g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T).
Patch created mechanically with:
$ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
--macro-file scripts/cocci-macro-file.h FILES...
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20220315144156.1595462-4-armbru@redhat.com>
Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T).
Initial patch created mechanically with:
$ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
--macro-file scripts/cocci-macro-file.h FILES...
This uncovers a typing error:
../hw/9pfs/9p.c: In function ‘qid_path_fullmap’:
../hw/9pfs/9p.c:855:13: error: assignment to ‘QpfEntry *’ from incompatible pointer type ‘QppEntry *’ [-Werror=incompatible-pointer-types]
855 | val = g_new0(QppEntry, 1);
| ^
Harmless, because QppEntry is larger than QpfEntry. Manually fixed to
allocate a QpfEntry instead.
Cc: Greg Kurz <groug@kaod.org>
Cc: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20220315144156.1595462-3-armbru@redhat.com>
This is the semantic patch from commit b45c03f585 "arm: Use g_new() &
friends where that makes obvious sense".
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220315144156.1595462-2-armbru@redhat.com>
Building QEMU on Fedora 37 (Rawhide Prerelease) ppc64le failed with the
following error:
$ ../configure --prefix=/usr/local/qemu-disabletcg --target-list=ppc-softmmu,ppc64-softmmu --disable-tcg --disable-linux-user
...
$ make -j$(nproc)
...
In file included from /root/qemu/include/qapi/qmp/qdict.h:16,
from /root/qemu/include/block/qdict.h:13,
from ../qobject/block-qdict.c:11:
/root/qemu/include/qapi/qmp/qobject.h: In function ‘qdict_array_split’:
/root/qemu/include/qapi/qmp/qobject.h:49:17: error: ‘subqdict’ may be used uninitialized [-Werror=maybe-uninitialized]
49 | typeof(obj) _obj = (obj); \
| ^~~~
../qobject/block-qdict.c:227:16: note: ‘subqdict’ declared here
227 | QDict *subqdict;
| ^~~~~~~~
cc1: all warnings being treated as errors
Fix build failure by expanding the ternary operation.
Tested with `make check-unit` (the check-block-qdict test passed).
Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Hanna Reitz <hreitz@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220311221634.58288-1-muriloo@linux.ibm.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Include the qtest reproducer provided by Alexander Bulekov
in https://gitlab.com/qemu-project/qemu/-/issues/451. Without
the previous commit, we get:
$ make check-qtest-i386
...
Running test qtest-i386/fuzz-sdcard-test
==447470==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61500002a080 at pc 0x564c71766d48 bp 0x7ffc126c62b0 sp 0x7ffc126c62a8
READ of size 1 at 0x61500002a080 thread T0
#0 0x564c71766d47 in sdhci_read_dataport hw/sd/sdhci.c:474:18
#1 0x564c7175f139 in sdhci_read hw/sd/sdhci.c:1022:19
#2 0x564c721b937b in memory_region_read_accessor softmmu/memory.c:440:11
#3 0x564c72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#4 0x564c7216f47c in memory_region_dispatch_read1 softmmu/memory.c:1424:16
#5 0x564c7216ebb9 in memory_region_dispatch_read softmmu/memory.c:1452:9
#6 0x564c7212db5d in flatview_read_continue softmmu/physmem.c:2879:23
#7 0x564c7212f958 in flatview_read softmmu/physmem.c:2921:12
#8 0x564c7212f418 in address_space_read_full softmmu/physmem.c:2934:18
#9 0x564c721305a9 in address_space_rw softmmu/physmem.c:2962:16
#10 0x564c7175a392 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#11 0x564c7175a0ea in dma_memory_rw include/sysemu/dma.h:132:12
#12 0x564c71759684 in dma_memory_read include/sysemu/dma.h:152:12
#13 0x564c7175518c in sdhci_do_adma hw/sd/sdhci.c:823:27
#14 0x564c7174bf69 in sdhci_data_transfer hw/sd/sdhci.c:935:13
#15 0x564c7176aaa7 in sdhci_send_command hw/sd/sdhci.c:376:9
#16 0x564c717629ee in sdhci_write hw/sd/sdhci.c:1212:9
#17 0x564c72172513 in memory_region_write_accessor softmmu/memory.c:492:5
#18 0x564c72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#19 0x564c72170766 in memory_region_dispatch_write softmmu/memory.c:1504:16
#20 0x564c721419ee in flatview_write_continue softmmu/physmem.c:2812:23
#21 0x564c721301eb in flatview_write softmmu/physmem.c:2854:12
#22 0x564c7212fca8 in address_space_write softmmu/physmem.c:2950:18
