS that could help
to check the change of register values.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agoDocumentation: update debugfs doc for Hisilicon SEC
Kai Ye [Sat, 9 Apr 2022 08:03:23 +0000 (16:03 +0800)]
Documentation: update debugfs doc for Hisilicon SEC

Update documentation describing DebugFS that could help
to check the change of register values.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agoDocumentation: update debugfs doc for Hisilicon HPRE
Kai Ye [Sat, 9 Apr 2022 08:03:22 +0000 (16:03 +0800)]
Documentation: update debugfs doc for Hisilicon HPRE

Update documentation describing DebugFS that could help
to check the change of register values.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/zip - support register checking
Kai Ye [Sat, 9 Apr 2022 08:03:21 +0000 (16:03 +0800)]
crypto: hisilicon/zip - support register checking

The value of the register is changed after the task running. A debugfs
file node is added to help users to check the change of register values.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/sec - support register checking
Kai Ye [Sat, 9 Apr 2022 08:03:20 +0000 (16:03 +0800)]
crypto: hisilicon/sec - support register checking

The value of the register is changed after the task running. A debugfs
file node is added to help users to check the change of register values.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/hpre - support register checking
Kai Ye [Sat, 9 Apr 2022 08:03:19 +0000 (16:03 +0800)]
crypto: hisilicon/hpre - support register checking

The value of the register is changed after the task running. A debugfs
file node is added to help users to check the change of register values.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/qm - add register checking for ACC
Kai Ye [Sat, 9 Apr 2022 08:03:18 +0000 (16:03 +0800)]
crypto: hisilicon/qm - add register checking for ACC

Add register detection function to accelerator. Provided a tool that
user can checking differential register through Debugfs.
e.g.
    cd /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx
    cat diff_regs

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: ux500/hash - simplify if-if to if-else
Yihao Han [Fri, 8 Apr 2022 14:23:49 +0000 (07:23 -0700)]
crypto: ux500/hash - simplify if-if to if-else

Replace `if (!req_ctx->updated)` with `else` for simplification
and add curly brackets according to the kernel coding style:

"Do not unnecessarily use braces where a single statement will do."

...

"This does not apply if only one branch of a conditional statement is
a single statement; in the latter case use braces in both branches"

Please refer to:
https://www.kernel.org/doc/html/v5.17-rc8/process/coding-style.html

Signed-off-by: Yihao Han <hanyihao@vivo.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agohwrng: mpfs - add polarfire soc hwrng support
Conor Dooley [Fri, 8 Apr 2022 10:09:12 +0000 (10:09 +0000)]
hwrng: mpfs - add polarfire soc hwrng support

Add a driver to access the hardware random number generator on the
Polarfire SoC. The hwrng can only be accessed via the system controller,
so use the mailbox interface the system controller exposes to access the
hwrng.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - remove line wrapping for pfvf_ops functions
Marco Chiappero [Thu, 7 Apr 2022 16:54:55 +0000 (17:54 +0100)]
crypto: qat - remove line wrapping for pfvf_ops functions

Remove unnecessary line wrapping for the
adf_enable_vf2pf_interrupts() function, and harmonize pfvf_ops text.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - use u32 variables in all GEN4 pfvf_ops
Marco Chiappero [Thu, 7 Apr 2022 16:54:54 +0000 (17:54 +0100)]
crypto: qat - use u32 variables in all GEN4 pfvf_ops

Change adf_gen4_enable_vf2pf_interrupts() to use a u32 variable,
consistently with both other GEN4 pfvf_ops and pfvf_ops of other
generations.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - replace disable_vf2pf_interrupts()
Marco Chiappero [Thu, 7 Apr 2022 16:54:53 +0000 (17:54 +0100)]
crypto: qat - replace disable_vf2pf_interrupts()

As a consequence of the refactored VF2PF interrupt handling logic, a
function that disables specific VF2PF interrupts is no longer needed.
Instead, a simpler function that disables all the interrupts, also
hiding the device specific amount of VFs to be disabled from the
pfvf_ops users, would be sufficient.

This patch replaces disable_vf2pf_interrupts() with the new
disable_all_vf2pf_interrupts(), which doesn't need any argument and
disables all the VF2PF interrupts.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - leverage the GEN2 VF mask definiton
Marco Chiappero [Thu, 7 Apr 2022 16:54:52 +0000 (17:54 +0100)]
crypto: qat - leverage the GEN2 VF mask definiton

Replace hard coded VF masks in adf_gen2_pfvf.c with the recently
introduced ADF_GEN2_VF_MSK.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - rework the VF2PF interrupt handling logic
Marco Chiappero [Thu, 7 Apr 2022 16:54:51 +0000 (17:54 +0100)]
crypto: qat - rework the VF2PF interrupt handling logic

Change the VF2PF interrupt handler in the PF ISR and the definition of
the internal PFVF API to correct the current implementation, which can
result in missed interrupts.

More specifically, current HW generations consider a write to the mask
register, regardless of the value, as an acknowledge of any pending
VF2PF interrupt. Therefore, if there is an interrupt between the source
register read and the mask register write, such interrupt will not be
delivered and silently acknowledged, resulting in a lost VF2PF message.

To work around the problem, rather than disabling specific interrupts,
disable all the interrupts and re-enable only the ones that we are not
serving (excluding the already disabled ones too). This will force any
other pending interrupt to be triggered and be serviced by a subsequent
ISR.

This new approach requires, however, changes to the interrupt related
pfvf_ops functions. In particular, get_vf2pf_sources() has now been
removed in favor of disable_pending_vf2pf_interrupts(), which not only
retrieves and returns the pending (and enabled) sources, but also
disables them.
As a consequence, introduce the adf_disable_pending_vf2pf_interrupts()
utility in place of adf_disable_vf2pf_interrupts_irq(), which is no
longer needed.

Cc: stable@vger.kernel.org
Fixes: 993161d ("crypto: qat - fix handling of VF to PF interrupts")
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Co-developed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - fix off-by-one error in PFVF debug print
Marco Chiappero [Thu, 7 Apr 2022 16:54:50 +0000 (17:54 +0100)]
crypto: qat - fix off-by-one error in PFVF debug print

PFVF Block Message requests for CRC use 0-based values to indicate
amounts, which have to be remapped to 1-based values on the receiving
side.

This patch fixes one debug print which was however using the wire value.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - fix wording and formatting in code comment
Marco Chiappero [Thu, 7 Apr 2022 16:54:49 +0000 (17:54 +0100)]
crypto: qat - fix wording and formatting in code comment

Remove an unintentional extra space and improve the readability of a
PFVF related code comment.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - test PFVF registers for spurious interrupts on GEN4
Marco Chiappero [Thu, 7 Apr 2022 16:54:48 +0000 (17:54 +0100)]
crypto: qat - test PFVF registers for spurious interrupts on GEN4

Spurious PFVF interrupts can happen when either the ISR is invoked
without a valid source being set or, otherwise, when no interrupt bit
is set in the PFVF register containing the message.

The latter test was present for GEN2 devices but missing for GEN4, this
patch fills the gap.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - add check for invalid PFVF protocol version 0
Wojciech Ziemba [Thu, 7 Apr 2022 16:54:47 +0000 (17:54 +0100)]
crypto: qat - add check for invalid PFVF protocol version 0

PFVF protocol version 0 is not a valid version, but PF drivers
currently would report any such version from VFs as compatible.
This patch adds an extra check for the invalid PFVF protocol
version 0.

Signed-off-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - add missing restarting event notification in VFs
Marco Chiappero [Thu, 7 Apr 2022 16:54:46 +0000 (17:54 +0100)]
crypto: qat - add missing restarting event notification in VFs

VF drivers are notified via PFVF of the VFs being disabled, but
such notification was not propagated within the VF driver.
Dispatch the ADF_EVENT_RESTARTING event by adding a missing call
to adf_dev_restarting_notify().

