John Snow [Mon, 19 Jan 2015 20:16:00 +0000 (15:16 -0500)]
libqos/ahci: Functional register helpers
Introduce a set of "static inline" register helpers that are intended to
replace the current set of macros with more functional versions that are
better suited to inclusion in libqos than porcelain macros.
As a stopgap measure before eliminating the porcelain macros, define them
to use the new functions defined in the ahci.h header.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-13-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:59 +0000 (15:15 -0500)]
qtest/ahci: remove guest_malloc global
Make helper routines rely on the earmarked
guest allocator object with AHCIQState/QOSSTate instead.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-12-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:58 +0000 (15:15 -0500)]
qtest/ahci: remove pcibus global
Rely on the PCI Device's bus pointer instead.
One less global to worry about.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-11-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:57 +0000 (15:15 -0500)]
qtest/ahci: finalize AHCIQState consolidation
Move barsize, ahci_fingerprint and capabilities registers into
the AHCIQState object, removing global ahci-related state
from the ahci-test.c file.
More churn, less globals.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-10-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:56 +0000 (15:15 -0500)]
qtest/ahci: Store hba_base in AHCIQState
Store the HBA memory base address in the new state object, to simplify
function prototypes and encourage a more functional testing style.
This causes a lot of churn, but this patch is as "simplified" as I could
get it to be. This patch is therefore fairly mechanical and straightforward:
Any case where we pass "hba_base" has been consolidated into the AHCIQState
object and we pass the one unified parameter.
Any case where we reference "ahci" and "hba_state" have been modified to use
"ahci->dev" for the PCIDevice and "ahci->hba_state" to get at the base memory
address, accordingly.
Notes:
- A needless return is removed from start_ahci_device.
- For ease of reviewing, this patch can be reproduced (mostly) by:
# Replace (ahci, hba_base) prototypes with unified parameter
's/(QPCIDevice \*ahci, void \*\?\*hba_base/(AHCIQState *ahci/'
# Replace (ahci->dev, hba_base) calls with unified parameter
's/(ahci->dev, &\?hba_base)/(ahci)/'
# Replace calls to PCI config space using "ahci" with "ahci->dev"
's/qpci_config_\(read\|write\)\(.\)(ahci,/qpci_config_\1\2(ahci->dev,/'
After these, the remaining differences are easy to review by hand.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-9-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:55 +0000 (15:15 -0500)]
libqos: add pc specific interface
Create an operations structure so that the libqos interface can be
architecture agnostic, and create a pc-specific interface to functions
like qtest_boot.
Move the libqos object in the Makefile from being ahci-test only to
being linked with all tests that utilize the libqos features.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-8-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:54 +0000 (15:15 -0500)]
libqos: Update QGuestAllocator to be opaque
To avoid the architecture-specific implementations of the generic qtest
allocator having to know about fields within the allocator, add a
page_size setter method for users or arch specializations to use.
The allocator will assume a default page_size for general use, but it
can always be overridden.
Since this was the last instance of code directly using properties of the
QGuestAllocator object directly, modify the type to be opaque and move
the structure inside of malloc.c.
mlist_new, which was previously exported, is made static local to malloc.c,
as it has no external users.
[Peter Maydell <peter.maydell@linaro.org> reported the following clang
warning:
tests/libqos/malloc.c:35:3: warning:
redefinition of typedef 'QGuestAllocator' is a C11 feature
[-Wtypedef-redefinition]
} QGuestAllocator;
I converted typedef struct ... QGuestAllocator; to struct ...;
--Stefan]
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Marc MarĂ <marc.mari.barcelo@gmail.com>
Message-id:
1421698563-6977-7-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:53 +0000 (15:15 -0500)]
libqos: add alloc_init_flags
Allow a generic interface to alloc_init_flags,
not just through pc_alloc_init_flags.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-6-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:52 +0000 (15:15 -0500)]
libqos: add qtest_vboot
Add a va_list variant of the qtest_boot function.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-5-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:51 +0000 (15:15 -0500)]
libqos: create libqos.c
The intent of this file is to serve as a misc. utilities file to be
shared amongst tests that are utilizing libqos facilities.
In a later patch, migration test helpers will be added to libqos.c that
will allow simplified testing of migration cases where libqos is
"Just Enough OS" for migrations testing.
The addition of the AHCIQState structure will also allow us to eliminate
global variables inside of qtests to manage allocators and test instances
in a better, more functional way.
libqos.c:
- Add qtest_boot
- Add qtest_shutdown
libqos.h:
- Create QOSState structure for allocator and QTestState.
ahci-test.c:
- Move qtest_boot and qtest_shutdown to libqos.c/h
- Create AHCIQState to interface with new qtest_boot/shutdown prototypes
- Modify tests slightly to use new types.
For now, the new object file is only linked to ahci-test, because it still
relies on pc architecture specific code in libqos. The next two patches will
reorganize the code to be more general.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-4-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:50 +0000 (15:15 -0500)]
qtest/ahci: Create ahci.h
Extract defines and other information to ahci.h, to be shared with other
tests if they so please.
At the very least, reduce clutter in the test file itself.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-3-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
John Snow [Mon, 19 Jan 2015 20:15:49 +0000 (15:15 -0500)]
libqos: Split apart pc_alloc_init
Move the list-specific initialization over into
malloc.c, to keep all of the list implementation
details within the same file.
The allocation and freeing of these structures are
now both back within the same layer.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1421698563-6977-2-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Max Reitz [Fri, 6 Feb 2015 21:06:18 +0000 (16:06 -0500)]
iotests: Add test for drive-mirror with NBD target
When the drive-mirror block job is completed, it will call bdrv_swap()
on the source and the target BDS; this should obviously not result in a
segmentation fault.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1423256778-3340-4-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Max Reitz [Fri, 6 Feb 2015 21:06:17 +0000 (16:06 -0500)]
iotests: Add "wait" functionality to _cleanup_qemu
The qemu process does not always need to be killed, just waiting for it
can be fine, too. This introduces a way to do so.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1423256778-3340-3-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Max Reitz [Fri, 6 Feb 2015 21:06:16 +0000 (16:06 -0500)]
nbd: Drop BDS backpointer
Before this patch, the "opaque" pointer in an NBD BDS points to a
BDRVNBDState, which contains an NbdClientSession object, which in turn
contains a pointer to the BDS. This pointer may become invalid due to
bdrv_swap(), so drop it, and instead pass the BDS directly to the
nbd-client.c functions which then retrieve the NbdClientSession object
from there.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id:
1423256778-3340-2-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Peter Maydell [Fri, 13 Feb 2015 11:44:49 +0000 (11:44 +0000)]
Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-
20150212' into staging
Convert to linked list.
