* i386 fixes
* mtest2make cleanups to enable per-speed dependencies
* record/replay tracepoints
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# gpg: Signature made Wed 19 Nov 2025 09:24:58 AM CET
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [unknown]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# 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:
replay: add tracing events
mtest2make: do not repeat the same speed over and over
mtest2make: add dependencies to the "speed-qualified" suite
mtest2make: cleanup mtest-suites variables
target/i386: fix stack size when delivering real mode interrupts
target/i386: svm: fix sign extension of exit code
target/i386/tcg: validate segment registers
target/i386: Mark VPERMILPS as not valid with prefix 0
target/i386: emulate: Make sure fetch_instruction exist before calling it
ioapic: fix typo in irqfd check
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The replay subsystem does not provide any way to see what's going on
and how the replay events interleave with other things happening in QEMU.
Add trace events to improve debuggability; to avoid having too many
events reimplement all functions in terms of (non-traced) replay_getc
and replay_putc and add a single trace event for each datum that is
extracted or written.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit 44ce1b5d2f ("migration/rdma: define htonll/ntohll
only if not predefined") tried to only include htonll/ntohll
replacements when their symbol is *defined*, but this doesn't
work, as they aren't:
../migration/rdma.c:242:17: error: static declaration of 'htonll' follows non-static declaration
242 | static uint64_t htonll(uint64_t v)
| ^~~~~~
In file included from /usr/include/netinet/in.h:73,
from /usr/include/sys/socket.h:32,
from /home/f4bug/qemu/include/system/os-posix.h:30,
from /home/f4bug/qemu/include/qemu/osdep.h:176,
from ../migration/rdma.c:17:
/usr/include/sys/byteorder.h:75:18: note: previous declaration of 'htonll' with type 'uint64_t(uint64_t)' {aka 'long unsigned int(long unsigned int)'}
75 | extern uint64_t htonll(uint64_t);
| ^~~~~~
../migration/rdma.c:252:17: error: static declaration of 'ntohll' follows non-static declaration
252 | static uint64_t ntohll(uint64_t v)
| ^~~~~~
/usr/include/sys/byteorder.h:76:18: note: previous declaration of 'ntohll' with type 'uint64_t(uint64_t)' {aka 'long unsigned int(long unsigned int)'}
76 | extern uint64_t ntohll(uint64_t);
| ^~~~~~
Better to check the symbol availability with meson.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20251117203834.83713-3-philmd@linaro.org>
AioContext's glib integration only supports ppoll(2) file descriptor
monitoring. epoll(7) and io_uring(7) disable themselves and switch back
to ppoll(2) when the glib event loop is used. The main loop thread
cannot use epoll(7) or io_uring(7) because it always uses the glib event
loop.
Future QEMU features may require io_uring(7). One example is uring_cmd
support in FUSE exports. Each feature could create its own io_uring(7)
context and integrate it into the event loop, but this is inefficient
due to extra syscalls. It would be more efficient to reuse the
AioContext's existing fdmon-io_uring.c io_uring(7) context because
fdmon-io_uring.c will already be active on systems where Linux io_uring
is available.
In order to keep fdmon-io_uring.c's AioContext operational even when the
glib event loop is used, extend FDMonOps with an API similar to
GSourceFuncs so that file descriptor monitoring can integrate into the
glib event loop.
A quick summary of the GSourceFuncs API:
- prepare() is called each event loop iteration before waiting for file
descriptors and timers.
- check() is called to determine whether events are ready to be
dispatched after waiting.
- dispatch() is called to process events.
More details here: https://docs.gtk.org/glib/struct.SourceFuncs.html
Move the ppoll(2)-specific code from aio-posix.c into fdmon-poll.c and
also implement epoll(7)- and io_uring(7)-specific file descriptor
monitoring code for glib event loops.
Note that it's still faster to use aio_poll() rather than the glib event
loop since glib waits for file descriptor activity with ppoll(2) and
does not support adaptive polling. But at least epoll(7) and io_uring(7)
now work in glib event loops.