#23 0x564c721d9a53 in qtest_process_command softmmu/qtest.c:727:9
0x61500002a080 is located 0 bytes to the right of 512-byte region [0x615000029e80,0x61500002a080)
allocated by thread T0 here:
#0 0x564c708e1737 in __interceptor_calloc (qemu-system-i386+0x1e6a737)
#1 0x7ff05567b5e0 in g_malloc0 (/lib64/libglib-2.0.so.0+0x5a5e0)
#2 0x564c71774adb in sdhci_pci_realize hw/sd/sdhci-pci.c:36:5
SUMMARY: AddressSanitizer: heap-buffer-overflow hw/sd/sdhci.c:474:18 in sdhci_read_dataport
Shadow bytes around the buggy address:
0x0c2a7fffd3c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffd3d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fffd3e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fffd3f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fffd400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c2a7fffd410:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffd420: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd430: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd440: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd450: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd460: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Heap left redzone: fa
Freed heap region: fd
==447470==ABORTING
Broken pipe
ERROR qtest-i386/fuzz-sdcard-test - too few tests run (expected 3, got 2)
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211215205656.488940-4-philmd@redhat.com>
[thuth: Replaced "-m 4G" with "-m 512M"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
* ISA v3.1 vector instruction fixes
* Compilation fix regarding 'struct pt_regs' definition
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Merge tag 'pull-ppc-20220321' of https://github.com/legoater/qemu into staging
ppc-7.0 queue :
* ISA v3.1 vector instruction fixes
* Compilation fix regarding 'struct pt_regs' definition
# gpg: Signature made Mon 21 Mar 2022 06:43:22 GMT
# gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B 0B60 51A3 43C7 CFFB ECA1
* tag 'pull-ppc-20220321' of https://github.com/legoater/qemu:
target/ppc: Replicate Double->Single-Precision result
target/ppc: Replicate double->int32 result for some vector insns
ppc64: Avoid pt_regs struct definition
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The issue reported by OSS-Fuzz produces the following backtrace:
==447470==ERROR: AddressSanitizer: heap-buffer-overflow
READ of size 1 at 0x61500002a080 thread T0
#0 0x71766d47 in sdhci_read_dataport hw/sd/sdhci.c:474:18
#1 0x7175f139 in sdhci_read hw/sd/sdhci.c:1022:19
#2 0x721b937b in memory_region_read_accessor softmmu/memory.c:440:11
#3 0x72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#4 0x7216f47c in memory_region_dispatch_read1 softmmu/memory.c:1424:16
#5 0x7216ebb9 in memory_region_dispatch_read softmmu/memory.c:1452:9
#6 0x7212db5d in flatview_read_continue softmmu/physmem.c:2879:23
#7 0x7212f958 in flatview_read softmmu/physmem.c:2921:12
#8 0x7212f418 in address_space_read_full softmmu/physmem.c:2934:18
#9 0x721305a9 in address_space_rw softmmu/physmem.c:2962:16
#10 0x7175a392 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#11 0x7175a0ea in dma_memory_rw include/sysemu/dma.h:132:12
#12 0x71759684 in dma_memory_read include/sysemu/dma.h:152:12
#13 0x7175518c in sdhci_do_adma hw/sd/sdhci.c:823:27
#14 0x7174bf69 in sdhci_data_transfer hw/sd/sdhci.c:935:13
#15 0x7176aaa7 in sdhci_send_command hw/sd/sdhci.c:376:9
#16 0x717629ee in sdhci_write hw/sd/sdhci.c:1212:9
#17 0x72172513 in memory_region_write_accessor softmmu/memory.c:492:5
#18 0x72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#19 0x72170766 in memory_region_dispatch_write softmmu/memory.c:1504:16
#20 0x721419ee in flatview_write_continue softmmu/physmem.c:2812:23
#21 0x721301eb in flatview_write softmmu/physmem.c:2854:12
#22 0x7212fca8 in address_space_write softmmu/physmem.c:2950:18
#23 0x721d9a53 in qtest_process_command softmmu/qtest.c:727:9
A DMA descriptor is previously filled in RAM. An I/O access to the
device (frames #22 to #16) start the DMA engine (frame #13). The
engine fetch the descriptor and execute the request, which itself
accesses the SDHCI I/O registers (frame #1 and #0), triggering a
re-entrancy issue.