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - remove unnecessary tests to detect PFVF support
Marco Chiappero [Thu, 7 Apr 2022 16:54:45 +0000 (17:54 +0100)]
crypto: qat - remove unnecessary tests to detect PFVF support

Previously, the GEN4 host driver supported SR-IOV but had no working
implementation of the PFVF protocol to communicate with VF drivers.
Since all the host drivers for QAT devices now support both SR-IOV and
PFVF, remove the old and unnecessary checks to test PFVF support.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - remove unused PFVF stubs
Giovanni Cabiddu [Thu, 7 Apr 2022 16:54:44 +0000 (17:54 +0100)]
crypto: qat - remove unused PFVF stubs

The functions adf_enable_pf2vf_interrupts(), adf_flush_vf_wq() and
adf_disable_pf2vf_interrupts() are not referenced when the driver is
compiled with CONFIG_PCI_IOV=n. This patch removes these unused stubs.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - remove unneeded braces
Marco Chiappero [Thu, 7 Apr 2022 16:54:43 +0000 (17:54 +0100)]
crypto: qat - remove unneeded braces

Remove unnecessary braces around a single statement in a for loop.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - fix ETR sources enabled by default on GEN2 devices
Marco Chiappero [Thu, 7 Apr 2022 16:54:42 +0000 (17:54 +0100)]
crypto: qat - fix ETR sources enabled by default on GEN2 devices

When the driver starts the device, it enables all the necessary
interrupts. However interrupts associated to host rings are enabled by
default on all GEN2 devices (except for dh895x) even when SR-IOV is
active. Fix this behaviour by checking if data structures associated to
VFs have been allocated to determine whether to enable such interrupts
or not.

Since the logic for the fix is the same across GEN2 devices, replace
the function to be fixed (adf_enable_ints()) with a single one
(adf_gen2_enable_ints()) in the common GEN2 code in adf_gen2_hw_data.c.
Likewise, remove the unnecessary duplication of defines too.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - set COMPRESSION capability for DH895XCC
Giovanni Cabiddu [Thu, 7 Apr 2022 16:54:41 +0000 (17:54 +0100)]
crypto: qat - set COMPRESSION capability for DH895XCC

The capability detection logic clears bits for the features that are
disabled in a certain SKU. For example, if the bit associate to
compression is not present in the LEGFUSE register, the correspondent
bit is cleared in the capability mask.
This change adds the compression capability to the mask as this was
missing in the commit that enhanced the capability detection logic.

Fixes: cfe4894eccdc ("crypto: qat - set COMPRESSION capability for QAT GEN2")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - set CIPHER capability for DH895XCC
Giovanni Cabiddu [Thu, 7 Apr 2022 16:54:40 +0000 (17:54 +0100)]
crypto: qat - set CIPHER capability for DH895XCC

Set the CIPHER capability for QAT DH895XCC devices if the hardware supports
it. This is done if both the CIPHER and the AUTHENTICATION engines are
available on the device.

Fixes: ad1332aa67ec ("crypto: qat - add support for capability detection")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: ccree - use fine grained DMA mapping dir
Gilad Ben-Yossef [Wed, 6 Apr 2022 08:11:39 +0000 (11:11 +0300)]
crypto: ccree - use fine grained DMA mapping dir

Use a fine grained specification of DMA mapping directions
in certain cases, allowing both a more optimized operation
as well as shushing out a harmless, though persky
dma-debug warning.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Reported-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: ccree - rearrange init calls to avoid race
Gilad Ben-Yossef [Wed, 6 Apr 2022 08:11:38 +0000 (11:11 +0300)]
crypto: ccree - rearrange init calls to avoid race

Rearrange init calls to avoid the rare race condition of
the cipher algs being registered and used while we still
init the hash code which uses the HW without proper lock.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Reported-by: Dung Nguyen <dung.nguyen.zy@renesas.com>
Tested-by: Jing Dan <jing.dan.nx@renesas.com>
Tested-by: Dung Nguyen <dung.nguyen.zy@renesas.com>
Fixes: 63893811b0fc("crypto: ccree - add ahash support")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: qat - stop using iommu_present()
Robin Murphy [Tue, 5 Apr 2022 12:25:11 +0000 (13:25 +0100)]
crypto: qat - stop using iommu_present()

Even if an IOMMU might be present for some PCI segment in the system,
that doesn't necessarily mean it provides translation for the device
we care about. Replace iommu_present() with a more appropriate check.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: cavium/nitrox - remove check of list iterator against head past the loop...
Jakob Koschel [Thu, 31 Mar 2022 21:59:10 +0000 (23:59 +0200)]
crypto: cavium/nitrox - remove check of list iterator against head past the loop body

When list_for_each_entry() completes the iteration over the whole list
without breaking the loop, the iterator value will be a bogus pointer
computed based on the head element.

While it is safe to use the pointer to determine if it was computed
based on the head element, either with list_entry_is_head() or
&pos->member == head, using the iterator variable after the loop should
be avoided.

In preparation to limit the scope of a list iterator to the list
traversal loop, use a dedicated pointer to point to the found element [1].

Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/
Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: ccp - When TSME and SME both detected notify user
Mario Limonciello [Thu, 31 Mar 2022 21:12:13 +0000 (16:12 -0500)]
crypto: ccp - When TSME and SME both detected notify user

CC_ATTR_HOST_MEM_ENCRYPT is used to relay that memory encryption has been
activated by the kernel.

As it's technically possible to enable both SME and TSME at the same time,
detect this scenario and notify the user that enabling TSME and SME at the
same time is unnecessary.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: ccp - Allow PSP driver to load without SEV/TEE support
Mario Limonciello [Thu, 31 Mar 2022 21:12:12 +0000 (16:12 -0500)]
crypto: ccp - Allow PSP driver to load without SEV/TEE support

Previously the PSP probe routine would fail if both SEV and TEE were
missing.  This is possibly the case for some client parts.

As capabilities can now be accessed from userspace, it may still be
useful to have the PSP driver finish loading so that those capabilities
can be read.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: ccp - Export PSP security bits to userspace
Mario Limonciello [Thu, 31 Mar 2022 21:12:11 +0000 (16:12 -0500)]
crypto: ccp - Export PSP security bits to userspace

The PSP sets several pre-defined bits in the capabilities
register to indicate that security attributes of the platform.

Export these attributes into userspace for administrators to
confirm platform is properly locked down.

Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: ccp - cache capability into psp device
Mario Limonciello [Thu, 31 Mar 2022 21:12:10 +0000 (16:12 -0500)]
crypto: ccp - cache capability into psp device

The results of the capability register will be used by future
code at runtime rather than just initialization.

Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: testmgr - test in-place en/decryption with two sglists
Eric Biggers [Sat, 26 Mar 2022 07:11:59 +0000 (00:11 -0700)]
crypto: testmgr - test in-place en/decryption with two sglists

As was established in the thread
https://lore.kernel.org/linux-crypto/20220223080400.139367-1-gilad@benyossef.com/T/#u,
many crypto API users doing in-place en/decryption don't use the same
scatterlist pointers for the source and destination, but rather use
separate scatterlists that point to the same memory.  This case isn't
tested by the self-tests, resulting in bugs.

This is the natural usage of the crypto API in some cases, so requiring
API users to avoid this usage is not reasonable.

Therefore, update the self-tests to start testing this case.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: x86 - eliminate anonymous module_init & module_exit
Randy Dunlap [Wed, 16 Mar 2022 19:20:09 +0000 (12:20 -0700)]
crypto: x86 - eliminate anonymous module_init & module_exit

Eliminate anonymous module_init() and module_exit(), which can lead to
confusion or ambiguity when reading System.map, crashes/oops/bugs,
or an initcall_debug log.

Give each of these init and exit functions unique driver-specific
names to eliminate the anonymous names.

Example 1: (System.map)
 ffffffff832fc78c t init
 ffffffff832fc79e t init
 ffffffff832fc8f8 t init

Example 2: (initcall_debug log)
 calling  init+0x0/0x12 @ 1
 initcall init+0x0/0x12 returned 0 after 15 usecs
 calling  init+0x0/0x60 @ 1
 initcall init+0x0/0x60 returned 0 after 2 usecs
 calling  init+0x0/0x9a @ 1
 initcall init+0x0/0x9a returned 0 after 74 usecs

Fixes: 64b94ceae8c1 ("crypto: blowfish - add x86_64 assembly implementation")
Fixes: 676a38046f4f ("crypto: camellia-x86_64 - module init/exit functions should be static")
Fixes: 0b95ec56ae19 ("crypto: camellia - add assembler implementation for x86_64")
Fixes: 56d76c96a9f3 ("crypto: serpent - add AVX2/x86_64 assembler implementation of serpent cipher")
Fixes: b9f535ffe38f ("[CRYPTO] twofish: i586 assembly version")
Fixes: ff0a70fe0536 ("crypto: twofish-x86_64-3way - module init/exit functions should be static")
Fixes: 8280daad436e ("crypto: twofish - add 3-way parallel x86_64 assembler implemention")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Cc: Joachim Fritschi <jfritschi@freenet.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: x86@kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: hisilicon/qm - optimize the barrier operation
Hui Tang [Wed, 16 Mar 2022 11:26:03 +0000 (19:26 +0800)]
crypto: hisilicon/qm - optimize the barrier operation

A 'dma_wmb' barrier is enough to guarantee previous writes
before accessing by acc device in the outer shareable domain.

