Windows implementation of setjmp/longjmp is done in
C:/WINDOWS/system32/ucrtbase.dll. Alas, on arm64, it seems to *always*
perform stack unwinding, which crashes from generated code.
By using alternative implementation built in mingw, we avoid doing stack
unwinding and this fixes crash when calling longjmp.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230221153006.20300-3-pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Now the fuzzers will reboot the guest between inputs.
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Merge tag 'pr-2023-02-16' of https://gitlab.com/a1xndr/qemu into staging
Replace fork-based fuzzing with reboots.
Now the fuzzers will reboot the guest between inputs.
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# gpg: Signature made Fri 17 Feb 2023 04:04:10 GMT
# gpg: using RSA key FAD4E2BF871375D6340517C44E661DDE583A964E
# gpg: Good signature from "Alexander Bulekov <alxndr@bu.edu>" [unknown]
# 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: FAD4 E2BF 8713 75D6 3405 17C4 4E66 1DDE 583A 964E
* tag 'pr-2023-02-16' of https://gitlab.com/a1xndr/qemu:
docs/fuzz: remove mentions of fork-based fuzzing
fuzz: remove fork-fuzzing scaffolding
fuzz/i440fx: remove fork-based fuzzer
fuzz/virtio-blk: remove fork-based fuzzer
fuzz/virtio-net: remove fork-based fuzzer
fuzz/virtio-scsi: remove fork-based fuzzer
fuzz/generic-fuzz: add a limit on DMA bytes written
fuzz/generic-fuzz: use reboots instead of forks to reset state
fuzz: add fuzz_reset API
hw/sparse-mem: clear memory on reset
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Make use of pthread_set_name_np() to be able to set the threads name
on OpenBSD.
Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <Y57NrCmPTVSXLWC4@humpty.home.comstyle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fork-fuzzing provides a few pros, but our implementation prevents us
from using fuzzers other than libFuzzer, and may be causing issues such
as coverage-failure builds on OSS-Fuzz. It is not a great long-term
solution as it depends on internal implementation details of libFuzzer
(which is no longer in active development). Remove it in favor of other
methods of resetting state between inputs.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Remove all the virtiofsd build and docs infrastructure.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
As gprof relies on instrumentation you rarely get useful data compared
to a real optimised build. Lets deprecate the build option and
simplify the CI configuration as a result.
Buglink: https://gitlab.com/qemu-project/qemu/-/issues/1338
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230131094224.861621-1-alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Static QEMU build fails on Debian Bullseye:
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libdw.a(debuginfod-client.o): in function `__libdwfl_debuginfod_init':
(.text.startup+0x17): undefined reference to `dlopen'
The reason is that pkg-config does not suggest -ldl for libdw, and
adding --extra-ldflags="-ldl" resolves the issue. However, static
linking with libdw is an unclear topic:
* Linux perf does it.
* Debian's libdw-dev description says:
Only link to the static version for special cases and when you
don't need anything from the ebl backends.
* As the error message above indicates, -ldl is also needed for
debuginfod support.
The functionality provided by libdw is needed for analyzing performance
of JITed code, which is mostly useful to developers and researchers.
Therefore, in order to avoid unpleasant surprises for people who don't
need this, simply disable libdw for static builds by default. It can
still be enabled explicitly if needed.
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230210005208.438142-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Add the missing meson infrastructure bits for the new libdw
dependency. Model them after the existing capstone knobs.
Fixes: 7c10cb38cc ("accel/tcg: Add debuginfo support")
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230210005208.438142-1-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is the same with [PATCH v6 1/2], and provides avx512 support for xbzrle_encode_buffer
function to accelerate xbzrle encoding speed. Runtime check of avx512
support and benchmark for this feature are added. Compared with C
version of xbzrle_encode_buffer function, avx512 version can achieve
50%-70% performance improvement on benchmarking. In addition, if dirty
data is randomly located in 4K page, the avx512 version can achieve
almost 140% performance gain.