Splitting this into multiple commits without temporarily breaking
AioContext proved difficult so this commit makes all the changes. The
next commit will remove the aio_context_use_g_source() API because it is
no longer needed.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <20251104022933.618123-7-stefanha@redhat.com>
[kwolf: Build fixes; fix AioContext.list_lock use after destroy]
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
QAPI patches for 2025-11-04
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# gpg: Signature made Tue 04 Nov 2025 01:56:09 PM CET
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [unknown]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653
* tag 'pull-qapi-2025-11-04' of https://repo.or.cz/qemu/armbru:
qapi: Add documentation format validation
docs/interop: Add test to keep vhost-user.json sane
docs/interop/firmware: Literal block markup
docs/interop/vhost-user: Belatedly convert "Example" section
docs/interop: Refill QAPI doc comments to conform to conventions
qga/qapi-schema: Clean up whitespace between definitions
qga/qapi-schema: Refill doc comments to conform to conventions
qapi: Clean up whitespace between definitions
qapi: Refill doc comments to conform to conventions
qapi/audio: Fix description markup of AudiodevDBusOptions @nsamples
meson: Add missing backends.py to qapi_gen_depends
qapi/command: Avoid generating unused qmp_marshal_output_T()
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
nettle included XTS in 3.4.1, so with the new min version we
no longer require the in-tree XTS cipher mode impl.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Define the TYPE_TARGET_ARM_MACHINE and TYPE_TARGET_AARCH64_MACHINE
QOM interface names to allow machines to implement them.
Register these interfaces in common code in target_info-qom.c used
by all binaries because QOM interfaces must be registered before
being checked (see next commit with the 'none' machine).
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20251021205741.57109-2-philmd@linaro.org>
The definition of types needed for g_autolist(), g_autoslist(),
g_autoqueue() need the imports for GList, GSList and GQueue
to appear everything. Rust code is never going to see those,
since they are not used in structs. Block the types from
appearing in the bindings.
Co-authored-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Create the MSHV virtual machine by opening a partition and issuing
the necessary ioctl to initialize it. This sets up the basic VM
structure and initial configuration used by MSHV to manage guest state.
Signed-off-by: Magnus Kulke <magnuskulke@linux.microsoft.com>
Link: https://lore.kernel.org/r/20250916164847.77883-10-magnuskulke@linux.microsoft.com
[Add stubs; fix format strings for trace-events; make mshv_hvcall
available only in per-target files; mshv.h/mshv_int.h split. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
gitlab CI restricts usage of directories for the build environment and
cache. Msys64 is installed under project root ($srcdir/msys64). This
confuses rust-bindgen allowlist-file which will generate bindings for
all the system include headers under msys64/.
blocklist-file is also too strict, as it prevents generating all the
recursively dependent types coming from system includes.
Instead, let's not use allowlist-file from the project root,
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20250924120426.2158655-22-marcandre.lureau@redhat.com>
It fails to link on fedora >= 41:
/usr/bin/ld: /usr/bin/../lib/clang/20/lib/x86_64-redhat-linux-gnu/libclang_rt.safestack.a(safestack.cpp.o): in function `__sanitizer_internal_memcpy':
(.text.__sanitizer_internal_memcpy+0x0): multiple definition of `__sanitizer_internal_memcpy'; /usr/bin/../lib/clang/20/lib/x86_64-redhat-linux-gnu/libclang_rt.ubsan_standalone.a(sanitizer_libc.cpp.o):(.text.__sanitizer_internal_memcpy+0x0): first defined here
/usr/bin/ld: /usr/bin/../lib/clang/20/lib/x86_64-redhat-linux-gnu/libclang_rt.safestack.a(safestack.cpp.o): in function `__sanitizer_internal_memmove':
(.text.__sanitizer_internal_memmove+0x0): multiple definition of `__sanitizer_internal_memmove'; /usr/bin/../lib/clang/20/lib/x86_64-redhat-linux-gnu/libclang_rt.ubsan_standalone.a(sanitizer_libc.cpp.o):(.text.__sanitizer_internal_memmove+0x0): first defined here
/usr/bin/ld: /usr/bin/../lib/clang/20/lib/x86_64-redhat-linux-gnu/libclang_rt.safestack.a(safestack.cpp.o): in function `__sanitizer_internal_memset':
(.text.__sanitizer_internal_memset+0x0): multiple definition of `__sanitizer_internal_memset'; /usr/bin/../lib/clang/20/lib/x86_64-redhat-linux-gnu/libclang_rt.ubsan_standalone.a(sanitizer_libc.cpp.o):(.text.__sanitizer_internal_memset+0x0): first defined here
cfi_debug seems to pull ubsan which has conflicting symbols with safe_stack.
See also: https://bugzilla.redhat.com/show_bug.cgi?id=2397265
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20250924120426.2158655-12-marcandre.lureau@redhat.com>
The passt networking backend uses functions from the GIO library,
such as g_subprocess_launcher_new(), to manage its daemon process.
So, building with passt enabled requires GIO to be available.