A 'smp_wmb' barrier is enough to guarantee previous writes
before accessing by other cpus in the inner shareble domain.

Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: engine - Add parameter description in crypto_transfer_request() kernel-doc...
Yang Li [Wed, 16 Mar 2022 01:03:01 +0000 (09:03 +0800)]
crypto: engine - Add parameter description in crypto_transfer_request() kernel-doc comment

Add the description of @need_pump in crypto_transfer_request() kernel-doc
comment to remove warning found by running scripts/kernel-doc, which is
caused by using 'make W=1'.

crypto/crypto_engine.c:260: warning: Function parameter or member
'need_pump' not described in 'crypto_transfer_request'

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: arm64/sm4 - add ARMv8 Crypto Extensions implementation
Tianjia Zhang [Tue, 15 Mar 2022 09:44:54 +0000 (17:44 +0800)]
crypto: arm64/sm4 - add ARMv8 Crypto Extensions implementation

This adds ARMv8 implementations of SM4 in ECB, CBC, CFB and CTR
modes using Crypto Extensions, also includes key expansion operations
because the Crypto Extensions instruction is much faster than software
implementations.

The Crypto Extensions for SM4 can only run on ARMv8 implementations
that have support for these optional extensions.

Benchmark on T-Head Yitian-710 2.75 GHz, the data comes from the 218
mode of tcrypt. The abscissas are blocks of different lengths. The
data is tabulated and the unit is Mb/s:

sm4-generic |     16       64      128      256     1024     1420     4096
    ECB enc |  80.05    91.42    93.66    94.77    95.69    95.77    95.86
    ECB dec |  79.98    91.41    93.64    94.76    95.66    95.77    95.85
    CBC enc |  78.55    86.50    88.02    88.77    89.36    89.42    89.48
    CBC dec |  76.82    89.06    91.52    92.77    93.75    93.83    93.96
    CFB enc |  77.64    86.13    87.62    88.42    89.08    88.83    89.18
    CFB dec |  77.57    88.34    90.36    91.45    92.34    92.00    92.44
    CTR enc |  77.80    88.28    90.23    91.22    92.11    91.81    92.25
    CTR dec |  77.83    88.22    90.22    91.22    92.04    91.82    92.28
sm4-neon
    ECB enc |  28.31   112.77   203.03   209.89   215.49   202.11   210.59
    ECB dec |  28.36   113.45   203.23   210.00   215.52   202.13   210.65
    CBC enc |  79.32    87.02    88.51    89.28    89.85    89.89    89.97
    CBC dec |  28.29   112.20   203.30   209.82   214.99   201.51   209.95
    CFB enc |  79.59    87.16    88.54    89.30    89.83    89.62    89.92
    CFB dec |  28.12   111.05   202.47   209.02   214.21   210.90   209.12
    CTR enc |  28.04   108.81   200.62   206.65   211.78   208.78   206.74
    CTR dec |  28.02   108.82   200.45   206.62   211.78   208.74   206.70
sm4-ce-cipher
    ECB enc | 336.79   587.13   682.70   747.37   803.75   811.52   818.06
    ECB dec | 339.18   584.52   679.72   743.68   798.82   803.83   811.54
    CBC enc | 316.63   521.47   597.00   647.14   690.82   695.21   700.55
    CBC dec | 291.80   503.79   585.66   640.82   689.86   695.16   701.72
    CFB enc | 294.79   482.31   552.13   594.71   631.60   628.91   638.92
    CFB dec | 293.09   466.44   526.56   563.17   594.41   592.26   601.97
    CTR enc | 309.61   506.13   576.86   620.47   656.38   654.51   665.10
    CTR dec | 306.69   505.57   576.84   620.18   657.09   654.52   665.32
sm4-ce
    ECB enc | 366.96  1329.81  2024.29  2755.50  3790.07  3861.91  4051.40
    ECB dec | 367.30  1323.93  2018.72  2747.43  3787.39  3862.55  4052.62
    CBC enc | 358.09   682.68   807.24   885.35   958.29   963.60   973.73
    CBC dec | 366.51  1303.63  1978.64  2667.93  3624.53  3683.41  3856.08
    CFB enc | 351.51   681.26   807.81   893.10   968.54   969.17   985.83
    CFB dec | 354.98  1266.61  1929.63  2634.81  3614.23  3611.59  3841.68
    CTR enc | 324.23  1121.25  1689.44  2256.70  2981.90  3007.79  3060.74
    CTR dec | 324.18  1120.44  1694.31  2258.32  2982.01  3010.09  3060.99

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: arm64/sm4 - add ARMv8 NEON implementation
Tianjia Zhang [Tue, 15 Mar 2022 09:44:53 +0000 (17:44 +0800)]
crypto: arm64/sm4 - add ARMv8 NEON implementation

This adds ARMv8 NEON implementations of SM4 in ECB, CBC, CFB and CTR
modes. This implementation uses the plain NEON instruction set, All
S-BOX substitutions uses the tbl/tbx instructions of ARMv8, combined
with the out-of-order execution in CPU, this optimization supports
encryption of up to 8 blocks at the same time.

The performance of encrypting one block is not as good as software
implementation, so the encryption operations of CBC and CFB still
use pure software algorithms.

Benchmark on T-Head Yitian-710 2.75 GHz, the data comes from the 218
mode of tcrypt. The abscissas are blocks of different lengths. The
data is tabulated and the unit is Mb/s:

sm4-generic |     16       64      128      256     1024     1420     4096
    ECB enc |  80.05    91.42    93.66    94.77    95.69    95.77    95.86
    ECB dec |  79.98    91.41    93.64    94.76    95.66    95.77    95.85
    CBC enc |  78.55    86.50    88.02    88.77    89.36    89.42    89.48
    CBC dec |  76.82    89.06    91.52    92.77    93.75    93.83    93.96
    CFB enc |  77.64    86.13    87.62    88.42    89.08    88.83    89.18
    CFB dec |  77.57    88.34    90.36    91.45    92.34    92.00    92.44
    CTR enc |  77.80    88.28    90.23    91.22    92.11    91.81    92.25
    CTR dec |  77.83    88.22    90.22    91.22    92.04    91.82    92.28
sm4-neon
    ECB enc |  28.31   112.77   203.03   209.89   215.49   202.11   210.59
    ECB dec |  28.36   113.45   203.23   210.00   215.52   202.13   210.65
    CBC enc |  79.32    87.02    88.51    89.28    89.85    89.89    89.97
    CBC dec |  28.29   112.20   203.30   209.82   214.99   201.51   209.95
    CFB enc |  79.59    87.16    88.54    89.30    89.83    89.62    89.92
    CFB dec |  28.12   111.05   202.47   209.02   214.21   210.90   209.12
    CTR enc |  28.04   108.81   200.62   206.65   211.78   208.78   206.74
    CTR dec |  28.02   108.82   200.45   206.62   211.78   208.74   206.70

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: arm64/sm4-ce - rename to sm4-ce-cipher
Tianjia Zhang [Tue, 15 Mar 2022 09:44:52 +0000 (17:44 +0800)]
crypto: arm64/sm4-ce - rename to sm4-ce-cipher

The subsequent patches of the series will have an implementation
of SM4-ECB/CBC/CFB/CTR accelerated by the CE instruction set, which
conflicts with the current module name. In order to keep the naming
rules of the AES algorithm consistent, the sm4-ce algorithm is
renamed to sm4-ce-cipher.