Signed-off-by: ling xu <ling1.xu@intel.com>
Co-authored-by: Zhou Zhao <zhou.zhao@intel.com>
Co-authored-by: Jun Jin <jun.i.jin@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This moves these commands from MAINTAINERS section "QMP" to new
section "Stats". Status is Orphan. Volunteers welcome!
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230124121946.1139465-23-armbru@redhat.com>
This reverts commit 3cd3df2a95.
glibc has fixed (in 2.36.9000-40-g774058d729) the problem
that caused a clash when both sys/mount.h annd linux/mount.h
are included, and backported this to the 2.36 stable release
too:
https://sourceware.org/glibc/wiki/Release/2.36#Usage_of_.3Clinux.2Fmount.h.3E_and_.3Csys.2Fmount.h.3E
It is saner for QEMU to remove the workaround it applied for
glibc 2.36 and expect distros to ship the 2.36 maint release
with the fix. This avoids needing to add a further workaround
to QEMU to deal with the fact that linux/brtfs.h now also pulls
in linux/mount.h via linux/fs.h since Linux 6.1
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230110174901.2580297-3-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
- update playbooks for custom runners
- add section timing support to gitlab
- upgrade fedora images to 37
- purge perl from the build system and deps
- disable unstable tests in CI
- improve intro, emulation and semihosting docs
- semihosting bug fix and O_BINARY default
- add memory-sve test
- fix some races in qht
- improve plugin handling of memory helpers
- optimise plugin hooks
- fix some plugin deadlocks
- reduce win64-cross build time by dropping some targets
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Merge tag 'pull-jan-omnibus-020223-1' of https://gitlab.com/stsquad/qemu into staging
Testing, docs, semihosting and plugin updates
- update playbooks for custom runners
- add section timing support to gitlab
- upgrade fedora images to 37
- purge perl from the build system and deps
- disable unstable tests in CI
- improve intro, emulation and semihosting docs
- semihosting bug fix and O_BINARY default
- add memory-sve test
- fix some races in qht
- improve plugin handling of memory helpers
- optimise plugin hooks
- fix some plugin deadlocks
- reduce win64-cross build time by dropping some targets
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# gpg: Signature made Thu 02 Feb 2023 15:59:52 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* tag 'pull-jan-omnibus-020223-1' of https://gitlab.com/stsquad/qemu: (36 commits)
gitlab: cut even more from cross-win64-system build
plugins: Iterate on cb_lists in qemu_plugin_user_exit
cpu-exec: assert that plugin_mem_cbs is NULL after execution
tcg: exclude non-memory effecting helpers from instrumentation
translator: always pair plugin_gen_insn_{start, end} calls
plugins: fix optimization in plugin_gen_disable_mem_helpers
plugins: make qemu_plugin_user_exit's locking order consistent with fork_start's
util/qht: use striped locks under TSAN
thread: de-const qemu_spin_destroy
util/qht: add missing atomic_set(hashes[i])
cpu: free cpu->tb_jmp_cache with RCU
tests/tcg: add memory-sve test for aarch64
semihosting: add O_BINARY flag in host_open for NT compatibility
semihosting: Write back semihosting data before completion callback
docs: add an introduction to the system docs
semihosting: add semihosting section to the docs
docs: add a new section to outline emulation support
docs: add hotlinks to about preface text
MAINTAINERS: Fix the entry for tests/tcg/nios2
gitlab: wrap up test results for custom runners
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On msys2, the shader-to-C script produces bad C:
./ui/shader/texture-blit-vert.h:2:5: error: missing terminating " character [-Werror]
Fix it by changing the line ending from crlf to lf, and convert the
script to Python (qemu build seems perl-free after that).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230110132700.833690-2-marcandre.lureau@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230124180127.1881110-6-alex.bennee@linaro.org>
Since commit efc6c070ac ("configure: Add a test for the minimum
compiler version") the minimum compiler version required for GCC
is 4.8, which supports __builtin_bswap().
Remove the NetBSD specific ifdef'ry.
This reverts commit 1360677cfe
("makes NetBSD use the native bswap functions").
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230111163147.71761-7-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Since commit efc6c070ac ("configure: Add a test for the minimum
compiler version") the minimum compiler version required for GCC
is 4.8, which supports __builtin_bswap().