If we enable passt and disable gio the build fails during linkage with
undefined reference errors:
/usr/bin/ld: libsystem.a.p/net_passt.c.o: in function `net_passt_start_daemon':
net/passt.c:250: undefined reference to `g_subprocess_launcher_new'
/usr/bin/ld: net/passt.c:251: undefined reference to `g_subprocess_launcher_take_fd'
/usr/bin/ld: net/passt.c:253: undefined reference to `g_subprocess_launcher_spawnv'
/usr/bin/ld: net/passt.c:256: undefined reference to `g_object_unref'
/usr/bin/ld: net/passt.c:263: undefined reference to `g_subprocess_wait'
/usr/bin/ld: net/passt.c:268: undefined reference to `g_subprocess_get_if_exited'
/usr/bin/ld: libsystem.a.p/net_passt.c.o: in function `glib_autoptr_clear_GSubprocess':
/usr/include/glib-2.0/gio/gio-autocleanups.h:132: undefined reference to `g_object_unref'
/usr/bin/ld: libsystem.a.p/net_passt.c.o: in function `net_passt_start_daemon':
net/passt.c:269: undefined reference to `g_subprocess_get_exit_status'
Fix this by adding an explicit weson dependency on GIO for the passt
option.
The existing dependency on linux is kept because passt is only available
on this OS.
Cc: qemu-stable@nongnu.org
Fixes: 854ee02b22 ("net: Add passt network backend")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3121
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This is largely derived from existing Darwin support. FreeBSD
apparently has better support for *at() system calls so doesn't require
workarounds for a missing mknodat(). The implementation has a couple of
warts however:
- The extattr(2) system calls don't support anything akin to
XATTR_CREATE or XATTR_REPLACE, so a racy workaround is implemented.
- Attribute names cannot begin with "user." or "system." on ZFS.
However FreeBSD's extattr(2) system calls support two dedicated
namespaces for these two. So "user." or "system." prefixes are
trimmed off from attribute names and instead EXTATTR_NAMESPACE_USER or
EXTATTR_NAMESPACE_SYSTEM are picked and passed to extattr system calls
accordingly.
The 9pfs tests were verified to pass on the UFS, ZFS and tmpfs
filesystems.
Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Link: https://lore.kernel.org/qemu-devel/aJOWhHB2p-fbueAm@nuc
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Prepare to split the main linux-user/elfload.c.
Create empty files for each target, and add the common build rule.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
brlapi__openConnection returns a brlapi_fileDescriptor which is a pointer
for Windows builds.
The test for brlapi fails with cross builds on Debian trixie
(x86_64-w64-mingw32-gcc (GCC) 14-win32):
testfile.c:4:30: error: returning 'brlapi_fileDescriptor' {aka 'void *'} from a function with return type 'int' makes integer from pointer without a cast [-Wint-conversion]
4 | int main(void) { return brlapi__openConnection (NULL, NULL, NULL); }
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-----------
../../../meson.build:1607: WARNING: could not link brlapi, disabling
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
When TLS 1.3 is negotiated on a TLS session, GNUTLS will perform
automatic rekeying of the session after 16 million records. This
is done for all algorithms except CHACHA20_POLY1305 which does
not require rekeying.
Unfortunately the rekeying breaks GNUTLS' promise that it is safe
to use a gnutls_session_t object concurrently from multiple threads
if they are exclusively calling gnutls_record_send/recv.
This patch implements a workaround for QEMU that adds a mutex lock
around any gnutls_record_send/recv call to serialize execution
within GNUTLS code. When GNUTLS calls into the push/pull functions
we can release the lock so the OS level I/O calls can at least
have some parallelism.
The big downside of this is that the actual encryption/decryption
code is fully serialized, which will halve performance of that
cipher operations if two threads are contending.