In addition, the speed of sm4-ce-cipher is better than that of SM4
NEON. By the way, the priority of the algorithm is adjusted to 300,
which is also to leave room for the priority of SM4 NEON.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: sm4 - export sm4 constant arrays
Tianjia Zhang [Tue, 15 Mar 2022 09:44:51 +0000 (17:44 +0800)]
crypto: sm4 - export sm4 constant arrays

Export the constant arrays fk, ck, sbox of the SM4 algorithm, and
add the 'crypto_sm4_' prefix, where sbox is used in the SM4 NEON
implementation for the tbl/tbx instruction to replace the S-BOX,
and the fk, ck arrays are used in the SM4 CE implementation. Use
the sm4ekey instruction to speed up key expansion operations.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agocrypto: sm3,sm4 - move into crypto directory
Jason A. Donenfeld [Mon, 14 Mar 2022 03:11:01 +0000 (21:11 -0600)]
crypto: sm3,sm4 - move into crypto directory

The lib/crypto libraries live in lib because they are used by various
drivers of the kernel. In contrast, the various helper functions in
crypto are there because they're used exclusively by the crypto API. The
SM3 and SM4 helper functions were erroniously moved into lib/crypto/
instead of crypto/, even though there are no in-kernel users outside of
the crypto API of those functions. This commit moves them into crypto/.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Cc: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 years agoLinux 5.18-rc1
Linus Torvalds [Sun, 3 Apr 2022 21:08:21 +0000 (14:08 -0700)]
Linux 5.18-rc1

2 years agoMerge tag 'trace-v5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Sun, 3 Apr 2022 19:26:01 +0000 (12:26 -0700)]
Merge tag 'trace-v5.18-2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull more tracing updates from Steven Rostedt:

 - Rename the staging files to give them some meaning. Just
   stage1,stag2,etc, does not show what they are for

 - Check for NULL from allocation in bootconfig

 - Hold event mutex for dyn_event call in user events

 - Mark user events to broken (to work on the API)

 - Remove eBPF updates from user events

 - Remove user events from uapi header to keep it from being installed.

 - Move ftrace_graph_is_dead() into inline as it is called from hot
   paths and also convert it into a static branch.

* tag 'trace-v5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Move user_events.h temporarily out of include/uapi
  ftrace: Make ftrace_graph_is_dead() a static branch
  tracing: Set user_events to BROKEN
  tracing/user_events: Remove eBPF interfaces
  tracing/user_events: Hold event_mutex during dyn_event_add
  proc: bootconfig: Add null pointer check
  tracing: Rename the staging files for trace_events

2 years agoMerge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Linus Torvalds [Sun, 3 Apr 2022 19:21:14 +0000 (12:21 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fix from Stephen Boyd:
 "A single revert to fix a boot regression seen when clk_put() started
  dropping rate range requests. It's best to keep various systems
  booting so we'll kick this out and try again next time"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  Revert "clk: Drop the rate range on clk_put()"

2 years agoMerge tag 'x86-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 3 Apr 2022 19:15:47 +0000 (12:15 -0700)]
Merge tag 'x86-urgent-2022-04-03' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A set of x86 fixes and updates:

   - Make the prctl() for enabling dynamic XSTATE components correct so
     it adds the newly requested feature to the permission bitmap
     instead of overwriting it. Add a selftest which validates that.

   - Unroll string MMIO for encrypted SEV guests as the hypervisor
     cannot emulate it.

   - Handle supervisor states correctly in the FPU/XSTATE code so it
     takes the feature set of the fpstate buffer into account. The
     feature sets can differ between host and guest buffers. Guest
     buffers do not contain supervisor states. So far this was not an
     issue, but with enabling PASID it needs to be handled in the buffer
     offset calculation and in the permission bitmaps.

   - Avoid a gazillion of repeated CPUID invocations in by caching the
     values early in the FPU/XSTATE code.

   - Enable CONFIG_WERROR in x86 defconfig.

   - Make the X86 defconfigs more useful by adapting them to Y2022
     reality"

* tag 'x86-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu/xstate: Consolidate size calculations
  x86/fpu/xstate: Handle supervisor states in XSTATE permissions
  x86/fpu/xsave: Handle compacted offsets correctly with supervisor states
  x86/fpu: Cache xfeature flags from CPUID
  x86/fpu/xsave: Initialize offset/size cache early
  x86/fpu: Remove unused supervisor only offsets
  x86/fpu: Remove redundant XCOMP_BV initialization
  x86/sev: Unroll string mmio with CC_ATTR_GUEST_UNROLL_STRING_IO
  x86/config: Make the x86 defconfigs a bit more usable
  x86/defconfig: Enable WERROR
  selftests/x86/amx: Update the ARCH_REQ_XCOMP_PERM test
  x86/fpu/xstate: Fix the ARCH_REQ_XCOMP_PERM implementation

2 years agoMerge tag 'core-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 3 Apr 2022 19:08:26 +0000 (12:08 -0700)]
Merge tag 'core-urgent-2022-04-03' of git://git./linux/kernel/git/tip/tip

Pull RT signal fix from Thomas Gleixner:
 "Revert the RT related signal changes. They need to be reworked and
  generalized"

* tag 'core-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"

2 years agoMerge tag 'dma-mapping-5.18-1' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Sun, 3 Apr 2022 17:31:00 +0000 (10:31 -0700)]
Merge tag 'dma-mapping-5.18-1' of git://git.infradead.org/users/hch/dma-mapping

Pull more dma-mapping updates from Christoph Hellwig:

 - fix a regression in dma remap handling vs AMD memory encryption (me)

 - finally kill off the legacy PCI DMA API (Christophe JAILLET)

* tag 'dma-mapping-5.18-1' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: move pgprot_decrypted out of dma_pgprot
  PCI/doc: cleanup references to the legacy PCI DMA API
  PCI: Remove the deprecated "pci-dma-compat.h" API

2 years agoMerge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 3 Apr 2022 17:17:48 +0000 (10:17 -0700)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:

 - avoid unnecessary rebuilds for library objects

 - fix return value of __setup handlers

 - fix invalid input check for "crashkernel=" kernel option

 - silence KASAN warnings in unwind_frame

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame()
  ARM: 9190/1: kdump: add invalid input check for 'crashkernel=0'
  ARM: 9187/1: JIVE: fix return value of __setup handler
  ARM: 9189/1: decompressor: fix unneeded rebuilds of library objects

2 years agoRevert "clk: Drop the rate range on clk_put()"
Stephen Boyd [Sun, 3 Apr 2022 02:28:18 +0000 (19:28 -0700)]
Revert "clk: Drop the rate range on clk_put()"

This reverts commit 7dabfa2bc4803eed83d6f22bd6f045495f40636b. There are
multiple reports that this breaks boot on various systems. The common
theme is that orphan clks are having rates set on them when that isn't
expected. Let's revert it out for now so that -rc1 boots.

Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reported-by: Tony Lindgren <tony@atomide.com>
Reported-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Link: https://lore.kernel.org/r/366a0232-bb4a-c357-6aa8-636e398e05eb@samsung.com
Cc: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20220403022818.39572-1-sboyd@kernel.org
2 years agoMerge tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Sat, 2 Apr 2022 19:57:17 +0000 (12:57 -0700)]
Merge tag 'perf-tools-for-v5.18-2022-04-02' of git://git./linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:

 - Avoid SEGV if core.cpus isn't set in 'perf stat'.

 - Stop depending on .git files for building PERF-VERSION-FILE, used in
   'perf --version', fixing some perf tools build scenarios.

 - Convert tracepoint.py example to python3.

 - Update UAPI header copies from the kernel sources: socket,
   mman-common, msr-index, KVM, i915 and cpufeatures.

 - Update copy of libbpf's hashmap.c.

 - Directly return instead of using local ret variable in
   evlist__create_syswide_maps(), found by coccinelle.

* tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf python: Convert tracepoint.py example to python3
  perf evlist: Directly return instead of using local ret variable
  perf cpumap: More cpu map reuse by merge.
  perf cpumap: Add is_subset function
  perf evlist: Rename cpus to user_requested_cpus
  perf tools: Stop depending on .git files for building PERF-VERSION-FILE
  tools headers cpufeatures: Sync with the kernel sources
  tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  tools kvm headers arm64: Update KVM headers from the kernel sources
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  tools headers UAPI: Sync asm-generic/mman-common.h with the kernel
  perf beauty: Update copy of linux/socket.h with the kernel sources
  perf tools: Update copy of libbpf's hashmap.c
  perf stat: Avoid SEGV if core.cpus isn't set

2 years agoMerge tag 'kbuild-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masah...
Linus Torvalds [Sat, 2 Apr 2022 19:33:31 +0000 (12:33 -0700)]
Merge tag 'kbuild-fixes-v5.18' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix empty $(PYTHON) expansion.

 - Fix UML, which got broken by the attempt to suppress Clang warnings.

 - Fix warning message in modpost.