Drop the <byteswap.h> dependency.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230111163147.71761-4-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Version 0.14.0 is now old enough to have made it into the major
distributions:
Debian 11: 0.14.3
RHEL-8: 0.14.3
FreeBSD (ports): 0.15.0
Fedora 35: 0.15.0
Ubuntu 20.04: 0.14.2
OpenSUSE Leap 15.3: 0.14.3
Requiring it lets us drop a number of version checks. The next commit
will clean up some more.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230109190321.1056914-6-armbru@redhat.com>
Version 0.14.0 is now old enough to have made it into the major
distributions:
Debian 11: 0.14.3
RHEL-8: 0.14.2
FreeBSD (ports): 0.14.4
Fedora 35: 0.14.0
Ubuntu 20.04: 0.14.0
OpenSUSE Leap 15.3: 0.14.3
Requiring it lets us drop two version checks in ui/vdagent.c. It also
enables the next commit.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230109190321.1056914-4-armbru@redhat.com>
Use the attribute, which is supported by clang, instead of
the #pragma, which is not supported and, for some reason,
also not detected by the meson probe, so we fail by -Werror.
Include only <immintrin.h> as that is the outermost "official"
header for these intrinsics -- emmintrin.h and smmintrin -- are
older SSE2 and SSE4 specific headers, while the immintrin.h
includes all of the Intel intrinsics.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Add libdw-based functions for loading and querying debuginfo. Load
debuginfo from the system and the linux-user loaders.
This is useful for the upcoming perf support, which can then put
human-readable guest symbols instead of raw guest PCs into perfmap and
jitdump files.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230112152013.125680-3-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Since the nanomips disassembler is not C++ code anymore, it need not
depend on link_language == cpp. Always include it and remove the
CONFIG_NANOMIPS_DIS symbol.
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230110084942.299460-1-pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
* Always send errors to logfile when daemonized (Greg)
* Add support for IDE CompactFlash card (Lubomir)
* First round of build system cleanups (myself)
* First round of feature removals (myself)
* Reduce "qemu/accel.h" inclusion (Philippe)
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* Atomic memslot updates for KVM (Emanuele, David)
* Always send errors to logfile when daemonized (Greg)
* Add support for IDE CompactFlash card (Lubomir)
* First round of build system cleanups (myself)
* First round of feature removals (myself)
* Reduce "qemu/accel.h" inclusion (Philippe)
# gpg: Signature made Thu 05 Jan 2023 23:51:09 GMT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (24 commits)
i386: SGX: remove deprecated member of SGXInfo
target/i386: Add SGX aex-notify and EDECCSSA support
util: remove support -chardev tty and -chardev parport
util: remove support for hex numbers with a scaling suffix
KVM: remove support for kernel-irqchip=off
docs: do not talk about past removal as happening in the future
meson: accept relative symlinks in "meson introspect --installed" data
meson: cleanup compiler detection
meson: support meson 0.64 -Doptimization=plain
configure: test all warnings
tests/qapi-schema: remove Meson workaround
meson: cleanup dummy-cpus.c rules
meson: tweak hardening options for Windows
configure: remove backwards-compatibility and obsolete options
configure: preserve qemu-ga variables
configure: cleanup $cpu tests
configure: remove dead function
configure: remove useless write_c_skeleton
ide: Add "ide-cf" driver, a CompactFlash card
ide: Add 8-bit data mode
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add tcg backend paired register allocation.
Cleanup tcg backend function call abi.
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Merge tag 'pull-tcg-20230105' of https://gitlab.com/rth7680/qemu into staging
Fix race conditions in new user-only vma tracking.
Add tcg backend paired register allocation.
Cleanup tcg backend function call abi.