# gpg: Signature made Fri 13 Feb 2015 05:40:41 GMT using RSA key ID
4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
* remotes/rth/tags/pull-tcg-
20150212:
tcg: Remove unused opcodes
tcg: Implement insert_op_before
tcg: Remove opcodes instead of noping them out
tcg: Put opcodes in a linked list
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
tcg: Move emit of INDEX_op_end into gen_tb_end
tcg: Reduce ifdefs in tcg-op.c
tcg: Move some opcode generation functions out of line
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 13 Feb 2015 11:19:22 +0000 (11:19 +0000)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-
20150213' into staging
target-arm queue:
* PCIe support in virt board
* Support 32-bit guests on 64-bit KVM hosts in virt board
* Fixes to avoid C undefined behaviour
# gpg: Signature made Fri 13 Feb 2015 05:53:07 GMT using RSA key ID
14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-
20150213:
target-arm: A64: Avoid signed shifts in disas_ldst_pair()
target-arm: A64: Avoid left shifting negative integers in disas_pc_rel_addr
target-arm: A64: Fix handling of rotate in logic_imm_decode_wmask
target-arm: A64: Fix shifts into sign bit
target-arm: Add AArch32 guest support to KVM64
target-arm: Add 32/64-bit register sync
target-arm: Add feature parsing to virt
target-arm: Add CPU property to disable AArch64
pci: Move PCI VGA to pci.mak
arm: Add PCIe host bridge in virt machine
pci: Add generic PCIe host bridge
pci: Allocate PCIe host bridge PCI ID
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 13 Feb 2015 05:46:09 +0000 (05:46 +0000)]
target-arm: A64: Avoid signed shifts in disas_ldst_pair()
Avoid shifting potentially negative signed offset values in
disas_ldst_pair() by keeping the offset in a uint64_t rather
than an int64_t.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
1423233250-15853-5-git-send-email-peter.maydell@linaro.org
Peter Maydell [Fri, 13 Feb 2015 05:46:09 +0000 (05:46 +0000)]
target-arm: A64: Avoid left shifting negative integers in disas_pc_rel_addr
Shifting a negative integer left is undefined behaviour in C.
Avoid it by assembling and shifting the offset fields as
unsigned values and then sign extending as the final action.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
1423233250-15853-4-git-send-email-peter.maydell@linaro.org
Peter Maydell [Fri, 13 Feb 2015 05:46:09 +0000 (05:46 +0000)]
target-arm: A64: Fix handling of rotate in logic_imm_decode_wmask
The code in logic_imm_decode_wmask attempts to rotate a mask
value within the bottom 'e' bits of the value with
mask = (mask >> r) | (mask << (e - r));
This has two issues:
* if the element size is 64 then a rotate by zero results
in a shift left by 64, which is undefined behaviour
* if the element size is smaller than 64 then this will
leave junk in the value at bit 'e' and above, which is
not valid input to bitfield_replicate(). As it happens,
the bits at bit 'e' to '2e - r' are exactly the ones
which bitfield_replicate is going to copy in there,
so this isn't a "wrong code generated" bug, but it's
confusing and if we ever put an assert in
bitfield_replicate it would fire on valid guest code.
Fix the former by not doing anything if r is zero, and
the latter by masking with bitmask64(e).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
1423233250-15853-3-git-send-email-peter.maydell@linaro.org
Peter Maydell [Fri, 13 Feb 2015 05:46:08 +0000 (05:46 +0000)]
target-arm: A64: Fix shifts into sign bit
Fix attempts to shift into the sign bit of an int, which is undefined
behaviour in C and warned about by the clang sanitizer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
1423233250-15853-2-git-send-email-peter.maydell@linaro.org
Greg Bellows [Fri, 13 Feb 2015 05:46:08 +0000 (05:46 +0000)]
target-arm: Add AArch32 guest support to KVM64
Add 32-bit to/from 64-bit register synchronization on register gets and puts.
Set EL1_32BIT feature flag passed to KVM
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Message-id:
1423736974-14254-5-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Greg Bellows [Fri, 13 Feb 2015 05:46:08 +0000 (05:46 +0000)]
target-arm: Add 32/64-bit register sync
Add AArch32 to AArch64 register sychronization functions.
Replace manual register synchronization with new functions in
aarch64_cpu_do_interrupt() and HELPER(exception_return)().
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
1423736974-14254-4-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Greg Bellows [Fri, 13 Feb 2015 05:46:08 +0000 (05:46 +0000)]
target-arm: Add feature parsing to virt
Added machvirt parsing of feature keywords added to the -cpu command line
option. Parsing occurs during machine initialization.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
1423736974-14254-3-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Greg Bellows [Fri, 13 Feb 2015 05:46:08 +0000 (05:46 +0000)]
target-arm: Add CPU property to disable AArch64
Adds registration and get/set functions for enabling/disabling the AArch64
execution state on AArch64 CPUs. By default AArch64 execution state is enabled
on AArch64 CPUs, setting the property to off, will disable the execution state.
The below QEMU invocation would have AArch64 execution state disabled.
$ ./qemu-system-aarch64 -machine virt -cpu cortex-a57,aarch64=off
Also adds stripping of features from CPU model string in acquiring the ARM CPU
by name.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
1423736974-14254-2-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Alexander Graf [Fri, 13 Feb 2015 05:46:08 +0000 (05:46 +0000)]
pci: Move PCI VGA to pci.mak
Every platform that supports PCI can also spawn the Bochs VGA PCI adapter. Move
it to pci.mak to enable it for everyone.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Alexander Graf [Fri, 13 Feb 2015 05:46:08 +0000 (05:46 +0000)]
arm: Add PCIe host bridge in virt machine
Now that we have a working "generic" PCIe host bridge driver, we can plug
it into ARM's virt machine to always have PCIe available to normal ARM VMs.
I've successfully managed to expose a Bochs VGA device, XHCI and an e1000
into an AArch64 VM with this and they all lived happily ever after.
Signed-off-by: Alexander Graf <agraf@suse.de>
Tested-by: Claudio Fontana <claudio.fontana@huawei.com>
[PMM: Squashed in fix for off-by-one error in bus-range DT property
from Laszlo Ersek <lersek@redhat.com>]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Alexander Graf [Fri, 13 Feb 2015 05:46:07 +0000 (05:46 +0000)]
pci: Add generic PCIe host bridge
With simple exposure of MMFG, ioport window, mmio window and an IRQ line we
can successfully create a workable PCIe host bridge that can be mapped anywhere
and only needs to get described to the OS using whatever means it likes.
This patch implements such a "generic" host bridge. It handles 4 legacy IRQ
lines. MSIs need to be handled external to the host bridge.
This device is particularly useful for the "pci-host-ecam-generic" driver in
Linux.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Tested-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Alexander Graf [Fri, 13 Feb 2015 05:46:07 +0000 (05:46 +0000)]
pci: Allocate PCIe host bridge PCI ID
We are going to introduce a PCIe host controller that doesn't exist that
way in real hardware, but still needs to expose some PCIe root device which
has PCI IDs.