* tag 'kbuild-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  modpost: restore the warning message for missing symbol versions
  Revert "um: clang: Strip out -mno-global-merge from USER_CFLAGS"
  kbuild: Remove '-mno-global-merge'
  kbuild: fix empty ${PYTHON} in scripts/link-vmlinux.sh
  kconfig: remove stale comment about removed kconfig_print_symbol()

2 years agoMerge tag 'mips_5.18_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Linus Torvalds [Sat, 2 Apr 2022 19:14:38 +0000 (12:14 -0700)]
Merge tag 'mips_5.18_1' of git://git./linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:

 - build fix for gpio

 - fix crc32 build problems

 - check for failed memory allocations

* tag 'mips_5.18_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: crypto: Fix CRC32 code
  MIPS: rb532: move GPIOD definition into C-files
  MIPS: lantiq: check the return value of kzalloc()
  mips: sgi-ip22: add a check for the return of kzalloc()

2 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 2 Apr 2022 19:09:02 +0000 (12:09 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:

 - Only do MSR filtering for MSRs accessed by rdmsr/wrmsr

 - Documentation improvements

 - Prevent module exit until all VMs are freed

 - PMU Virtualization fixes

 - Fix for kvm_irq_delivery_to_apic_fast() NULL-pointer dereferences

 - Other miscellaneous bugfixes

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits)
  KVM: x86: fix sending PV IPI
  KVM: x86/mmu: do compare-and-exchange of gPTE via the user address
  KVM: x86: Remove redundant vm_entry_controls_clearbit() call
  KVM: x86: cleanup enter_rmode()
  KVM: x86: SVM: fix tsc scaling when the host doesn't support it
  kvm: x86: SVM: remove unused defines
  KVM: x86: SVM: move tsc ratio definitions to svm.h
  KVM: x86: SVM: fix avic spec based definitions again
  KVM: MIPS: remove reference to trap&emulate virtualization
  KVM: x86: document limitations of MSR filtering
  KVM: x86: Only do MSR filtering when access MSR by rdmsr/wrmsr
  KVM: x86/emulator: Emulate RDPID only if it is enabled in guest
  KVM: x86/pmu: Fix and isolate TSX-specific performance event logic
  KVM: x86: mmu: trace kvm_mmu_set_spte after the new SPTE was set
  KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs
  KVM: x86: Trace all APICv inhibit changes and capture overall status
  KVM: x86: Add wrappers for setting/clearing APICv inhibits
  KVM: x86: Make APICv inhibit reasons an enum and cleanup naming
  KVM: X86: Handle implicit supervisor access with SMAP
  KVM: X86: Rename variable smap to not_smap in permission_fault()
  ...

2 years agomodpost: restore the warning message for missing symbol versions
Masahiro Yamada [Fri, 1 Apr 2022 15:56:10 +0000 (00:56 +0900)]
modpost: restore the warning message for missing symbol versions

This log message was accidentally chopped off.

I was wondering why this happened, but checking the ML log, Mark
precisely followed my suggestion [1].

I just used "..." because I was too lazy to type the sentence fully.
Sorry for the confusion.

[1]: https://lore.kernel.org/all/CAK7LNAR6bXXk9-ZzZYpTqzFqdYbQsZHmiWspu27rtsFxvfRuVA@mail.gmail.com/

Fixes: 4a6795933a89 ("kbuild: modpost: Explicitly warn about unprototyped symbols")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2 years agoMerge tag 'for-5.18/drivers-2022-04-02' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 2 Apr 2022 18:03:03 +0000 (11:03 -0700)]
Merge tag 'for-5.18/drivers-2022-04-02' of git://git.kernel.dk/linux-block

Pull block driver fix from Jens Axboe:
 "Got two reports on nbd spewing warnings on load now, which is a
  regression from a commit that went into your tree yesterday.

  Revert the problematic change for now"

* tag 'for-5.18/drivers-2022-04-02' of git://git.kernel.dk/linux-block:
  Revert "nbd: fix possible overflow on 'first_minor' in nbd_dev_add()"

2 years agoMerge tag 'pci-v5.18-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 2 Apr 2022 17:54:52 +0000 (10:54 -0700)]
Merge tag 'pci-v5.18-changes-2' of git://git./linux/kernel/git/helgaas/pci

Pull pci fix from Bjorn Helgaas:

 - Fix Hyper-V "defined but not used" build issue added during merge
   window (YueHaibing)

* tag 'pci-v5.18-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: hv: Remove unused hv_set_msi_entry_from_desc()

2 years agoMerge tag 'tag-chrome-platform-for-v5.18' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Sat, 2 Apr 2022 17:44:18 +0000 (10:44 -0700)]
Merge tag 'tag-chrome-platform-for-v5.18' of git://git./linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Benson Leung:
 "cros_ec_typec:

   - Check for EC device - Fix a crash when using the cros_ec_typec
     driver on older hardware not capable of typec commands

   - Make try power role optional

   - Mux configuration reorganization series from Prashant

  cros_ec_debugfs:

   - Fix use after free. Thanks Tzung-bi

  sensorhub:

   - cros_ec_sensorhub fixup - Split trace include file

  misc:

   - Add new mailing list for chrome-platform development:

chrome-platform@lists.linux.dev

     Now with patchwork!"

* tag 'tag-chrome-platform-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_ec_debugfs: detach log reader wq from devm
  platform: chrome: Split trace include file
  platform/chrome: cros_ec_typec: Update mux flags during partner removal
  platform/chrome: cros_ec_typec: Configure muxes at start of port update
  platform/chrome: cros_ec_typec: Get mux state inside configure_mux
  platform/chrome: cros_ec_typec: Move mux flag checks
  platform/chrome: cros_ec_typec: Check for EC device
  platform/chrome: cros_ec_typec: Make try power role optional
  MAINTAINERS: platform-chrome: Add new chrome-platform@lists.linux.dev list

2 years agoRevert "nbd: fix possible overflow on 'first_minor' in nbd_dev_add()"
Jens Axboe [Sat, 2 Apr 2022 17:40:23 +0000 (11:40 -0600)]
Revert "nbd: fix possible overflow on 'first_minor' in nbd_dev_add()"

This reverts commit 6d35d04a9e18990040e87d2bbf72689252669d54.

Both Gabriel and Borislav report that this commit casues a regression
with nbd:

sysfs: cannot create duplicate filename '/dev/block/43:0'

Revert it before 5.18-rc1 and we'll investigage this separately in
due time.

Link: https://lore.kernel.org/all/YkiJTnFOt9bTv6A2@zn.tnic/
Reported-by: Gabriel L. Somlo <somlo@cmu.edu>
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agowatch_queue: Free the page array when watch_queue is dismantled
Eric Dumazet [Mon, 28 Mar 2022 17:07:04 +0000 (18:07 +0100)]
watch_queue: Free the page array when watch_queue is dismantled

Commit 7ea1a0124b6d ("watch_queue: Free the alloc bitmap when the
watch_queue is torn down") took care of the bitmap, but not the page
array.

  BUG: memory leak
  unreferenced object 0xffff88810d9bc140 (size 32):
  comm "syz-executor335", pid 3603, jiffies 4294946994 (age 12.840s)
  hex dump (first 32 bytes):
    40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00  @.@.............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
     kmalloc_array include/linux/slab.h:621 [inline]
     kcalloc include/linux/slab.h:652 [inline]
     watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251
     pipe_ioctl+0x82/0x140 fs/pipe.c:632
     vfs_ioctl fs/ioctl.c:51 [inline]
     __do_sys_ioctl fs/ioctl.c:874 [inline]
     __se_sys_ioctl fs/ioctl.c:860 [inline]
     __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860
     do_syscall_x64 arch/x86/entry/common.c:50 [inline]

Reported-by: syzbot+25ea042ae28f3888727a@syzkaller.appspotmail.com
Fixes: c73be61cede5 ("pipe: Add general notification queue support")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Jann Horn <jannh@google.com>
Link: https://lore.kernel.org/r/20220322004654.618274-1-eric.dumazet@gmail.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agotracing: mark user_events as BROKEN
Steven Rostedt (Google) [Fri, 1 Apr 2022 18:39:03 +0000 (14:39 -0400)]
tracing: mark user_events as BROKEN

After being merged, user_events become more visible to a wider audience
that have concerns with the current API.

It is too late to fix this for this release, but instead of a full
revert, just mark it as BROKEN (which prevents it from being selected in
make config).  Then we can work finding a better API.  If that fails,
then it will need to be completely reverted.

To not have the code silently bitrot, still allow building it with
COMPILE_TEST.

And to prevent the uapi header from being installed, then later changed,
and then have an old distro user space see the old version, move the
header file out of the uapi directory.

Surround the include with CONFIG_COMPILE_TEST to the current location,
but when the BROKEN tag is taken off, it will use the uapi directory,
and fail to compile.  This is a good way to remind us to move the header
back.