# gpg: Signature made Fri 06 Jan 2023 03:12:17 GMT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* tag 'pull-tcg-20230105' of https://gitlab.com/rth7680/qemu: (47 commits)
tests/tcg/multiarch: add vma-pthread.c
accel/tcg: Handle false negative lookup in page_check_range
accel/tcg: Use g_free_rcu for user-exec interval trees
accel/tcg: Fix tb_invalidate_phys_page_unwind
tcg: Add TCGHelperInfo argument to tcg_out_call
tcg/aarch64: Merge tcg_out_callr into tcg_out_call
tcg: Move ffi_cif pointer into TCGHelperInfo
tcg: Factor init_ffi_layouts() out of tcg_context_init()
tcg: Convert typecode_to_ffi from array to function
tcg: Reorg function calls
tcg: Use output_pref wrapper function
tcg: Vary the allocation size for TCGOp
tcg: Pass number of arguments to tcg_emit_op() / tcg_op_insert_*()
accel/tcg/plugin: Use copy_op in append_{udata,mem}_cb
accel/tcg/plugin: Avoid duplicate copy in copy_call
accel/tcg/plugin: Don't search for the function pointer index
tcg: Use TCG_CALL_ARG_EVEN for TCI special case
tcg: Replace TCG_TARGET_EXTEND_ARGS with TCG_TARGET_CALL_ARG_I32
tcg: Replace TCG_TARGET_CALL_ALIGN_ARGS with TCG_TARGET_CALL_ARG_I64
tcg: Introduce TCGCallReturnKind and TCGCallArgumentKind
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Detect all compilers at the beginning of meson.build, and store
the available languages in an array.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In Meson 0.64, the optimization built-in option now accepts the "plain" value,
which will not set any optimization flags. While QEMU does not check the
contents of the option and therefore does not suffer any ill effect
from the new value, it uses get_option to print the optimization flags
in the summary. Clean the code up to remove duplication, and check for
-Doptimization=plain at the same time.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
meson.build has been enabling ASLR _only_ for debug builds since
commit d2147e04f9 ("configure: move Windows flags detection to meson",
2022-05-07); instead it was supposed to disable it for debug builds.
However, the flag has been enabled for DLLs upstream for roughly 2
years (https://sourceware.org/bugzilla/show_bug.cgi?id=19011), and
also by some distros including Debian for 6 years even
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=836365).
Enable it unconditionally; we can fix the reversed logic of commit
d2147e04f9 later if there are any reports, but for now just
enable the hardening.
Also add -Wl,--high-entropy-va, which also controls ASLR.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Like CONFIG_TCG, the enabled method of execution is a host property
not a guest property. This exposes the define to compile-once files.
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
If a memory-backend is configured with mode
HOST_MEM_POLICY_PREFERRED then
host_memory_backend_memory_complete() calls mbind() as:
mbind(..., MPOL_PREFERRED, nodemask, ...);
Here, 'nodemask' is a bitmap of host NUMA nodes and corresponds
to the .host-nodes attribute. Therefore, there can be multiple
nodes specified. However, the documentation to MPOL_PREFERRED
says:
MPOL_PREFERRED
This mode sets the preferred node for allocation. ...
If nodemask specifies more than one node ID, the first node
in the mask will be selected as the preferred node.
Therefore, only the first node is honored and the rest is
silently ignored. Well, with recent changes to the kernel and
numactl we can do better.
The Linux kernel added in v5.15 via commit cfcaa66f8032
("mm/hugetlb: add support for mempolicy MPOL_PREFERRED_MANY")
support for MPOL_PREFERRED_MANY, which accepts multiple preferred
NUMA nodes instead.
Then, numa_has_preferred_many() API was introduced to numactl
(v2.0.15~26) allowing applications to query kernel support.
Wiring this all together, we can pass MPOL_PREFERRED_MANY to the
mbind() call instead and stop ignoring multiple nodes, silently.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Message-Id: <a0b4adce1af5bd2344c2218eb4a04b3ff7bcfdb4.1671097918.git.mprivozn@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
qga: Add initial OpenBSD and NetBSD support
Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
The GTK Clipboard implementation may cause guest hangs.
Therefore implement new configure switch: --enable-gtk-clipboard,
as a meson option disabled by default, which warns in the help
text about the experimental nature of the feature.
Regenerate the meson build options to include it.