Fix by prohibit transactions from the DMA to devices. The DMA engine
is thus restricted to memories.
Reported-by: OSS-Fuzz (Issue 36391)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/451
Message-Id: <20211215205656.488940-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
DMA transactions might fail. The DMA API returns a MemTxResult,
indicating such failures. Do not ignore it. On failure, raise
the ADMA error flag and eventually triggering an IRQ (see spec
chapter 1.13.5: "ADMA2 States").
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211215205656.488940-2-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Include the qtest reproducer provided by Alexander Bulekov
in https://gitlab.com/qemu-project/qemu/-/issues/542.
Without the previous commit, we get:
$ make check-qtest-i386
...
Running test tests/qtest/intel-hda-test
AddressSanitizer:DEADLYSIGNAL
=================================================================
==1580408==ERROR: AddressSanitizer: stack-overflow on address 0x7ffc3d566fe0
#0 0x63d297cf in address_space_translate_internal softmmu/physmem.c:356
#1 0x63d27260 in flatview_do_translate softmmu/physmem.c:499:15
#2 0x63d27af5 in flatview_translate softmmu/physmem.c:565:15
#3 0x63d4ce84 in flatview_write softmmu/physmem.c:2850:10
#4 0x63d4cb18 in address_space_write softmmu/physmem.c:2950:18
#5 0x63d4d387 in address_space_rw softmmu/physmem.c:2960:16
#6 0x62ae12f2 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#7 0x62ae104a in dma_memory_rw include/sysemu/dma.h:132:12
#8 0x62ae6157 in dma_memory_write include/sysemu/dma.h:173:12
#9 0x62ae5ec0 in stl_le_dma include/sysemu/dma.h:275:1
#10 0x62ae5ba2 in stl_le_pci_dma include/hw/pci/pci.h:871:1
#11 0x62ad59a6 in intel_hda_response hw/audio/intel-hda.c:372:12
#12 0x62ad2afb in hda_codec_response hw/audio/intel-hda.c:107:5
#13 0x62aec4e1 in hda_audio_command hw/audio/hda-codec.c:655:5
#14 0x62ae05d9 in intel_hda_send_command hw/audio/intel-hda.c:307:5
#15 0x62adff54 in intel_hda_corb_run hw/audio/intel-hda.c:342:9
#16 0x62adc13b in intel_hda_set_corb_wp hw/audio/intel-hda.c:548:5
#17 0x62ae5942 in intel_hda_reg_write hw/audio/intel-hda.c:977:9
#18 0x62ada10a in intel_hda_mmio_write hw/audio/intel-hda.c:1054:5
#19 0x63d8f383 in memory_region_write_accessor softmmu/memory.c:492:5
#20 0x63d8ecc1 in access_with_adjusted_size softmmu/memory.c:554:18
#21 0x63d8d5d6 in memory_region_dispatch_write softmmu/memory.c:1504:16
#22 0x63d5e85e in flatview_write_continue softmmu/physmem.c:2812:23
#23 0x63d4d05b in flatview_write softmmu/physmem.c:2854:12
#24 0x63d4cb18 in address_space_write softmmu/physmem.c:2950:18
#25 0x63d4d387 in address_space_rw softmmu/physmem.c:2960:16
#26 0x62ae12f2 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#27 0x62ae104a in dma_memory_rw include/sysemu/dma.h:132:12
#28 0x62ae6157 in dma_memory_write include/sysemu/dma.h:173:12
#29 0x62ae5ec0 in stl_le_dma include/sysemu/dma.h:275:1
#30 0x62ae5ba2 in stl_le_pci_dma include/hw/pci/pci.h:871:1
#31 0x62ad59a6 in intel_hda_response hw/audio/intel-hda.c:372:12
#32 0x62ad2afb in hda_codec_response hw/audio/intel-hda.c:107:5
#33 0x62aec4e1 in hda_audio_command hw/audio/hda-codec.c:655:5
#34 0x62ae05d9 in intel_hda_send_command hw/audio/intel-hda.c:307:5
#35 0x62adff54 in intel_hda_corb_run hw/audio/intel-hda.c:342:9
#36 0x62adc13b in intel_hda_set_corb_wp hw/audio/intel-hda.c:548:5
#37 0x62ae5942 in intel_hda_reg_write hw/audio/intel-hda.c:977:9
#38 0x62ada10a in intel_hda_mmio_write hw/audio/intel-hda.c:1054:5
#39 0x63d8f383 in memory_region_write_accessor softmmu/memory.c:492:5
#40 0x63d8ecc1 in access_with_adjusted_size softmmu/memory.c:554:18
#41 0x63d8d5d6 in memory_region_dispatch_write softmmu/memory.c:1504:16
#42 0x63d5e85e in flatview_write_continue softmmu/physmem.c:2812:23
#43 0x63d4d05b in flatview_write softmmu/physmem.c:2854:12
#44 0x63d4cb18 in address_space_write softmmu/physmem.c:2950:18
#45 0x63d4d387 in address_space_rw softmmu/physmem.c:2960:16
#46 0x62ae12f2 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#47 0x62ae104a in dma_memory_rw include/sysemu/dma.h:132:12
#48 0x62ae6157 in dma_memory_write include/sysemu/dma.h:173:12
...