Link: https://lore.kernel.org/all/20220330155835.5e1f6669@gandalf.local.home
Link: https://lkml.kernel.org/r/20220330201755.29319-1-mathieu.desnoyers@efficios.com
Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agotracing: Move user_events.h temporarily out of include/uapi
Steven Rostedt (Google) [Fri, 1 Apr 2022 18:39:03 +0000 (14:39 -0400)]
tracing: Move user_events.h temporarily out of include/uapi

While user_events API is under development and has been marked for broken
to not let the API become fixed, move the header file out of the uapi
directory. This is to prevent it from being installed, then later changed,
and then have an old distro user space update with a new kernel, where
applications see the user_events being available, but the old header is in
place, and then they get compiled incorrectly.

Also, surround the include with CONFIG_COMPILE_TEST to the current
location, but when the BROKEN tag is taken off, it will use the uapi
directory, and fail to compile. This is a good way to remind us to move
the header back.

Link: https://lore.kernel.org/all/20220330155835.5e1f6669@gandalf.local.home
Link: https://lkml.kernel.org/r/20220330201755.29319-1-mathieu.desnoyers@efficios.com
Link: https://lkml.kernel.org/r/20220401143903.188384f3@gandalf.local.home
Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 years agoftrace: Make ftrace_graph_is_dead() a static branch
Christophe Leroy [Wed, 30 Mar 2022 07:00:19 +0000 (09:00 +0200)]
ftrace: Make ftrace_graph_is_dead() a static branch

ftrace_graph_is_dead() is used on hot paths, it just reads a variable
in memory and is not worth suffering function call constraints.

For instance, at entry of prepare_ftrace_return(), inlining it avoids
saving prepare_ftrace_return() parameters to stack and restoring them
after calling ftrace_graph_is_dead().

While at it using a static branch is even more performant and is
rather well adapted considering that the returned value will almost
never change.

Inline ftrace_graph_is_dead() and replace 'kill_ftrace_graph' bool
by a static branch.

The performance improvement is noticeable.

Link: https://lkml.kernel.org/r/e0411a6a0ed3eafff0ad2bc9cd4b0e202b4617df.1648623570.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 years agotracing: Set user_events to BROKEN
Steven Rostedt (Google) [Wed, 30 Mar 2022 19:58:35 +0000 (15:58 -0400)]
tracing: Set user_events to BROKEN

After being merged, user_events become more visible to a wider audience
that have concerns with the current API. It is too late to fix this for
this release, but instead of a full revert, just mark it as BROKEN (which
prevents it from being selected in make config). Then we can work finding
a better API. If that fails, then it will need to be completely reverted.

Link: https://lore.kernel.org/all/2059213643.196683.1648499088753.JavaMail.zimbra@efficios.com/
Link: https://lkml.kernel.org/r/20220330155835.5e1f6669@gandalf.local.home
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 years agotracing/user_events: Remove eBPF interfaces
Beau Belgrave [Tue, 29 Mar 2022 17:30:51 +0000 (10:30 -0700)]
tracing/user_events: Remove eBPF interfaces

Remove eBPF interfaces within user_events to ensure they are fully
reviewed.

Link: https://lore.kernel.org/all/20220329165718.GA10381@kbox/
Link: https://lkml.kernel.org/r/20220329173051.10087-1-beaub@linux.microsoft.com
Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 years agotracing/user_events: Hold event_mutex during dyn_event_add
Beau Belgrave [Mon, 28 Mar 2022 22:32:25 +0000 (15:32 -0700)]
tracing/user_events: Hold event_mutex during dyn_event_add

Make sure the event_mutex is properly held during dyn_event_add call.
This is required when adding dynamic events.

Link: https://lkml.kernel.org/r/20220328223225.1992-1-beaub@linux.microsoft.com
Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 years agoproc: bootconfig: Add null pointer check
Lv Ruyi [Tue, 29 Mar 2022 10:40:04 +0000 (10:40 +0000)]
proc: bootconfig: Add null pointer check

kzalloc is a memory allocation function which can return NULL when some
internal memory errors happen. It is safer to add null pointer check.

Link: https://lkml.kernel.org/r/20220329104004.2376879-1-lv.ruyi@zte.com.cn
Cc: stable@vger.kernel.org
Fixes: c1a3c36017d4 ("proc: bootconfig: Add /proc/bootconfig to show boot config list")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 years agotracing: Rename the staging files for trace_events
Steven Rostedt (Google) [Tue, 29 Mar 2022 20:50:44 +0000 (16:50 -0400)]
tracing: Rename the staging files for trace_events

When looking for implementation of different phases of the creation of the
TRACE_EVENT() macro, it is pretty useless when all helper macro
redefinitions are in files labeled "stageX_defines.h". Rename them to
state which phase the files are for. For instance, when looking for the
defines that are used to create the event fields, seeing
"stage4_event_fields.h" gives the developer a good idea that the defines
are in that file.

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 years agoKVM: x86: fix sending PV IPI
Li RongQing [Wed, 9 Mar 2022 08:35:44 +0000 (16:35 +0800)]
KVM: x86: fix sending PV IPI

If apic_id is less than min, and (max - apic_id) is greater than
KVM_IPI_CLUSTER_SIZE, then the third check condition is satisfied but
the new apic_id does not fit the bitmask.  In this case __send_ipi_mask
should send the IPI.

This is mostly theoretical, but it can happen if the apic_ids on three
iterations of the loop are for example 1, KVM_IPI_CLUSTER_SIZE, 0.

Fixes: aaffcfd1e82 ("KVM: X86: Implement PV IPIs in linux guest")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Message-Id: <1646814944-51801-1-git-send-email-lirongqing@baidu.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86/mmu: do compare-and-exchange of gPTE via the user address
Paolo Bonzini [Tue, 29 Mar 2022 16:56:24 +0000 (12:56 -0400)]
KVM: x86/mmu: do compare-and-exchange of gPTE via the user address

FNAME(cmpxchg_gpte) is an inefficient mess.  It is at least decent if it
can go through get_user_pages_fast(), but if it cannot then it tries to
use memremap(); that is not just terribly slow, it is also wrong because
it assumes that the VM_PFNMAP VMA is contiguous.

The right way to do it would be to do the same thing as
hva_to_pfn_remapped() does since commit add6a0cd1c5b ("KVM: MMU: try to
fix up page faults before giving up", 2016-07-05), using follow_pte()
and fixup_user_fault() to determine the correct address to use for
memremap().  To do this, one could for example extract hva_to_pfn()
for use outside virt/kvm/kvm_main.c.  But really there is no reason to
do that either, because there is already a perfectly valid address to
do the cmpxchg() on, only it is a userspace address.  That means doing
user_access_begin()/user_access_end() and writing the code in assembly
to handle exceptions correctly.  Worse, the guest PTE can be 8-byte
even on i686 so there is the extra complication of using cmpxchg8b to
account for.  But at least it is an efficient mess.

(Thanks to Linus for suggesting improvement on the inline assembly).

Reported-by: Qiuhao Li <qiuhao@sysec.org>
Reported-by: Gaoning Pan <pgn@zju.edu.cn>
Reported-by: Yongkang Jia <kangel@zju.edu.cn>
Reported-by: syzbot+6cde2282daa792c49ab8@syzkaller.appspotmail.com
Debugged-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Tested-by: Maxim Levitsky <mlevitsk@redhat.com>
Cc: stable@vger.kernel.org
Fixes: bd53cb35a3e9 ("X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: Remove redundant vm_entry_controls_clearbit() call
Zhenzhong Duan [Fri, 11 Mar 2022 10:26:43 +0000 (18:26 +0800)]
KVM: x86: Remove redundant vm_entry_controls_clearbit() call

When emulating exit from long mode, EFER_LMA is cleared with
vmx_set_efer().  This will already unset the VM_ENTRY_IA32E_MODE control
bit as requested by SDM, so there is no need to unset VM_ENTRY_IA32E_MODE
again in exit_lmode() explicitly.  In case EFER isn't supported by
hardware, long mode isn't supported, so exit_lmode() cannot be reached.

Note that, thanks to the shadow controls mechanism, this change doesn't
eliminate vmread or vmwrite.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20220311102643.807507-3-zhenzhong.duan@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: cleanup enter_rmode()
Zhenzhong Duan [Fri, 11 Mar 2022 10:26:42 +0000 (18:26 +0800)]
KVM: x86: cleanup enter_rmode()

vmx_set_efer() sets uret->data but, in fact if the value of uret->data
will be used vmx_setup_uret_msrs() will have rewritten it with the value
returned by update_transition_efer().  uret->data is consumed if and only
if uret->load_into_hardware is true, and vmx_setup_uret_msrs() takes care
of (a) updating uret->data before setting uret->load_into_hardware to true
(b) setting uret->load_into_hardware to false if uret->data isn't updated.