The initialization of the clipboard is gtk.c, as well as the
compilation of gtk-clipboard.c are now conditional on this new
option to be set.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1150
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Message-Id: <20221121135538.14625-1-cfontana@suse.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
meson.build has one test where "main" is declared unnecessarily
with argc and argv arguments, but does not use them. Because
the test needs -Werror too, HAVE_BROKEN_SIZE_MAX is defined
incorrectly.
Fix the test and, for consistency, remove argc and argv whenever
they are not needed.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Emphasize that we only support full 64-bit code generation.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
At present packaging the required DLLs of QEMU executables is a
manual process, and error prone.
Actually build/config-host.mak contains a GLIB_BINDIR variable
which is the directory where glib and other DLLs reside. This
works for both Windows native build and cross-build on Linux.
We can use it as the search directory for DLLs and automate
the whole DLL packaging process.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20220908132817.1831008-4-bmeng.cn@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This patch adds support for asynchronously tearing down a VM on Linux.
When qemu terminates, either naturally or because of a fatal signal,
the VM is torn down. If the VM is huge, it can take a considerable
amount of time for it to be cleaned up. In case of a protected VM, it
might take even longer than a non-protected VM (this is the case on
s390x, for example).
Some users might want to shut down a VM and restart it immediately,
without having to wait. This is especially true if management
infrastructure like libvirt is used.
This patch implements a simple trick on Linux to allow qemu to return
immediately, with the teardown of the VM being performed
asynchronously.
If the new commandline option -async-teardown is used, a new process is
spawned from qemu at startup, using the clone syscall, in such way that
it will share its address space with qemu.The new process will have the
name "cleanup/<QEMU_PID>". It will wait until qemu terminates
completely, and then it will exit itself.
This allows qemu to terminate quickly, without having to wait for the
whole address space to be torn down. The cleanup process will exit
after qemu, so it will be the last user of the address space, and
therefore it will take care of the actual teardown. The cleanup
process will share the same cgroups as qemu, so both memory usage and
cpu time will be accounted properly.
If possible, close_range will be used in the cleanup process to close
all open file descriptors. If it is not available or if it fails, /proc
will be used to determine which file descriptors to close.
If the cleanup process is forcefully killed with SIGKILL before the
main qemu process has terminated completely, the mechanism is defeated
and the teardown will not be asynchronous.
This feature can already be used with libvirt by adding the following
to the XML domain definition to pass the parameter to qemu directly:
<commandline xmlns="http://libvirt.org/schemas/domain/qemu/1.0">
<arg value='-async-teardown'/>
</commandline>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com>
Tested-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com>
Message-Id: <20220812133453.82671-1-imbrenda@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Many LUKS header robustness checks
* Fix TLS PSK error reporting
* Enable LUKS creation on macOS
* Report useful errnos from seccomp
* I/O chanel Windows portability fix
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Merge tag 'misc-next-pull-request' of https://gitlab.com/berrange/qemu into staging
pull: crypto and io queue
* Many LUKS header robustness checks
* Fix TLS PSK error reporting
* Enable LUKS creation on macOS
* Report useful errnos from seccomp
* I/O chanel Windows portability fix
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# gpg: Signature made Thu 27 Oct 2022 13:29:43 EDT
# gpg: using RSA key DAF3A6FDB26B62912D0E8E3FBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>" [full]
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>" [full]
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E 8E3F BE86 EBB4 1510 4FDF
* tag 'misc-next-pull-request' of https://gitlab.com/berrange/qemu:
crypto: add test cases for many malformed LUKS header scenarios
crypto: ensure LUKS tests run with GNUTLS crypto provider
crypto: quote algorithm names in error messages
crypto: split off helpers for converting LUKS header endianess
crypto: split LUKS header definitions off into file
crypto: check that LUKS PBKDF2 iterations count is non-zero
crypto: strengthen the check for key slots overlapping with LUKS header
crypto: validate that LUKS payload doesn't overlap with header
crypto: enforce that key material doesn't overlap with LUKS header
crypto: enforce that LUKS stripes is always a fixed value
crypto: sanity check that LUKS header strings are NUL-terminated
tests: avoid DOS line endings in PSK file
crypto: check for and report errors setting PSK credentials
scripts: check if .git exists before checking submodule status
seccomp: Get actual errno value from failed seccomp functions
io/channel-watch: Fix socket watch on Windows
io/channel-watch: Drop the unnecessary cast
io/channel-watch: Drop a superfluous '#ifdef WIN32'
util/qemu-sockets: Use g_get_tmp_dir() to get the directory for temporary files
crypto/luks: Support creating LUKS image on Darwin
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1193
The commit "Use io_uring_register_ring_fd() to skip fd operations" broke
when booting a guest with iothread and io_uring. That is because the
io_uring_register_ring_fd() call is made from the main thread instead of
IOThread where io_uring_submit() is called. It can not be guaranteed
to register the ring fd in the correct thread or unregister the same ring
fd if the IOThread is disabled. This optimization is not critical so we
will revert previous commit.