Allocate a PCI ID in the Red Hat space that we use for other devices of this
kind.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Richard Henderson [Mon, 31 Mar 2014 03:40:35 +0000 (20:40 -0700)]
tcg: Remove unused opcodes
We no longer need INDEX_op_end to terminate the list, nor do we
need 5 forms of nop, since we just remove the TCGOp instead.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Richard Henderson [Mon, 31 Mar 2014 00:14:02 +0000 (17:14 -0700)]
tcg: Implement insert_op_before
Rather reserving space in the op stream for optimization,
let the optimizer add ops as necessary.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Richard Henderson [Sun, 30 Mar 2014 23:51:54 +0000 (16:51 -0700)]
tcg: Remove opcodes instead of noping them out
With the linked list scheme we need not leave nops in the stream
that we need to process later.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Richard Henderson [Fri, 19 Sep 2014 20:49:15 +0000 (13:49 -0700)]
tcg: Put opcodes in a linked list
The previous setup required ops and args to be completely sequential,
and was error prone when it came to both iteration and optimization.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Richard Henderson [Sun, 30 Mar 2014 22:36:56 +0000 (15:36 -0700)]
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
The method by which we count the number of ops emitted
is going to change. Abstract that away into some inlines.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Richard Henderson [Sun, 30 Mar 2014 21:50:30 +0000 (14:50 -0700)]
tcg: Move emit of INDEX_op_end into gen_tb_end
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Richard Henderson [Fri, 19 Sep 2014 18:41:05 +0000 (11:41 -0700)]
tcg: Reduce ifdefs in tcg-op.c
Almost completely eliminates the ifdefs in this file, improving
confidence in the lesser used 32-bit builds.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Richard Henderson [Fri, 19 Sep 2014 18:39:20 +0000 (11:39 -0700)]
tcg: Move some opcode generation functions out of line
Some of these functions are really quite large. We have a number of
things that ought to be circularly dependent, but we duplicated code
to break that chain for the inlines.
This saved 25% of the code size of one of the translators I examined.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Peter Maydell [Wed, 11 Feb 2015 05:14:41 +0000 (05:14 +0000)]
Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-
20150210.0' into staging
RCU fixes and cleanup (Paolo Bonzini)
Switch to v2 IOMMU interface (Alex Williamson)
DEBUG build fix (Alexey Kardashevskiy)
# gpg: Signature made Tue 10 Feb 2015 17:37:06 GMT using RSA key ID
3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg: aka "Alex Williamson <alex@shazbot.org>"
# gpg: aka "Alex Williamson <alwillia@redhat.com>"
# gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>"
* remotes/awilliam/tags/vfio-update-
20150210.0:
vfio: Fix debug message compile error
vfio: Use vfio type1 v2 IOMMU interface
vfio: unmap and free BAR data in instance_finalize
vfio: free dynamically-allocated data in instance_finalize
vfio: cleanup vfio_get_device error path, remove vfio_populate_device callback
memory: unregister AddressSpace MemoryListener within BQL
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Alexey Kardashevskiy [Tue, 10 Feb 2015 17:25:44 +0000 (10:25 -0700)]
vfio: Fix debug message compile error
This fixes a compiler error which occurs if DEBUG_VFIO is defined.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alex Williamson [Tue, 10 Feb 2015 17:25:44 +0000 (10:25 -0700)]
vfio: Use vfio type1 v2 IOMMU interface
The difference between v1 and v2 is fairly subtle, simply more
deterministic behavior for unmaps. The v1 interface allows the user
to attempt to unmap sub-regions of previous mappings, returning
success with zero size if unable to comply. This was a reflection of
the underlying IOMMU API. The v2 interface requires that the user
may only unmap fully contained mappings, ie. an unmap cannot intersect
or bisect a previous mapping, but may cover multiple mappings. QEMU
never made use of the sub-region v1 support anyway, so we can support
either v1 or v2. We'll favor v2 since it's newer.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Paolo Bonzini [Tue, 10 Feb 2015 17:25:44 +0000 (10:25 -0700)]
vfio: unmap and free BAR data in instance_finalize
In the case of VFIO, the unrealize callback is too early to munmap the
BARs. The munmap must be delayed until memory accesses are complete.
To do this, split vfio_unmap_bars in two. The removal step, now called
vfio_unregister_bars, remains in vfio_exitfn. The reclamation step
is vfio_unmap_bars and is moved to the instance_finalize callback.
Similarly, quirk MemoryRegions have to be removed during
vfio_unregister_bars, but freeing the data structure must be delayed
to vfio_unmap_bars.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Paolo Bonzini [Tue, 10 Feb 2015 17:25:44 +0000 (10:25 -0700)]
vfio: free dynamically-allocated data in instance_finalize
In order to enable out-of-BQL address space lookup, destruction of
devices needs to be split in two phases.
Unrealize is the first phase; once it complete no new accesses will
be started, but there may still be pending memory accesses can still
be completed.
The second part is freeing the device, which only happens once all memory
accesses are complete. At this point the reference count has dropped to
zero, an RCU grace period must have completed (because the RCU-protected
FlatViews hold a reference to the device via memory_region_ref). This is
when instance_finalize is called.
Freeing data belongs in an instance_finalize callback, because the
dynamically allocated memory can still be used after unrealize by the
pending memory accesses.
This starts the process by creating an instance_finalize callback and
freeing most of the dynamically-allocated data in instance_finalize.
Because instance_finalize is also called on error paths or also when
the device is actually not realized, the common code needs some changes
to be ready for this. The error path in vfio_initfn can be simplified too.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Paolo Bonzini [Tue, 10 Feb 2015 17:25:44 +0000 (10:25 -0700)]
vfio: cleanup vfio_get_device error path, remove vfio_populate_device callback
Now that vfio_put_base_device is called unconditionally at instance_finalize
time, it can be called twice if vfio_populate_device fails. This works
but it is slightly harder to follow.
Change vfio_get_device to not touch the vbasedev struct until it will
definitely succeed, moving the vfio_populate_device call back to vfio-pci.
This way, vfio_put_base_device will only be called once.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Paolo Bonzini [Tue, 10 Feb 2015 17:25:44 +0000 (10:25 -0700)]
memory: unregister AddressSpace MemoryListener within BQL
address_space_destroy_dispatch is called from an RCU callback and hence
outside the iothread mutex (BQL). However, after address_space_destroy
no new accesses can hit the destroyed AddressSpace so it is not necessary
to observe changes to the memory map. Move the memory_listener_unregister
call earlier, to make it thread-safe again.