Opportunistically use "vmx" directly instead of redoing to_vmx().

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20220311102643.807507-2-zhenzhong.duan@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: SVM: fix tsc scaling when the host doesn't support it
Maxim Levitsky [Tue, 22 Mar 2022 17:24:48 +0000 (19:24 +0200)]
KVM: x86: SVM: fix tsc scaling when the host doesn't support it

It was decided that when TSC scaling is not supported,
the virtual MSR_AMD64_TSC_RATIO should still have the default '1.0'
value.

However in this case kvm_max_tsc_scaling_ratio is not set,
which breaks various assumptions.

Fix this by always calculating kvm_max_tsc_scaling_ratio regardless of
host support.  For consistency, do the same for VMX.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220322172449.235575-8-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agokvm: x86: SVM: remove unused defines
Maxim Levitsky [Tue, 22 Mar 2022 17:24:47 +0000 (19:24 +0200)]
kvm: x86: SVM: remove unused defines

Remove some unused #defines from svm.c

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220322172449.235575-7-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: SVM: move tsc ratio definitions to svm.h
Maxim Levitsky [Tue, 22 Mar 2022 17:24:46 +0000 (19:24 +0200)]
KVM: x86: SVM: move tsc ratio definitions to svm.h

Another piece of SVM spec which should be in the header file

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220322172449.235575-6-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: SVM: fix avic spec based definitions again
Maxim Levitsky [Tue, 22 Mar 2022 17:24:45 +0000 (19:24 +0200)]
KVM: x86: SVM: fix avic spec based definitions again

Due to wrong rebase, commit
4a204f7895878 ("KVM: SVM: Allow AVIC support on system w/ physical APIC ID > 255")

moved avic spec #defines back to avic.c.

Move them back, and while at it extend AVIC_DOORBELL_PHYSICAL_ID_MASK to 12
bits as well (it will be used in nested avic)

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220322172449.235575-5-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: MIPS: remove reference to trap&emulate virtualization
Paolo Bonzini [Sun, 13 Mar 2022 14:05:22 +0000 (15:05 +0100)]
KVM: MIPS: remove reference to trap&emulate virtualization

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220313140522.1307751-1-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: document limitations of MSR filtering
Paolo Bonzini [Tue, 15 Mar 2022 22:17:15 +0000 (18:17 -0400)]
KVM: x86: document limitations of MSR filtering

MSR filtering requires an exit to userspace that is hard to implement and
would be very slow in the case of nested VMX vmexit and vmentry MSR
accesses.  Document the limitation.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: Only do MSR filtering when access MSR by rdmsr/wrmsr
Hou Wenlong [Mon, 7 Mar 2022 12:26:33 +0000 (20:26 +0800)]
KVM: x86: Only do MSR filtering when access MSR by rdmsr/wrmsr

If MSR access is rejected by MSR filtering,
kvm_set_msr()/kvm_get_msr() would return KVM_MSR_RET_FILTERED,
and the return value is only handled well for rdmsr/wrmsr.
However, some instruction emulation and state transition also
use kvm_set_msr()/kvm_get_msr() to do msr access but may trigger
some unexpected results if MSR access is rejected, E.g. RDPID
emulation would inject a #UD but RDPID wouldn't cause a exit
when RDPID is supported in hardware and ENABLE_RDTSCP is set.
And it would also cause failure when load MSR at nested entry/exit.
Since msr filtering is based on MSR bitmap, it is better to only
do MSR filtering for rdmsr/wrmsr.

Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Message-Id: <2b2774154f7532c96a6f04d71c82a8bec7d9e80b.1646655860.git.houwenlong.hwl@antgroup.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86/emulator: Emulate RDPID only if it is enabled in guest
Hou Wenlong [Wed, 2 Mar 2022 13:15:14 +0000 (21:15 +0800)]
KVM: x86/emulator: Emulate RDPID only if it is enabled in guest

When RDTSCP is supported but RDPID is not supported in host,
RDPID emulation is available. However, __kvm_get_msr() would
only fail when RDTSCP/RDPID both are disabled in guest, so
the emulator wouldn't inject a #UD when RDPID is disabled but
RDTSCP is enabled in guest.

Fixes: fb6d4d340e05 ("KVM: x86: emulate RDPID")
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Message-Id: <1dfd46ae5b76d3ed87bde3154d51c64ea64c99c1.1646226788.git.houwenlong.hwl@antgroup.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86/pmu: Fix and isolate TSX-specific performance event logic
Like Xu [Wed, 9 Mar 2022 08:42:57 +0000 (16:42 +0800)]
KVM: x86/pmu: Fix and isolate TSX-specific performance event logic

HSW_IN_TX* bits are used in generic code which are not supported on
AMD. Worse, these bits overlap with AMD EventSelect[11:8] and hence
using HSW_IN_TX* bits unconditionally in generic code is resulting in
unintentional pmu behavior on AMD. For example, if EventSelect[11:8]
is 0x2, pmc_reprogram_counter() wrongly assumes that
HSW_IN_TX_CHECKPOINTED is set and thus forces sampling period to be 0.

Also per the SDM, both bits 32 and 33 "may only be set if the processor
supports HLE or RTM" and for "IN_TXCP (bit 33): this bit may only be set
for IA32_PERFEVTSEL2."

Opportunistically eliminate code redundancy, because if the HSW_IN_TX*
bit is set in pmc->eventsel, it is already set in attr.config.

Reported-by: Ravi Bangoria <ravi.bangoria@amd.com>
Reported-by: Jim Mattson <jmattson@google.com>
Fixes: 103af0a98788 ("perf, kvm: Support the in_tx/in_tx_cp modifiers in KVM arch perfmon emulation v5")
Co-developed-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220309084257.88931-1-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: mmu: trace kvm_mmu_set_spte after the new SPTE was set
Maxim Levitsky [Wed, 2 Mar 2022 10:24:57 +0000 (12:24 +0200)]
KVM: x86: mmu: trace kvm_mmu_set_spte after the new SPTE was set

It makes more sense to print new SPTE value than the
old value.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220302102457.588450-1-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs
Jim Mattson [Sat, 26 Feb 2022 23:41:31 +0000 (15:41 -0800)]
KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs

AMD EPYC CPUs never raise a #GP for a WRMSR to a PerfEvtSeln MSR. Some
reserved bits are cleared, and some are not. Specifically, on
Zen3/Milan, bits 19 and 42 are not cleared.

When emulating such a WRMSR, KVM should not synthesize a #GP,
regardless of which bits are set. However, undocumented bits should
not be passed through to the hardware MSR. So, rather than checking
for reserved bits and synthesizing a #GP, just clear the reserved
bits.

This may seem pedantic, but since KVM currently does not support the
"Host/Guest Only" bits (41:40), it is necessary to clear these bits
rather than synthesizing #GP, because some popular guests (e.g Linux)
will set the "Host Only" bit even on CPUs that don't support
EFER.SVME, and they don't expect a #GP.

For example,

root@Ubuntu1804:~# perf stat -e r26 -a sleep 1

 Performance counter stats for 'system wide':

                 0      r26

       1.001070977 seconds time elapsed

Feb 23 03:59:58 Ubuntu1804 kernel: [  405.379957] unchecked MSR access error: WRMSR to 0xc0010200 (tried to write 0x0000020000130026) at rIP: 0xffffffff9b276a28 (native_write_msr+0x8/0x30)
Feb 23 03:59:58 Ubuntu1804 kernel: [  405.379958] Call Trace:
Feb 23 03:59:58 Ubuntu1804 kernel: [  405.379963]  amd_pmu_disable_event+0x27/0x90

Fixes: ca724305a2b0 ("KVM: x86/vPMU: Implement AMD vPMU code for KVM")
Reported-by: Lotus Fenn <lotusf@google.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Like Xu <likexu@tencent.com>
Reviewed-by: David Dunn <daviddunn@google.com>
Message-Id: <20220226234131.2167175-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: Trace all APICv inhibit changes and capture overall status
Sean Christopherson [Fri, 11 Mar 2022 04:35:17 +0000 (04:35 +0000)]
KVM: x86: Trace all APICv inhibit changes and capture overall status

Trace all APICv inhibit changes instead of just those that result in
APICv being (un)inhibited, and log the current state.  Debugging why
APICv isn't working is frustrating as it's hard to see why APICv is still
inhibited, and logging only the first inhibition means unnecessary onion
peeling.

Opportunistically drop the export of the tracepoint, it is not and should
not be used by vendor code due to the need to serialize toggling via
apicv_update_lock.