This reverts commit e2848bc574
and 77e3f038af.
Cc: qemu-stable@nongnu.org
Signed-off-by: Sam Li <faithilikerun@gmail.com>
Message-Id: <20220924144815.5591-1-faithilikerun@gmail.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Tested-by: Dario Faggioli <dfaggioli@suse.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Usually, we let upper layers handle CPU pinning, because
pthread_setaffinity_np() (-> sched_setaffinity()) is blocked via
seccomp when starting QEMU with
-sandbox enable=on,resourcecontrol=deny
However, we want to configure and observe the CPU affinity of threads
from QEMU directly in some cases when the sandbox option is either not
enabled or not active yet.
So let's add a way to configure CPU pinning via
qemu_thread_set_affinity() and obtain CPU affinity via
qemu_thread_get_affinity() and implement them under POSIX using
pthread_setaffinity_np() + pthread_getaffinity_np().
Implementation under Windows is possible using SetProcessAffinityMask()
+ GetProcessAffinityMask(), however, that is left as future work.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Message-Id: <20221014134720.168738-3-david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
libblkio (https://gitlab.com/libblkio/libblkio/) is a library for
high-performance disk I/O. It currently supports io_uring,
virtio-blk-vhost-user, and virtio-blk-vhost-vdpa with additional drivers
under development.
One of the reasons for developing libblkio is that other applications
besides QEMU can use it. This will be particularly useful for
virtio-blk-vhost-user which applications may wish to use for connecting
to qemu-storage-daemon.
libblkio also gives us an opportunity to develop in Rust behind a C API
that is easy to consume from QEMU.
This commit adds io_uring, nvme-io_uring, virtio-blk-vhost-user, and
virtio-blk-vhost-vdpa BlockDrivers to QEMU using libblkio. It will be
easy to add other libblkio drivers since they will share the majority of
code.
For now I/O buffers are copied through bounce buffers if the libblkio
driver requires it. Later commits add an optimization for
pre-registering guest RAM to avoid bounce buffers.
The syntax is:
--blockdev io_uring,node-name=drive0,filename=test.img,readonly=on|off,cache.direct=on|off
--blockdev nvme-io_uring,node-name=drive0,filename=/dev/ng0n1,readonly=on|off,cache.direct=on
--blockdev virtio-blk-vhost-vdpa,node-name=drive0,path=/dev/vdpa...,readonly=on|off,cache.direct=on
--blockdev virtio-blk-vhost-user,node-name=drive0,path=vhost-user-blk.sock,readonly=on|off,cache.direct=on
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20221013185908.1297568-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Upon failure, a libseccomp API returns actual errno value very
rarely. Fortunately, after its commit 34bf78ab (contained in
2.5.0 release), the SCMP_FLTATR_API_SYSRAWRC attribute can be set
which makes subsequent APIs return true errno on failure.
This is especially critical when seccomp_load() fails, because
generic -ECANCELED says nothing.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This is in preparation of future refactoring as well as cleaning up
the source tree. Aside from the minor tweaks to meson and trace.h this
is pure code motion.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220929114231.583801-43-alex.bennee@linaro.org>
Remove the symlink to tests/tcg/config-*.mak, which is possible now
that unused target config files are not created either.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220929114231.583801-28-alex.bennee@linaro.org>