SUMMARY: AddressSanitizer: stack-overflow softmmu/physmem.c:356 in address_space_translate_internal
==1580408==ABORTING
Broken pipe
Aborted (core dumped)
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211218160912.1591633-4-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Issue #542 reports a reentrancy problem when the DMA engine accesses
the HDA controller I/O registers. Fix by restricting the DMA engine
to memories regions (forbidding MMIO devices such the HDA controller).
Reported-by: OSS-Fuzz (Issue 28435)
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/542
CVE: CVE-2021-3611
Message-Id: <20211218160912.1591633-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Per the "High Definition Audio Specification" manual (rev. 1.0a),
section "3.3.30 Offset 5Dh: RIRBSTS - RIRB Status":
Response Overrun Interrupt Status (RIRBOIS):
Hardware sets this bit to a 1 when an overrun occurs in the RIRB.
An interrupt may be generated if the Response Overrun Interrupt
Control bit is set.
This bit will be set if the RIRB DMA engine is not able to write
the incoming responses to memory before additional incoming
responses overrun the internal FIFO.
When hardware detects an overrun, it will drop the responses which
overrun the buffer and set the RIRBOIS status bit to indicate the
error condition. Optionally, if the RIRBOIC is set, the hardware
will also generate an error to alert software to the problem.
QEMU emulates the DMA engine with the stl_le_pci_dma() calls. This
function returns a MemTxResult indicating whether the DMA access
was successful.
Handle any MemTxResult error as "DMA engine is not able to write the
incoming responses to memory" and raise the Overrun Interrupt flag
when this case occurs.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211218160912.1591633-2-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Add the 'memory' bit to the memory attributes to restrict bus
controller accesses to memories.
Introduce flatview_access_allowed() to check bus permission
before running any bus transaction.
Have read/write accessors return MEMTX_ACCESS_ERROR if an access is
restricted.
There is no change for the default case where 'memory' is not set.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211215182421.418374-4-philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[thuth: Replaced MEMTX_BUS_ERROR with MEMTX_ACCESS_ERROR, remove "inline"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Remove unuseful local 'result' variables.
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211215182421.418374-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Power ISA v3.1 formalizes the previously undefined result in
words 1 and 3 to be a copy of the result in words 0 and 2.
This affects: xvcvsxdsp, xvcvuxdsp, xvcvdpsp.
And the previously undefined result in word 1 to be a copy of
the result in word 0.
This affects: xscvdpsp.
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220316200427.3410437-1-lucas.coutinho@eldorado.org.br>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Power ISA v3.1 formalizes the previously undefined result in
words 1 and 3 to be a copy of the result in words 0 and 2.
This affects: xscvdpsxws, xscvdpuxws, xvcvdpsxws, xvcvdpuxws.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/852
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
[ clg: checkpatch fixes ]
Message-Id: <20220315053934.377519-1-richard.henderson@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Remove pt_regs indirection and instead reference gp_regs directly, this
makes it portable across musl/glibc
Use PT_* constants defined in asm/ptrace.h
Move the file to ppc64 subdir and leave ppc empty
Fixes
../qemu-6.2.0/linux-user/host/ppc64/../ppc/host-signal.h:16:32: error: incomplete definition of type 'struct pt_regs'
return uc->uc_mcontext.regs->nip;
~~~~~~~~~~~~~~~~~~~~^
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220315015740.847370-1-raj.khem@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
KVM support for AMX includes a new system attribute, KVM_X86_XCOMP_GUEST_SUPP.