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Fixes:
374f2981d1f10bc4307f250f24b2a7ddb9b14be0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Peter Maydell [Tue, 10 Feb 2015 09:51:46 +0000 (09:51 +0000)]
Merge remote-tracking branch 'remotes/mjt/tags/pull-trivial-patches-2015-02-10' into staging
trivial patches for 2015-02-10
# gpg: Signature made Tue 10 Feb 2015 07:27:11 GMT using RSA key ID
A4C3D7DB
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg: aka "Michael Tokarev <mjt@corpit.ru>"
# gpg: aka "Michael Tokarev <mjt@debian.org>"
* remotes/mjt/tags/pull-trivial-patches-2015-02-10: (45 commits)
virtio: Fix warning caused by missing 'static' attribute
vga: Fix warning caused by missing 'static' attribute
stubs: Fix warning caused by missing include statement
spice: Add missing 'static' attribute
serial: Fix warnings caused by missing 'static' attribute
moxie: Fix warning caused by missing include statement
migration: Fix warnings caused by missing 'static' attribute
migration: Fix warning caused by missing declaration of vmstate_dummy
disas/sh4: Fix warning caused by missing 'static' attribute
translate-all: Use g_try_malloc() for dynamic translator buffer
vnc: g_realloc() can't fail, bury dead error handling
rdma: g_malloc0() can't fail, bury dead error handling
kvm: g_malloc() can't fail, bury dead error handling
rtl8139: g_malloc() can't fail, bury dead error handling
onenand: g_malloc() can't fail, bury dead error handling
Fix name error in migration stream analyzation script
QJSON: fix typo in author's email address
util/uri: URI member path can be null, compare more carfully
util/uri: realloc2n() can't fail, drop dead error handling
util/uri: uri_new() can't fail, drop dead error handling
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Stefan Weil [Fri, 6 Feb 2015 21:43:17 +0000 (22:43 +0100)]
virtio: Fix warning caused by missing 'static' attribute
Warning from the Sparse static analysis tool:
hw/char/virtio-serial-bus.c:31:3:
warning: symbol 'vserdevices' was not declared. Should it be static?
Cc: Amit Shah <amit.shah@redhat.com>
Cc: Anthony Liguori <aliguori@amazon.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:16 +0000 (22:43 +0100)]
vga: Fix warning caused by missing 'static' attribute
Warning from the Sparse static analysis tool:
hw/display/vga.c:2012:26: warning:
symbol 'vmstate_vga_endian' was not declared. Should it be static?
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:15 +0000 (22:43 +0100)]
stubs: Fix warning caused by missing include statement
Warning from the Sparse static analysis tool:
stubs/qtest.c:14:6:
warning: symbol 'qtest_allowed' was not declared. Should it be static?
Add the missing include statement which declares qtest_allowed.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:14 +0000 (22:43 +0100)]
spice: Add missing 'static' attribute
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:13 +0000 (22:43 +0100)]
serial: Fix warnings caused by missing 'static' attribute
Warnings from the Sparse static analysis tool:
hw/char/serial.c:630:26: warning: symbol
'vmstate_serial_thr_ipending' was not declared. Should it be static?
hw/char/serial.c:646:26: warning: symbol
'vmstate_serial_tsr' was not declared. Should it be static?
hw/char/serial.c:665:26: warning: symbol
'vmstate_serial_recv_fifo' was not declared. Should it be static?
hw/char/serial.c:681:26: warning: symbol
'vmstate_serial_xmit_fifo' was not declared. Should it be static?
hw/char/serial.c:697:26: warning: symbol
'vmstate_serial_fifo_timeout_timer' was not declared. Should it be static?
hw/char/serial.c:713:26: warning: symbol
'vmstate_serial_timeout_ipending' was not declared. Should it be static?
hw/char/serial.c:729:26: warning: symbol
'vmstate_serial_poll' was not declared. Should it be static?
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:12 +0000 (22:43 +0100)]
moxie: Fix warning caused by missing include statement
Warning from the Sparse static analysis tool:
target-moxie/machine.c:4:26:
warning: symbol 'vmstate_moxie_cpu' was not declared. Should it be static?
machine.h includes the missing declaration.
Cc: Anthony Green <green@moxielogic.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:11 +0000 (22:43 +0100)]
migration: Fix warnings caused by missing 'static' attribute
Warnings from the Sparse static analysis tool:
migration-rdma.c:151:12: warning:
symbol 'wrid_desc' was not declared. Should it be static?
migration-rdma.c:190:12: warning:
symbol 'control_desc' was not declared. Should it be static?
migration-rdma.c:3301:19: warning:
symbol 'rdma_read_ops' was not declared. Should it be static?
migration-rdma.c:3308:19: warning:
symbol 'rdma_write_ops' was not declared. Should it be static?
Cc: Juan Quintela <quintela@redhat.com>
Cc: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:10 +0000 (22:43 +0100)]
migration: Fix warning caused by missing declaration of vmstate_dummy
Warning from the Sparse static analysis tool:
stubs/vmstate.c:4:26: warning:
symbol 'vmstate_dummy' was not declared. Should it be static?
Cc: Juan Quintela <quintela@redhat.com>
Cc: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Stefan Weil [Fri, 6 Feb 2015 21:43:09 +0000 (22:43 +0100)]
disas/sh4: Fix warning caused by missing 'static' attribute
Warning from the Sparse static analysis tool:
disas/sh4.c:335:22: warning:
symbol 'sh_table' was not declared. Should it be static?
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 4 Feb 2015 10:26:07 +0000 (11:26 +0100)]
translate-all: Use g_try_malloc() for dynamic translator buffer
The USE_MMAP code can fail, and the caller handles the failure
already. Let the !USE_MMAP code fail as well, for consistency.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 4 Feb 2015 10:26:06 +0000 (11:26 +0100)]
vnc: g_realloc() can't fail, bury dead error handling
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 4 Feb 2015 10:26:05 +0000 (11:26 +0100)]
rdma: g_malloc0() can't fail, bury dead error handling
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 4 Feb 2015 10:26:04 +0000 (11:26 +0100)]
kvm: g_malloc() can't fail, bury dead error handling
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 4 Feb 2015 10:26:03 +0000 (11:26 +0100)]
rtl8139: g_malloc() can't fail, bury dead error handling
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 4 Feb 2015 10:26:02 +0000 (11:26 +0100)]
onenand: g_malloc() can't fail, bury dead error handling
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Greg Kurz [Sat, 7 Feb 2015 10:25:14 +0000 (11:25 +0100)]
Fix name error in migration stream analyzation script
It fixes the following error:
Traceback (most recent call last):
File "./scripts/analyze-migration.py", line 584, in <module>
dump.read(dump_memory = args.memory)
File "./scripts/analyze-migration.py", line 528, in read
self.sections[section_id].read()
File "./scripts/analyze-migration.py", line 250, in read
self.file.readvar(n_valid * HASH_PTE_SIZE_64)
NameError: global name 'HASH_PTE_SIZE_64' is not defined
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Greg Kurz [Sat, 7 Feb 2015 10:25:50 +0000 (11:25 +0100)]
QJSON: fix typo in author's email address
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Tue, 27 Jan 2015 16:13:52 +0000 (17:13 +0100)]
util/uri: URI member path can be null, compare more carfully
uri_resolve_relative() calls strcmp(bas->path, ref->path). However,
either argument could be null! Evidence: the code checks for null
after the comparison. Spotted by Coverity.