Note, using the common flow means kvm_apicv_init() switched from atomic
to non-atomic bitwise operations.  The VM is unreachable at init, so
non-atomic is perfectly ok.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220311043517.17027-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: Add wrappers for setting/clearing APICv inhibits
Sean Christopherson [Fri, 11 Mar 2022 04:35:16 +0000 (04:35 +0000)]
KVM: x86: Add wrappers for setting/clearing APICv inhibits

Add set/clear wrappers for toggling APICv inhibits to make the call sites
more readable, and opportunistically rename the inner helpers to align
with the new wrappers and to make them more readable as well.  Invert the
flag from "activate" to "set"; activate is painfully ambiguous as it's
not obvious if the inhibit is being activated, or if APICv is being
activated, in which case the inhibit is being deactivated.

For the functions that take @set, swap the order of the inhibit reason
and @set so that the call sites are visually similar to those that bounce
through the wrapper.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220311043517.17027-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86: Make APICv inhibit reasons an enum and cleanup naming
Sean Christopherson [Fri, 11 Mar 2022 04:35:15 +0000 (04:35 +0000)]
KVM: x86: Make APICv inhibit reasons an enum and cleanup naming

Use an enum for the APICv inhibit reasons, there is no meaning behind
their values and they most definitely are not "unsigned longs".  Rename
the various params to "reason" for consistency and clarity (inhibit may
be confused as a command, i.e. inhibit APICv, instead of the reason that
is getting toggled/checked).

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220311043517.17027-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: X86: Handle implicit supervisor access with SMAP
Lai Jiangshan [Fri, 11 Mar 2022 07:03:44 +0000 (15:03 +0800)]
KVM: X86: Handle implicit supervisor access with SMAP

There are two kinds of implicit supervisor access
implicit supervisor access when CPL = 3
implicit supervisor access when CPL < 3

Current permission_fault() handles only the first kind for SMAP.

But if the access is implicit when SMAP is on, data may not be read
nor write from any user-mode address regardless the current CPL.

So the second kind should be also supported.

The first kind can be detect via CPL and access mode: if it is
supervisor access and CPL = 3, it must be implicit supervisor access.

But it is not possible to detect the second kind without extra
information, so this patch adds an artificial PFERR_EXPLICIT_ACCESS
into @access. This extra information also works for the first kind, so
the logic is changed to use this information for both cases.

The value of PFERR_EXPLICIT_ACCESS is deliberately chosen to be bit 48
which is in the most significant 16 bits of u64 and less likely to be
forced to change due to future hardware uses it.

This patch removes the call to ->get_cpl() for access mode is determined
by @access.  Not only does it reduce a function call, but also remove
confusions when the permission is checked for nested TDP.  The nested
TDP shouldn't have SMAP checking nor even the L2's CPL have any bearing
on it.  The original code works just because it is always user walk for
NPT and SMAP fault is not set for EPT in update_permission_bitmask.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Message-Id: <20220311070346.45023-5-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: X86: Rename variable smap to not_smap in permission_fault()
Lai Jiangshan [Fri, 11 Mar 2022 07:03:43 +0000 (15:03 +0800)]
KVM: X86: Rename variable smap to not_smap in permission_fault()

Comments above the variable says the bit is set when SMAP is overridden
or the same meaning in update_permission_bitmask(): it is not subjected
to SMAP restriction.

Renaming it to reflect the negative implication and make the code better
readability.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Message-Id: <20220311070346.45023-4-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: X86: Fix comments in update_permission_bitmask
Lai Jiangshan [Fri, 11 Mar 2022 07:03:42 +0000 (15:03 +0800)]
KVM: X86: Fix comments in update_permission_bitmask

The commit 09f037aa48f3 ("KVM: MMU: speedup update_permission_bitmask")
refactored the code of update_permission_bitmask() and change the
comments.  It added a condition into a list to match the new code,
so the number/order for conditions in the comments should be updated
too.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Message-Id: <20220311070346.45023-3-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: X86: Change the type of access u32 to u64
Lai Jiangshan [Fri, 11 Mar 2022 07:03:41 +0000 (15:03 +0800)]
KVM: X86: Change the type of access u32 to u64

Change the type of access u32 to u64 for FNAME(walk_addr) and
->gva_to_gpa().

The kinds of accesses are usually combinations of UWX, and VMX/SVM's
nested paging adds a new factor of access: is it an access for a guest
page table or for a final guest physical address.

And SMAP relies a factor for supervisor access: explicit or implicit.

So @access in FNAME(walk_addr) and ->gva_to_gpa() is better to include
all these information to do the walk.

Although @access(u32) has enough bits to encode all the kinds, this
patch extends it to u64:
o Extra bits will be in the higher 32 bits, so that we can
  easily obtain the traditional access mode (UWX) by converting
  it to u32.
o Reuse the value for the access kind defined by SVM's nested
  paging (PFERR_GUEST_FINAL_MASK and PFERR_GUEST_PAGE_MASK) as
  @error_code in kvm_handle_page_fault().

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Message-Id: <20220311070346.45023-2-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: Remove dirty handling from gfn_to_pfn_cache completely
David Woodhouse [Thu, 3 Mar 2022 15:41:12 +0000 (15:41 +0000)]
KVM: Remove dirty handling from gfn_to_pfn_cache completely

It isn't OK to cache the dirty status of a page in internal structures
for an indefinite period of time.

Any time a vCPU exits the run loop to userspace might be its last; the
VMM might do its final check of the dirty log, flush the last remaining
dirty pages to the destination and complete a live migration. If we
have internal 'dirty' state which doesn't get flushed until the vCPU
is finally destroyed on the source after migration is complete, then
we have lost data because that will escape the final copy.

This problem already exists with the use of kvm_vcpu_unmap() to mark
pages dirty in e.g. VMX nesting.

Note that the actual Linux MM already considers the page to be dirty
since we have a writeable mapping of it. This is just about the KVM
dirty logging.

For the nesting-style use cases (KVM_GUEST_USES_PFN) we will need to
track which gfn_to_pfn_caches have been used and explicitly mark the
corresponding pages dirty before returning to userspace. But we would
have needed external tracking of that anyway, rather than walking the
full list of GPCs to find those belonging to this vCPU which are dirty.

So let's rely *solely* on that external tracking, and keep it simple
rather than laying a tempting trap for callers to fall into.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220303154127.202856-3-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: Use enum to track if cached PFN will be used in guest and/or host
Sean Christopherson [Thu, 3 Mar 2022 15:41:11 +0000 (15:41 +0000)]
KVM: Use enum to track if cached PFN will be used in guest and/or host

Replace the guest_uses_pa and kernel_map booleans in the PFN cache code
with a unified enum/bitmask. Using explicit names makes it easier to
review and audit call sites.

Opportunistically add a WARN to prevent passing garbage; instantating a
cache without declaring its usage is either buggy or pointless.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220303154127.202856-2-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: SVM: Fix kvm_cache_regs.h inclusions for is_guest_mode()
Peter Gonda [Fri, 4 Mar 2022 16:10:32 +0000 (08:10 -0800)]
KVM: SVM: Fix kvm_cache_regs.h inclusions for is_guest_mode()

Include kvm_cache_regs.h to pick up the definition of is_guest_mode(),
which is referenced by nested_svm_virtualize_tpr() in svm.h. Remove
include from svm_onhpyerv.c which was done only because of lack of
include in svm.h.

Fixes: 883b0a91f41ab ("KVM: SVM: Move Nested SVM Implementation to nested.c")
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Peter Gonda <pgonda@google.com>
Message-Id: <20220304161032.2270688-1-pgonda@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: x86/pmu: Use different raw event masks for AMD and Intel
Jim Mattson [Tue, 8 Mar 2022 01:24:52 +0000 (17:24 -0800)]
KVM: x86/pmu: Use different raw event masks for AMD and Intel

The third nybble of AMD's event select overlaps with Intel's IN_TX and
IN_TXCP bits. Therefore, we can't use AMD64_RAW_EVENT_MASK on Intel
platforms that support TSX.

Declare a raw_event_mask in the kvm_pmu structure, initialize it in
the vendor-specific pmu_refresh() functions, and use that mask for
PERF_TYPE_RAW configurations in reprogram_gp_counter().

Fixes: 710c47651431 ("KVM: x86/pmu: Use AMD64_RAW_EVENT_MASK for PERF_TYPE_RAW")
Signed-off-by: Jim Mattson <jmattson@google.com>
Message-Id: <20220308012452.3468611-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>