The workaround is not enabled by default, since most use of GNUTLS
in QEMU does not tickle the problem, only non-multifd migration
with a return path open is affected. Fortunately the migration
code also won't trigger the halving of performance, since only
the outbound channel diretion needs to sustain high data rates,
the inbound direction is low volume.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/qemu-devel/20250718150514.2635338-2-berrange@redhat.com
[add stub for qcrypto_tls_session_require_thread_safety; fix unused var]
Signed-off-by: Fabiano Rosas <farosas@suse.de>
* rust: miscellaneous fixes
* rust: qemu-api-macros: cleanup and add unit tests for TryInto
* rust: log: implement io::Write, avoid memory allocations
when logging constant strings
* target/i386: fix usage of properties whenever accelerators
change the default (e.g. vendor)
* target/i386: add support for TDVMCALL_SETUP_EVENT_NOTIFY_INTERRUPT
* target/i386: add support for booting an SEV VM from an IGVM file
* target/i386: unify cache model descriptions between CPUID 2,
CPUID 4 and AMD specific CPUID 0x80000006
* target/i386: introduce cache models for recent Intel CPU models
* target/i386: mark some 0x80000000-0x80000008 bits as reserved on Intel
* target/i386: cleanups
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# gpg: Signature made Mon 14 Jul 2025 04:29:31 EDT
# 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: (77 commits)
i386/cpu: Honor maximum value for CPUID.8000001DH.EAX[25:14]
i386/cpu: Fix overflow of cache topology fields in CPUID.04H
i386/cpu: Fix cpu number overflow in CPUID.01H.EBX[23:16]
i386/cpu: Fix number of addressable IDs field for CPUID.01H.EBX[23:16]
i386/cpu: Reorder CPUID leaves in cpu_x86_cpuid()
tests/vm: bump FreeBSD image to 14.3
tests/functional: test_x86_cpu_model_versions: remove dead tests
i386/cpu: Mark CPUID 0x80000008 ECX bits[0:7] & [12:15] as reserved for Intel/Zhaoxin
i386/cpu: Mark CPUID 0x80000007[EBX] as reserved for Intel
i386/cpu: Mark EBX/ECX/EDX in CPUID 0x80000000 leaf as reserved for Intel
i386/cpu: Enable 0x1f leaf for YongFeng by default
i386/cpu: Enable 0x1f leaf for SapphireRapids by default
i386/cpu: Enable 0x1f leaf for GraniteRapids by default
i386/cpu: Enable 0x1f leaf for SierraForest by default
i386/cpu: Enable 0x1f leaf for SierraForest by default
i386/cpu: Add a "x-force-cpuid-0x1f" property
i386/cpu: Introduce cache model for YongFeng
i386/cpu: Introduce cache model for SapphireRapids
i386/cpu: Introduce cache model for GraniteRapids
i386/cpu: Introduce cache model for SierraForest
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit introduces support for passt as a new network backend.
passt is an unprivileged, user-mode networking solution that provides
connectivity for virtual machines by launching an external helper process.
The implementation reuses the generic stream data handling logic. It
launches the passt binary using GSubprocess, passing it a file
descriptor from a socketpair() for communication. QEMU connects to
the other end of the socket pair to establish the network data stream.
The PID of the passt daemon is tracked via a temporary file to
ensure it is terminated when QEMU exits.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
The IGVM library allows Independent Guest Virtual Machine files to be
parsed and processed. IGVM files are used to configure guest memory
layout, initial processor state and other configuration pertaining to
secure virtual machines.
This adds the --enable-igvm configure option, enabled by default, which
attempts to locate and link against the IGVM library via pkgconfig and
sets CONFIG_IGVM if found.
The library is added to the system_ss target in backends/meson.build
where the IGVM parsing will be performed by the ConfidentialGuestSupport
object.
Signed-off-by: Roy Hopkins <roy.hopkins@randomman.co.uk>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Gerd Hoffman <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Link: https://lore.kernel.org/r/45945a83a638c3f08e68c025f378e7b7f4f6d593.1751554099.git.roy.hopkins@randomman.co.uk
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Once qemu-api is split in multiple crates, each of them will have
its own invocation of bindgen. There cannot be only one, because
there are occasional "impl" blocks for the bindgen-generated
structs (e.g. VMStateFlags or QOM classes) that have to
reside in the same crate as the bindgen-generated code.
For now, prepare for this new organization by invoking bindgen
within the qemu-api crate's build definitions; it's also a
much better place to list enums that need specific treatment
from bindgen.
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When splitting the QEMU Rust bindings into multiple crates, the
bindgen-generated structs also have to be split so that it's
possible to add "impl" blocks (e.g. for Sync/Send or Default,
or even for utility methods in cases such as VMStateFlags).
Tweak various variable definitions in meson.build, to avoid naming
conflicts once there will be multiple bindgen invocations.
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
As pointed out by Akihiko Odaki, all Win32 libraries in MinGW have lowercase
names. This means that on (case-insensitive) Windows you can use the mixed-case
names suggested by Microsoft or all-lowercase names, while on Linux you need to
make them lowercase.
QEMU was already using lowercase names, so there is no need to test the
mixed-case name version of libSynchronization. Remove the unnecessary test
and while at it make all the tests use "required: true".
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Matt Borgerson