I suspect this was screwed up when we stole the code from libxml2.
There the conditional reads
xmlStrEqual((xmlChar *)bas->path, (xmlChar *)ref->path)
with
int
xmlStrEqual(const xmlChar *str1, const xmlChar *str2) {
if (str1 == str2) return(1);
if (str1 == NULL) return(0);
if (str2 == NULL) return(0);
do {
if (*str1++ != *str2) return(0);
} while (*str2++);
return(1);
}
Fix by replicating libxml2's logic faithfully.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Tue, 27 Jan 2015 16:13:51 +0000 (17:13 +0100)]
util/uri: realloc2n() can't fail, drop dead error handling
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Tue, 27 Jan 2015 16:13:50 +0000 (17:13 +0100)]
util/uri: uri_new() can't fail, drop dead error handling
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 28 Jan 2015 14:54:04 +0000 (15:54 +0100)]
usb: Pair g_malloc() with g_free(), not free()
Spotted by Coverity with preview checker ALLOC_FREE_MISMATCH enabled
and my "coverity: Model g_free() isn't necessarily free()" model patch
applied.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 28 Jan 2015 14:54:03 +0000 (15:54 +0100)]
spapr_vio: Pair g_malloc() with g_free(), not free()
Spotted by Coverity with preview checker ALLOC_FREE_MISMATCH enabled
and my "coverity: Model g_free() isn't necessarily free()" model patch
applied.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 28 Jan 2015 14:54:02 +0000 (15:54 +0100)]
qemu-option: Pair g_malloc() with g_free(), not free()
Spotted by Coverity with preview checker ALLOC_FREE_MISMATCH enabled
and my "coverity: Model g_free() isn't necessarily free()" model patch
applied.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Wed, 28 Jan 2015 14:54:01 +0000 (15:54 +0100)]
qemu-option: Replace pointless use of g_malloc0() by g_malloc()
get_opt_value() takes a write-only buffer, so zeroing it is pointless.
We don't do it elsewhere, either.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Daniel P. Berrange [Tue, 3 Feb 2015 11:31:30 +0000 (11:31 +0000)]
libcacard: stop linking against every single 3rd party library
Building QEMU results in a libcacard.so that links against
practically the entire world
linux-vdso.so.1 => (0x00007fff71e99000)
libssl3.so => /usr/lib64/libssl3.so (0x00007f49f94b6000)
libsmime3.so => /usr/lib64/libsmime3.so (0x00007f49f928e000)
libnss3.so => /usr/lib64/libnss3.so (0x00007f49f8f67000)
libnssutil3.so => /usr/lib64/libnssutil3.so (0x00007f49f8d3b000)
libplds4.so => /usr/lib64/libplds4.so (0x00007f49f8b36000)
libplc4.so => /usr/lib64/libplc4.so (0x00007f49f8931000)
libnspr4.so => /usr/lib64/libnspr4.so (0x00007f49f86f2000)
libdl.so.2 => /usr/lib64/libdl.so.2 (0x00007f49f84ed000)
libm.so.6 => /usr/lib64/libm.so.6 (0x00007f49f81e5000)
libgthread-2.0.so.0 => /usr/lib64/libgthread-2.0.so.0 (0x00007f49f7fe3000)
librt.so.1 => /usr/lib64/librt.so.1 (0x00007f49f7dda000)
libz.so.1 => /usr/lib64/libz.so.1 (0x00007f49f7bc4000)
libcap-ng.so.0 => /usr/lib64/libcap-ng.so.0 (0x00007f49f79be000)
libuuid.so.1 => /usr/lib64/libuuid.so.1 (0x00007f49f77b8000)
libgnutls.so.28 => /usr/lib64/libgnutls.so.28 (0x00007f49f749a000)
libSDL-1.2.so.0 => /usr/lib64/libSDL-1.2.so.0 (0x00007f49f71fd000)
libpthread.so.0 => /usr/lib64/libpthread.so.0 (0x00007f49f6fe0000)
libvte.so.9 => /usr/lib64/libvte.so.9 (0x00007f49f6d3f000)
libXext.so.6 => /usr/lib64/libXext.so.6 (0x00007f49f6b2d000)
libgtk-x11-2.0.so.0 => /usr/lib64/libgtk-x11-2.0.so.0 (0x00007f49f64a0000)
libgdk-x11-2.0.so.0 => /usr/lib64/libgdk-x11-2.0.so.0 (0x00007f49f61de000)
libpangocairo-1.0.so.0 => /usr/lib64/libpangocairo-1.0.so.0 (0x00007f49f5fd1000)
libatk-1.0.so.0 => /usr/lib64/libatk-1.0.so.0 (0x00007f49f5daa000)
libcairo.so.2 => /usr/lib64/libcairo.so.2 (0x00007f49f5a9d000)
libgdk_pixbuf-2.0.so.0 => /usr/lib64/libgdk_pixbuf-2.0.so.0 (0x00007f49f5878000)
libgio-2.0.so.0 => /usr/lib64/libgio-2.0.so.0 (0x00007f49f5500000)
libpangoft2-1.0.so.0 => /usr/lib64/libpangoft2-1.0.so.0 (0x00007f49f52eb000)
libpango-1.0.so.0 => /usr/lib64/libpango-1.0.so.0 (0x00007f49f50a0000)
libgobject-2.0.so.0 => /usr/lib64/libgobject-2.0.so.0 (0x00007f49f4e4e000)
libglib-2.0.so.0 => /usr/lib64/libglib-2.0.so.0 (0x00007f49f4b15000)
libfontconfig.so.1 => /usr/lib64/libfontconfig.so.1 (0x00007f49f48d6000)
libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x00007f49f462b000)
libX11.so.6 => /usr/lib64/libX11.so.6 (0x00007f49f42e8000)
libxenstore.so.3.0 => /usr/lib64/libxenstore.so.3.0 (0x00007f49f40de000)
libxenctrl.so.4.4 => /usr/lib64/libxenctrl.so.4.4 (0x00007f49f3eb6000)
libxenguest.so.4.4 => /usr/lib64/libxenguest.so.4.4 (0x00007f49f3c8b000)
libseccomp.so.2 => /usr/lib64/libseccomp.so.2 (0x00007f49f3a74000)
librdmacm.so.1 => /usr/lib64/librdmacm.so.1 (0x00007f49f385d000)