Commit 19db68ca68 ("x86: Grant AMX permission for guest", 2022-03-15) however
did not fully consider the behavior on older kernels. First, it warns
too aggressively. Second, it invokes the KVM_GET_DEVICE_ATTR ioctl
unconditionally and then uses the "bitmask" variable, which remains
uninitialized if the ioctl fails. Third, kvm_ioctl returns -errno rather
than -1 on errors.
While at it, explain why the ioctl is needed and KVM_GET_SUPPORTED_CPUID
is not enough.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Fix sve2 ldnt1 and stnt1
* Fix pauth_check_trap vs SEL2
* Fix handling of LPAE block descriptors
* hw/dma/xlnx_csu_dma: Set TYPE_XLNX_CSU_DMA class_size
* hw/misc/npcm7xx_clk: Don't leak string in npcm7xx_clk_sel_init()
* nsis installer: List emulators in alphabetical order
* nsis installer: Suppress "ANSI targets are deprecated" warning
* nsis installer: Fix mouse-over descriptions for emulators
* hw/arm/virt: Fix gic-version=max when CONFIG_ARM_GICV3_TCG is unset
* Improve M-profile vector table access logging
* Xilinx ZynqMP: model CRF and APU control
* Fix compile issues on modern Solaris
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Merge tag 'pull-target-arm-20220318' of https://git.linaro.org/people/pmaydell/qemu-arm into staging
target-arm queue:
* Fix sve2 ldnt1 and stnt1
* Fix pauth_check_trap vs SEL2
* Fix handling of LPAE block descriptors
* hw/dma/xlnx_csu_dma: Set TYPE_XLNX_CSU_DMA class_size
* hw/misc/npcm7xx_clk: Don't leak string in npcm7xx_clk_sel_init()
* nsis installer: List emulators in alphabetical order
* nsis installer: Suppress "ANSI targets are deprecated" warning
* nsis installer: Fix mouse-over descriptions for emulators
* hw/arm/virt: Fix gic-version=max when CONFIG_ARM_GICV3_TCG is unset
* Improve M-profile vector table access logging
* Xilinx ZynqMP: model CRF and APU control
* Fix compile issues on modern Solaris
# gpg: Signature made Fri 18 Mar 2022 13:18:20 GMT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* tag 'pull-target-arm-20220318' of https://git.linaro.org/people/pmaydell/qemu-arm: (21 commits)
util/osdep: Remove some early cruft
hw/i386/acpi-build: Avoid 'sun' identifier
util/osdep: Avoid madvise proto on modern Solaris
hw/arm/xlnx-zynqmp: Connect the ZynqMP APU Control
hw/misc: Add a model of the Xilinx ZynqMP APU Control
hw/arm/xlnx-zynqmp: Connect the ZynqMP CRF
hw/misc: Add a model of the Xilinx ZynqMP CRF
target/arm: Make rvbar settable after realize
hw/arm/xlnx-zynqmp: Add an unimplemented SERDES area
target/arm: Log fault address for M-profile faults
target/arm: Log M-profile vector table accesses
hw/arm/virt: Fix gic-version=max when CONFIG_ARM_GICV3_TCG is unset
hw/intc: Rename CONFIG_ARM_GIC_TCG into CONFIG_ARM_GICV3_TCG
nsis installer: Fix mouse-over descriptions for emulators
nsis installer: Suppress "ANSI targets are deprecated" warning
nsis installer: List emulators in alphabetical order
hw/misc/npcm7xx_clk: Don't leak string in npcm7xx_clk_sel_init()
hw/dma/xlnx_csu_dma: Set TYPE_XLNX_CSU_DMA class_size
target/arm: Fix handling of LPAE block descriptors
target/arm: Fix pauth_check_trap vs SEL2
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
*opaque is an alias to *obj. Using the ladder makes the code consistent with
with other devices, e.g. accel/kvm/kvm-all and accel/tcg/tcg-all. It also
makes the cast more typesafe.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220301222301.103821-2-shentey@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The include for statvfs.h has not been needed since all statvfs calls
were removed in commit 4a1418e07b ("Unbreak large mem support by
removing kqemu").
The comment mentioning CONFIG_BSD hasn't made sense since an include
for config-host.h was removed in commit aafd758410 ("util: Clean up
includes").
Remove this cruft.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrew Deason <adeason@sinenomine.net>
Message-id: 20220316035227.3702-4-adeason@sinenomine.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On Solaris, 'sun' is #define'd to 1, which causes errors if a variable
is named 'sun'. Slightly change the name of the var for the Slot User
Number so we can build on Solaris.