libibverbs.so.1 => /usr/lib64/libibverbs.so.1 (0x00007f49f364a000)
libutil.so.1 => /usr/lib64/libutil.so.1 (0x00007f49f3447000)
libc.so.6 => /usr/lib64/libc.so.6 (0x00007f49f3089000)
/lib64/ld-linux-x86-64.so.2 (0x00007f49f9902000)
libp11-kit.so.0 => /usr/lib64/libp11-kit.so.0 (0x00007f49f2e23000)
libtspi.so.1 => /usr/lib64/libtspi.so.1 (0x00007f49f2bb2000)
libtasn1.so.6 => /usr/lib64/libtasn1.so.6 (0x00007f49f299f000)
libnettle.so.4 => /usr/lib64/libnettle.so.4 (0x00007f49f276d000)
libhogweed.so.2 => /usr/lib64/libhogweed.so.2 (0x00007f49f2545000)
libgmp.so.10 => /usr/lib64/libgmp.so.10 (0x00007f49f22cd000)
libncurses.so.5 => /usr/lib64/libncurses.so.5 (0x00007f49f20a5000)
libtinfo.so.5 => /usr/lib64/libtinfo.so.5 (0x00007f49f1e7a000)
libgmodule-2.0.so.0 => /usr/lib64/libgmodule-2.0.so.0 (0x00007f49f1c76000)
libXfixes.so.3 => /usr/lib64/libXfixes.so.3 (0x00007f49f1a6f000)
libXrender.so.1 => /usr/lib64/libXrender.so.1 (0x00007f49f1865000)
libXinerama.so.1 => /usr/lib64/libXinerama.so.1 (0x00007f49f1662000)
libXi.so.6 => /usr/lib64/libXi.so.6 (0x00007f49f1452000)
libXrandr.so.2 => /usr/lib64/libXrandr.so.2 (0x00007f49f1247000)
libXcursor.so.1 => /usr/lib64/libXcursor.so.1 (0x00007f49f103c000)
libXcomposite.so.1 => /usr/lib64/libXcomposite.so.1 (0x00007f49f0e39000)
libXdamage.so.1 => /usr/lib64/libXdamage.so.1 (0x00007f49f0c35000)
libharfbuzz.so.0 => /usr/lib64/libharfbuzz.so.0 (0x00007f49f09dd000)
libpixman-1.so.0 => /usr/lib64/libpixman-1.so.0 (0x00007f49f072f000)
libEGL.so.1 => /usr/lib64/libEGL.so.1 (0x00007f49f0505000)
libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x00007f49f02d2000)
libxcb-shm.so.0 => /usr/lib64/libxcb-shm.so.0 (0x00007f49f00cd000)
libxcb-render.so.0 => /usr/lib64/libxcb-render.so.0 (0x00007f49efec3000)
libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x00007f49efca1000)
libGL.so.1 => /usr/lib64/libGL.so.1 (0x00007f49efa06000)
libffi.so.6 => /usr/lib64/libffi.so.6 (0x00007f49ef7fe000)
libselinux.so.1 => /usr/lib64/libselinux.so.1 (0x00007f49ef5d8000)
libresolv.so.2 => /usr/lib64/libresolv.so.2 (0x00007f49ef3be000)
libexpat.so.1 => /usr/lib64/libexpat.so.1 (0x00007f49ef193000)
libbz2.so.1 => /usr/lib64/libbz2.so.1 (0x00007f49eef83000)
libgcc_s.so.1 => /usr/lib64/libgcc_s.so.1 (0x00007f49eed6c000)
liblzma.so.5 => /usr/lib64/liblzma.so.5 (0x00007f49eeb46000)
libnl-route-3.so.200 => /usr/lib64/libnl-route-3.so.200 (0x00007f49ee8e2000)
libnl-3.so.200 => /usr/lib64/libnl-3.so.200 (0x00007f49ee6c4000)
libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007f49ee2d6000)
libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007f49ee067000)
libgraphite2.so.3 => /usr/lib64/libgraphite2.so.3 (0x00007f49ede48000)
libX11-xcb.so.1 => /usr/lib64/libX11-xcb.so.1 (0x00007f49edc46000)
libxcb-dri2.so.0 => /usr/lib64/libxcb-dri2.so.0 (0x00007f49eda41000)
libxcb-xfixes.so.0 => /usr/lib64/libxcb-xfixes.so.0 (0x00007f49ed838000)
libxcb-shape.so.0 => /usr/lib64/libxcb-shape.so.0 (0x00007f49ed634000)
libgbm.so.1 => /usr/lib64/libgbm.so.1 (0x00007f49ed426000)
libwayland-client.so.0 => /usr/lib64/libwayland-client.so.0 (0x00007f49ed217000)
libwayland-server.so.0 => /usr/lib64/libwayland-server.so.0 (0x00007f49ed005000)
libglapi.so.0 => /usr/lib64/libglapi.so.0 (0x00007f49ecddb000)
libdrm.so.2 => /usr/lib64/libdrm.so.2 (0x00007f49ecbce000)
libXau.so.6 => /usr/lib64/libXau.so.6 (0x00007f49ec9ca000)
libxcb-glx.so.0 => /usr/lib64/libxcb-glx.so.0 (0x00007f49ec7b0000)
libxcb-dri3.so.0 => /usr/lib64/libxcb-dri3.so.0 (0x00007f49ec5ad000)
libxcb-present.so.0 => /usr/lib64/libxcb-present.so.0 (0x00007f49ec3aa000)
libxcb-randr.so.0 => /usr/lib64/libxcb-randr.so.0 (0x00007f49ec19b000)
libxcb-sync.so.1 => /usr/lib64/libxcb-sync.so.1 (0x00007f49ebf94000)
libxshmfence.so.1 => /usr/lib64/libxshmfence.so.1 (0x00007f49ebd91000)
libXxf86vm.so.1 => /usr/lib64/libXxf86vm.so.1 (0x00007f49ebb8a000)
libpcre.so.1 => /usr/lib64/libpcre.so.1 (0x00007f49eb91d000)
libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2 (0x00007f49eb6cf000)
libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x00007f49eb3ec000)
libcom_err.so.2 => /usr/lib64/libcom_err.so.2 (0x00007f49eb1e8000)
libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3 (0x00007f49eafb4000)
libkrb5support.so.0 => /usr/lib64/libkrb5support.so.0 (0x00007f49eada5000)
libkeyutils.so.1 => /usr/lib64/libkeyutils.so.1 (0x00007f49eaba0000)
All libcacard actually needs are the NSS libs. Linking against the entire
world is a regression caused by
commit
9d171bd9375e4d08feff9adda15163e0811f5f42
Author: Michael Tokarev <mjt@tls.msk.ru>
Date: Thu May 8 16:48:27 2014 +0400
libcacard: remove libcacard-specific CFLAGS and LIBS from global vars
Which removed the setting of the LIBS variable in libcacard/Makefile.