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Signed-off-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20220316035227.3702-3-adeason@sinenomine.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On older Solaris releases (before Solaris 11), we didn't get a
prototype for madvise, and so util/osdep.c provides its own prototype.
Some time between the public Solaris 11.4 release and Solaris 11.4.42
CBE, we started getting an madvise prototype that looks like this:
extern int madvise(void *, size_t, int);
which conflicts with the prototype in util/osdeps.c. Instead of always
declaring this prototype, check if we're missing the madvise()
prototype, and only declare it ourselves if the prototype is missing.
Move the prototype to include/qemu/osdep.h, the normal place to handle
platform-specific header quirks.
The 'missing_madvise_proto' meson check contains an obviously wrong
prototype for madvise. So if that code compiles and links, we must be
missing the actual prototype for madvise.
Signed-off-by: Andrew Deason <adeason@sinenomine.net>
Message-id: 20220316035227.3702-2-adeason@sinenomine.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Connect the ZynqMP APU Control device.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20220316164645.2303510-7-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add a model of the Xilinx ZynqMP APU Control.
Reviewed-by: Luc Michel <luc@lmichel.fr>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20220316164645.2303510-6-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Connect the ZynqMP CRF - Clock Reset FPD device.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20220316164645.2303510-5-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add a model of the Xilinx ZynqMP CRF. At the moment this
is mostly a stub model.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20220316164645.2303510-4-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Make the rvbar property settable after realize. This is done
in preparation to model the ZynqMP's runtime configurable rvbar.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20220316164645.2303510-3-edgar.iglesias@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add an unimplemented SERDES (Serializer/Deserializer) area.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20220316164645.2303510-2-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For M-profile, the fault address is not always exposed to the guest
in a fault register (for instance the BFAR bus fault address register
is only updated for bus faults on data accesses, not instruction
accesses). Currently we log the address only if we're putting it
into a particular guest-visible register. Since we always have it,
log it generically, to make logs of i-side faults a bit clearer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20220315204306.2797684-3-peter.maydell@linaro.org
Currently the CPU_LOG_INT logging misses some useful information
about loads from the vector table. Add logging where we load vector
table entries. This is particularly helpful for cases where the user
has accidentally not put a vector table in their image at all, which
can result in confusing guest crashes at startup.
Here's an example of the new logging for a case where
the vector table contains garbage:
Loaded reset SP 0x0 PC 0x0 from vector table
Loaded reset SP 0xd008f8df PC 0xf000bf00 from vector table
Taking exception 3 [Prefetch Abort] on CPU 0
...with CFSR.IACCVIOL
...BusFault with BFSR.STKERR
...taking pending nonsecure exception 3
...loading from element 3 of non-secure vector table at 0xc
...loaded new PC 0x20000558
----------------
IN:
0x20000558: 08000079 stmdaeq r0, {r0, r3, r4, r5, r6}
(The double reset logging is the result of our long-standing
"CPUs all get reset twice" weirdness; it looks a bit ugly
but it'll go away if we ever fix that :-))
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20220315204306.2797684-2-peter.maydell@linaro.org
In TCG mode, if gic-version=max we always select GICv3 even if
CONFIG_ARM_GICV3_TCG is unset. We shall rather select GICv2.
This also brings the benefit of fixing qos tests errors for tests
using gic-version=max with CONFIG_ARM_GICV3_TCG unset.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 20220308182452.223473-3-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
CONFIG_ARM_GIC_TCG actually guards the compilation of TCG GICv3
specific files. So let's rename it into CONFIG_ARM_GICV3_TCG
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 20220308182452.223473-2-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We use the nsis.py script to write out an installer script Section
for each emulator executable, so the exact set of Sections depends on
which executables were built. However the part of qemu.nsi which
specifies mouse-over descriptions for each Section still has a
hard-coded and very outdated list (with just i386 and alpha). This
causes two problems. Firstly, if you build the installer for a
configuration where you didn't build the i386 binaries you get
warnings like this:
warning 6000: unknown variable/constant "{Section_i386}" detected, ignoring (macro:_==:1)
warning 6000: unknown variable/constant "{Section_i386w}" detected, ignoring (macro:_==:1)
(this happens in our gitlab CI jobs, for instance).
Secondly, most of the emulators in the generated installer don't have
any mouseover text.