Adding it back as an empty assignment brings the linked libs back to a more
reasonable set
linux-vdso.so.1 => (0x00007fff575c1000)
libssl3.so => /usr/lib64/libssl3.so (0x00007f7f753b1000)
libsmime3.so => /usr/lib64/libsmime3.so (0x00007f7f75189000)
libnss3.so => /usr/lib64/libnss3.so (0x00007f7f74e62000)
libnssutil3.so => /usr/lib64/libnssutil3.so (0x00007f7f74c36000)
libplds4.so => /usr/lib64/libplds4.so (0x00007f7f74a31000)
libplc4.so => /usr/lib64/libplc4.so (0x00007f7f7482c000)
libnspr4.so => /usr/lib64/libnspr4.so (0x00007f7f745ed000)
libpthread.so.0 => /usr/lib64/libpthread.so.0 (0x00007f7f743d0000)
libdl.so.2 => /usr/lib64/libdl.so.2 (0x00007f7f741cc000)
libgthread-2.0.so.0 => /usr/lib64/libgthread-2.0.so.0 (0x00007f7f73fca000)
libglib-2.0.so.0 => /usr/lib64/libglib-2.0.so.0 (0x00007f7f73c90000)
libc.so.6 => /usr/lib64/libc.so.6 (0x00007f7f738d3000)
libz.so.1 => /usr/lib64/libz.so.1 (0x00007f7f736bd000)
librt.so.1 => /usr/lib64/librt.so.1 (0x00007f7f734b4000)
/lib64/ld-linux-x86-64.so.2 (0x00007f7f757fd000)
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Cc: <qemu-stable@nongnu.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Maxim Ostapenko [Mon, 2 Feb 2015 14:18:29 +0000 (18:18 +0400)]
linux-user: wrong TARGET_SI_PAD_SIZE value for some targets.
Fix TARGET_SI_PAD_SIZE calculation to match the way the kernel does it.
Use different TARGET_SI_PREAMBLE_SIZE for 32-bit and 64-bit targets.
Signed-off-by: Maxim Ostapenko <m.ostapenko@partner.samsung.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Kevin Wolf [Fri, 30 Jan 2015 19:37:55 +0000 (20:37 +0100)]
qemu-sockets: Fix buffer overflow in inet_parse()
The size of the stack allocated host[] array didn't account for the
terminating '\0' byte that sscanf() writes. Fix the array size.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Christian Borntraeger [Wed, 28 Jan 2015 15:07:17 +0000 (16:07 +0100)]
vl.c: fix memory leak spotted by valgrind
valgrind complains about:
==42062== 16 bytes in 1 blocks are definitely lost in loss record 387 of 1,048
==42062== at 0x402DCB2: malloc (vg_replace_malloc.c:299)
==42062== by 0x40C1BE3: g_malloc (in /usr/lib64/libglib-2.0.so.0.3800.2)
==42062== by 0x40DA133: g_slice_alloc (in /usr/lib64/libglib-2.0.so.0.3800.2)
==42062== by 0x40DB2E5: g_slist_prepend (in /usr/lib64/libglib-2.0.so.0.3800.2)
==42062== by 0x801637FF: object_class_get_list_tramp (object.c:690)
==42062== by 0x40A96C9: g_hash_table_foreach (in /usr/lib64/libglib-2.0.so.0.3800.2)
==42062== by 0x80164885: object_class_foreach (object.c:665)
==42062== by 0x80164975: object_class_get_list (object.c:698)
==42062== by 0x800100A5: machine_parse (vl.c:2447)
==42062== by 0x800100A5: main (vl.c:3756)
Lets free machines in case of mc.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Paolo Bonzini [Mon, 26 Jan 2015 11:12:26 +0000 (12:12 +0100)]
aes: remove a dead return statement
bits is checked to be 128, 192 or 256 at the beginning of the function.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Paolo Bonzini [Mon, 26 Jan 2015 11:12:24 +0000 (12:12 +0100)]
qemu-sockets: improve error reporting in unix_listen_opts
Coverity complains about not checking the returned value of mkstemp. While
at it, also improve error checking for snprintf, and refine error messages
in general.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Paolo Bonzini [Mon, 26 Jan 2015 11:12:22 +0000 (12:12 +0100)]
cpu-exec: simplify icount code
Use MIN instead of an "if" statement. Move "tb" assignment where
the value is actually used.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Paolo Bonzini [Mon, 26 Jan 2015 11:12:21 +0000 (12:12 +0100)]
cpu-exec: drop dead assignment
All uses of TB inside cpu_exec are dominated by "tb = tb_find_fast(env)",
and there are no uses after the switch statement. So the assignment
is dead, as reported by Coverity.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Thomas Huth [Tue, 27 Jan 2015 12:11:26 +0000 (13:11 +0100)]
qemu-log: Correct help text of 'log cpu_reset'
The logging of the CPU state during reset is done for all architectures
nowadays (see cpu_common_reset() in qom/cpu.c), so the "x86 only" text
does not apply here anymore.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Chen Gang S [Sun, 25 Jan 2015 00:00:42 +0000 (08:00 +0800)]
linux-user/syscall.c: do_ioctl_dm: Need to call unlock_user() before going to failure return in default case
In abi_long do_ioctl_dm(), after lock_user() call, the code does
not call unlock_user() before going to failure return in default case.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Chen Gang S [Sun, 25 Jan 2015 11:35:58 +0000 (19:35 +0800)]
linux-user/main.c: Use TARGET_SIG* instead of SIG*
In main.c, all SIG* should be TARGET_SIG*, since the relevant functions
(queue_signal() and gdb_handlesig()) expect TARGET_SIG*.
The corresponding vi command is "1,$ s/\<SIG/TARGET_SIG/g".
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Chen Gang S [Fri, 23 Jan 2015 10:07:50 +0000 (18:07 +0800)]
linux-user/syscall.c: Fix typo issue for using target_vec[i].iov_len instead of target_vec[i].iov_base
It is only a typo issue, need use tswapal(target_vec[i].iov_len) for the
len.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Chen Gang S [Fri, 23 Jan 2015 10:01:09 +0000 (18:01 +0800)]
linux-user/syscall.c: lock_iovec: unlock vec[i] in failure processing code block
When failure occurs during locking of vec[i], we also need to unlock all
already locked vec[i] in failure processing code block before return.
Code in unlock_user() checks vec[i].iov_base for NULL, so there's no
need not check it .
If error is EFAULT when "i == 0", vec[i].iov_base is NULL, we can just
skip it, so can still use "while (--i >= 0)" loop condition.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Gonglei [Thu, 13 Nov 2014 12:17:06 +0000 (20:17 +0800)]
virtfs-proxy-helper: Fix possible socket leak.
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Tue, 13 Jan 2015 13:19:13 +0000 (14:19 +0100)]
vl: Fix bogus error message for implied mon ID clashing
monitor_parse() desugars --monitor, --qmp and -qmp-pretty to --mon.
The ID it picks can clash with a user-specified ID. When it happens,
the error message is misleading.
Reproducer:
$ qemu --mon id=compat_monitor0 --monitor stdio
Message before the patch:
duplicate chardev: compat_monitor0
There's no "duplicate chardev" here. The problem is a duplicate
monitor ID. Moreover, the message provides no clue which option
caused the problem. The patch changes the message to:
qemu: --monitor stdio: Duplicate ID 'compat_monitor0' for mon
monitor_parse() is also used for creating a default monitor, but
that's not done when the user specifies a monitor, so an ID clash is
impossible then.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Don Koch [Fri, 16 Jan 2015 19:21:39 +0000 (14:21 -0500)]
Convert some debugging printfs to trace calls in pcnet.c.
Signed-off-by: Don Koch <dkoch@verizon.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Don Koch [Fri, 16 Jan 2015 19:21:38 +0000 (14:21 -0500)]
Add/convert trace calls in pcnet-pci.c.
Add trace calls. Convert some #ifdef DEBUG printfs to trace.
Signed-off-by: Don Koch <dkoch@verizon.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Don Koch [Fri, 16 Jan 2015 19:21:37 +0000 (14:21 -0500)]
Add trace to ps2.c.
Signed-off-by: Don Koch <dkoch@verizon.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Don Koch [Fri, 16 Jan 2015 19:21:36 +0000 (14:21 -0500)]
Add tracing to xenfb.
Signed-off-by: Don Koch <dkoch@verizon.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Gonglei [Mon, 19 Jan 2015 03:45:12 +0000 (11:45 +0800)]
fw_cfg: fix typos in comments: patch -> path
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Markus Armbruster [Tue, 20 Jan 2015 09:59:23 +0000 (10:59 +0100)]
target-mips: Clean up switch fall through after commit fecd264
Commit fecd264 added a number of fall-throughs, but neglected to
properly document them as intentional. Commit d922445 cleaned that up
for many, but not all cases. Take care of the remaining ones.
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Leon Yu [Mon, 2 Feb 2015 05:08:51 +0000 (05:08 +0000)]
qmp: unbreak build for non-vnc configuration
Signed-off-by: Leon Yu <chianglungyu@gmail.com>
Message-id:
1422853731-5282-1-git-send-email-chianglungyu@gmail.com
Fixes:
df887684603a ("monitor: add query-vnc-servers command")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 6 Feb 2015 18:06:07 +0000 (18:06 +0000)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block patches for 2.3
# gpg: Signature made Fri 06 Feb 2015 17:14:10 GMT using RSA key ID
C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream: (47 commits)
block/raw-posix.c: Fix raw_getlength() on Mac OS X block devices
block: Eliminate silly QERR_ macros used for encryption keys
block: New bdrv_add_key(), convert monitor to use it
blockdev: Eliminate silly QERR_BLOCK_JOB_NOT_ACTIVE macro
blockdev: Give find_block_job() an Error ** parameter
qcow2: Rewrite qcow2_alloc_bytes()
block: Give always priority to unused entries in the qcow2 L2 cache
nbd: fix max_discard/max_transfer_length
block: introduce BDRV_REQUEST_MAX_SECTORS
nbd: Improve error messages
iotests: Fix 104 for NBD
iotests: Fix 100 for nbd
iotests: Fix 083
block: fix off-by-one error in qcow and qcow2
qemu-iotests: add 116 invalid QED input file tests
qed: check for header size overflow
block/dmg: improve zeroes handling
block/dmg: support bzip2 block entry types
block/dmg: factor out block type check
block/dmg: use SectorNumber from BLKX header
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Programmingkid [Mon, 19 Jan 2015 22:12:55 +0000 (17:12 -0500)]
block/raw-posix.c: Fix raw_getlength() on Mac OS X block devices
This patch replaces the dummy code in raw_getlength() for block devices
on OS X, which always returned LLONG_MAX, with a real implementation
that returns the actual block device size.
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Fri, 6 Feb 2015 17:00:14 +0000 (18:00 +0100)]
Merge remote-tracking branch 'mreitz/block' into queue-block
* mreitz/block:
block: Eliminate silly QERR_ macros used for encryption keys
block: New bdrv_add_key(), convert monitor to use it
blockdev: Eliminate silly QERR_BLOCK_JOB_NOT_ACTIVE macro
blockdev: Give find_block_job() an Error ** parameter
Markus Armbruster [Thu, 29 Jan 2015 09:37:01 +0000 (10:37 +0100)]
block: Eliminate silly QERR_ macros used for encryption keys
The QERR_ macros are leftovers from the days of "rich" error objects.
They're used with error_set() and qerror_report(), and expand into the
first *two* arguments. This trickiness has become pointless. Clean
up QERR_DEVICE_ENCRYPTED and QERR_DEVICE_NOT_ENCRYPTED.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id:
1422524221-8566-5-git-send-email-armbru@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Markus Armbruster [Thu, 29 Jan 2015 09:37:00 +0000 (10:37 +0100)]
block: New bdrv_add_key(), convert monitor to use it
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id:
1422524221-8566-4-git-send-email-armbru@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Markus Armbruster [Thu, 29 Jan 2015 09:36:59 +0000 (10:36 +0100)]
blockdev: Eliminate silly QERR_BLOCK_JOB_NOT_ACTIVE macro
The QERR_ macros are leftovers from the days of "rich" error objects.
They're used with error_set() and qerror_report(), and expand into the
first *two* arguments. This trickiness has become pointless. Clean
this one up.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id:
1422524221-8566-3-git-send-email-armbru@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Markus Armbruster [Thu, 29 Jan 2015 09:36:58 +0000 (10:36 +0100)]
blockdev: Give find_block_job() an Error ** parameter
When find_block_job() fails, all its callers build the same Error
object. Build it in find_block_job() instead.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id:
1422524221-8566-2-git-send-email-armbru@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Max Reitz [Fri, 6 Feb 2015 14:39:16 +0000 (09:39 -0500)]
qcow2: Rewrite qcow2_alloc_bytes()
qcow2_alloc_bytes() is a function with insufficient error handling and
an unnecessary goto. This patch rewrites it.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Alberto Garcia [Thu, 5 Feb 2015 12:55:31 +0000 (14:55 +0200)]
block: Give always priority to unused entries in the qcow2 L2 cache
The current algorithm to replace entries from the L2 cache gives
priority to newer hits by dividing the hit count of all existing
entries by two everytime there is a cache miss.
However, if there are several cache misses the hit count of the
existing entries can easily go down to 0. This will result in those
entries being replaced even when there are others that have never been
used.
This problem is more noticeable with larger disk images and cache
sizes, since the chances of having several misses before the cache is
full are higher.
If we make sure that the hit count can never go down to 0 again,
unused entries will always have priority.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>