Make nsis.py generate a second output file which has the necessary
MUI_DESCRIPTION_TEXT lines for each Section it creates, so we can
include that at the right point in qemu.nsi to set the mouse-over
text.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20220305105743.2384766-4-peter.maydell@linaro.org
When we build our Windows installer, it emits the warning:
warning 7998: ANSI targets are deprecated
Fix this by making our installer a Unicode installer instead. These
won't work on Win95/98/ME, but we already do not support those.
See
https://nsis.sourceforge.io/Docs/Chapter4.html#aunicodetarget
for the documentation of the Unicode directive.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Message-id: 20220305105743.2384766-3-peter.maydell@linaro.org
We currently list the emulators in the Windows installer's dialog
in an essentially random order (it's whatever glob.glob() returns
them to, which is filesystem-implementation-dependent). Add a
call to sorted() so they appear in alphabetical order.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20220305105743.2384766-2-peter.maydell@linaro.org
In npcm7xx_clk_sel_init() we allocate a string with g_strdup_printf().
Use g_autofree so we free it rather than leaking it.
(Detected with the clang leak sanitizer.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220308170302.2582820-1-peter.maydell@linaro.org
In commit 00f05c02f9 we gave the TYPE_XLNX_CSU_DMA object its
own class struct, but forgot to update the TypeInfo::class_size
accordingly. This meant that not enough memory was allocated for the
class struct, and the initialization of xcdc->read in the class init
function wrote off the end of the memory. Add the missing line.
Found by running 'check-qtest-aarch64' with a clang
address-sanitizer build, which complains:
==2542634==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61000000ab00 at pc 0x559a20aebc29 bp 0x7fff97df74d0 sp 0x7fff97df74c8
WRITE of size 8 at 0x61000000ab00 thread T0
#0 0x559a20aebc28 in xlnx_csu_dma_class_init /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../hw/dma/xlnx_csu_dma.c:722:16
#1 0x559a21bf297c in type_initialize /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../qom/object.c:365:9
#2 0x559a21bf3442 in object_class_foreach_tramp /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../qom/object.c:1070:5
#3 0x7f09bcb641b7 in g_hash_table_foreach (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x401b7)
#4 0x559a21bf3c27 in object_class_foreach /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../qom/object.c:1092:5
#5 0x559a21bf3c27 in object_class_get_list /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../qom/object.c:1149:5
#6 0x559a2081a2fd in select_machine /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../softmmu/vl.c:1661:24
#7 0x559a2081a2fd in qemu_create_machine /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../softmmu/vl.c:2146:35
#8 0x559a2081a2fd in qemu_init /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../softmmu/vl.c:3706:5
#9 0x559a20720ed5 in main /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../softmmu/main.c:49:5
#10 0x7f09baec00b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16
#11 0x559a2067673d in _start (/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/qemu-system-aarch64+0xf4b73d)
0x61000000ab00 is located 0 bytes to the right of 192-byte region [0x61000000aa40,0x61000000ab00)
allocated by thread T0 here:
#0 0x559a206eeff2 in calloc (/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/qemu-system-aarch64+0xfc3ff2)
#1 0x7f09bcb7bef0 in g_malloc0 (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x57ef0)
#2 0x559a21bf3442 in object_class_foreach_tramp /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/san/../../qom/object.c:1070:5
Fixes: 00f05c02f9 ("hw/dma/xlnx_csu_dma: Support starting a read transfer through a class method")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20220308150207.2546272-1-peter.maydell@linaro.org
LPAE descriptors come in three forms:
* table descriptors, giving the address of the next level page table
* page descriptors, which occur only at level 3 and describe the
mapping of one page (which might be 4K, 16K or 64K)
* block descriptors, which occur at higher page table levels, and
describe the mapping of huge pages
QEMU's page-table-walk code treats block and page entries
identically, simply ORing in a number of bits from the input virtual
address that depends on the level of the page table that we stopped
at; we depend on the previous masking of descaddr with descaddrmask
to have already cleared out the low bits of the descriptor word.
This is not quite right: the address field in a block descriptor is
smaller, and so there are bits which are valid address bits in a page
descriptor or a table descriptor but which are not supposed to be
part of the address in a block descriptor, and descaddrmask does not
clear them. We previously mostly got away with this because those
descriptor bits are RES0; however with FEAT_BBM (part of Armv8.4)
block descriptor bit 16 is defined to be the nT bit. No emulated
QEMU CPU has FEAT_BBM yet, but if the host CPU has it then we might
see it when using KVM or hvf.
Explicitly zero out all the descaddr bits we're about to OR vaddr
bits into.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/790
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220304165628.2345765-1-peter.maydell@linaro.org
When arm_is_el2_enabled was introduced, we missed
updating pauth_check_trap.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/788
Fixes: e6ef016926 ("target/arm: use arm_is_el2_enabled() where applicable")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220315021205.342768-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For both ldnt1 and stnt1, the meaning of the Rn and Rm are different
from ld1 and st1: the vector and integer registers are reversed, and
the integer register 31 refers to XZR instead of SP.
Secondly, the 64-bit version of ldnt1 was being interpreted as
32-bit unpacked unscaled offset instead of 64-bit unscaled offset,
which discarded the upper 32 bits of the address coming from
the vector argument.
Thirdly, validate that the memory element size is in range for the
vector element size for ldnt1. For ld1, we do this via independent
decode patterns, but for ldnt1 we need to do it manually.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/826
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20220308031655.240710-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
QEMU currently abort()s if the user tries to add a second ISA VGA
device, for example:
$ ./qemu-system-x86_64 -device isa-vga -device isa-vga
RAMBlock "vga.vram" already registered, abort!
Aborted (core dumped)
$ ./qemu-system-x86_64 -device isa-cirrus-vga -device isa-cirrus-vga
RAMBlock "vga.vram" already registered, abort!
Aborted (core dumped)
$ ./qemu-system-mips64el -M pica61 -device isa-vga
RAMBlock "vga.vram" already registered, abort!
Aborted (core dumped)
Such a crash should never happen just because of giving bad parameters
at the command line. Let's return a proper error message instead.
(The idea is based on an original patch by Jose R. Ziviani for the
isa-vga device, but this now fixes it for the isa-cirrus-vga device, too)
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/44
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220317083027.16688-4-thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The vga_common_init() function currently cannot report errors to its
caller. But in the following patch, we'd need this possibility, so
let's change it to take an "Error **" as parameter for this.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220317083027.16688-3-thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Most of the code in this function had been indented with 5 spaces instead
of 4. Since 4 is our preferred style, remove one space in the bad lines here.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220317083027.16688-2-thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The unused variables when FLOAT_MIXENG is defined caused warnings on
Apple clang version 13.1.6 (clang-1316.0.21.2).
Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220316061053.60587-1-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Check the dirty bits in advance to avoid unnecessary memory operations.
In the case that guest surface has different format than the server,
but it does not have dirty bits which means no refresh is actually needed,
the memory operations is not necessary.
Signed-off-by: Jianxian Wen <jianxian.wen@verisilicon.com>
Signed-off-by: Lu Gao <lu.gao@verisilicon.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <4C23C17B8E87E74E906A25A3254A03F4FA22100C@SHASXM06.verisilicon.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
GTK already produces corresponding GDK_BUTTON_PRESS events
alongside 2BUTTON and 3BUTTON_PRESS events. The 2BUTTON and
3BUTTON_PRESS events were incorrectly being interpreted and
passed to guests as button release events.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/558
Signed-off-by: K. Lange <klange@toaruos.org>
Message-Id: <20220305104521.3583703-1-klange@toaruos.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When ->poll() succeeds the AioHandler is placed on the ready list with
revents set to the magic value 0. This magic value causes
aio_dispatch_handler() to invoke ->poll_ready() instead of ->io_read()
for G_IO_IN or ->io_write() for G_IO_OUT.
This magic value 0 hack works for the IOThread where AioHandlers are
placed on ->ready_list and processed by aio_dispatch_ready_handlers().
It does not work for the main loop where all AioHandlers are processed
by aio_dispatch_handlers(), even those that are not ready and have a
revents value of 0.
As a result the main loop invokes ->poll_ready() on AioHandlers that are
not ready. These spurious ->poll_ready() calls waste CPU cycles and
could lead to crashes if the code assumes ->poll() must have succeeded
before ->poll_ready() is called (a reasonable asumption but I haven't
seen it in practice).
Stop using revents to track whether ->poll_ready() will be called on an
AioHandler. Introduce a separate AioHandler->poll_ready field instead.
This eliminates spurious ->poll_ready() calls in the main loop.
Fixes: 826cc32423 ("aio-posix: split poll check from ready handler")
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reported-by: Jason Wang <jasowang@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
Message-id: 20220223155703.136833-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
