Commit graph

1122 commits

Author SHA1 Message Date
Philippe Mathieu-Daudé
c9ce8a1ffd linux-user: Only include 'exec/tb-flush.h' header when necessary
Very few source files require to access "exec/tb-flush.h"
declarations, and except a pair, they all include it
explicitly. No need to overload the generic "user-internals.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20250102182521.65428-2-philmd@linaro.org>
2025-03-09 14:54:32 +01:00
Stefan Hajnoczi
ffaf7f0376 testing and gdbstub updates:
- add a check-rust test to docker builds
   - re-factor the qtest logic to be cleaner
   - fix tests to not clock_step when no timers enabled
   - roll-up log prefix into qtest_send
   - cleaner error reporting when qtest_clock_set fails
   - revert old deadlock fix now tests are updated
   - only run full set of migration tests under HW acceleration
   - support late attachment to user-mode gdbstubs
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Merge tag 'pull-10.0-testing-and-gdstub-updates-100225-1' of https://gitlab.com/stsquad/qemu into staging

testing and gdbstub updates:

  - add a check-rust test to docker builds
  - re-factor the qtest logic to be cleaner
  - fix tests to not clock_step when no timers enabled
  - roll-up log prefix into qtest_send
  - cleaner error reporting when qtest_clock_set fails
  - revert old deadlock fix now tests are updated
  - only run full set of migration tests under HW acceleration
  - support late attachment to user-mode gdbstubs

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# gpg: Signature made Mon 10 Feb 2025 08:54:51 EST
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* tag 'pull-10.0-testing-and-gdstub-updates-100225-1' of https://gitlab.com/stsquad/qemu:
  tests/tcg: Add late gdbstub attach test
  docs/user: Document the %d placeholder and suspend=n QEMU_GDB features
  gdbstub: Allow late attachment
  osdep: Introduce qemu_kill_thread()
  user: Introduce host_interrupt_signal
  user: Introduce user/signal.h
  gdbstub: Try unlinking the unix socket before binding
  gdbstub: Allow the %d placeholder in the socket path
  tests/qtest/migration: Pick smoke tests
  tests/qtest/migration: Add --full option
  Revert "util/timer: avoid deadlock when shutting down"
  tests/qtest: tighten up the checks on clock_step
  tests/qtest: rename qtest_send_prefix and roll-up into qtest_send
  tests/qtest: simplify qtest_process_inbuf
  tests/qtest: don't step clock at start of npcm7xx periodic IRQ test
  tests/qtest: don't attempt to clock_step while waiting for virtio ISR
  tests/docker: replicate the check-rust-tools-nightly CI job

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-02-10 13:26:17 -05:00
Ilya Leoshkevich
08916fd4b6 user: Introduce user/signal.h
gdbstub needs target_to_host_signal(), so move its declaration to a
public header.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20250117001542.8290-4-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250207153112.3939799-13-alex.bennee@linaro.org>
2025-02-10 13:47:59 +00:00
Khem Raj
27a8d899c7 linux-user: Do not define struct sched_attr if libc headers do
glibc 2.41+ has added [1] definitions for sched_setattr and
sched_getattr functions and struct sched_attr.  Therefore, it needs
to be checked for here as well before defining sched_attr, to avoid
a compilation failure.

Define sched_attr conditionally only when SCHED_ATTR_SIZE_VER0 is
not defined.

[1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=21571ca0d70302909cf72707b2a7736cf12190a0;hp=298bc488fdc047da37482f4003023cb9adef78f8

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2799
Cc: qemu-stable@nongnu.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2025-02-07 16:09:20 +00:00
Helge Deller
f65464ce6d linux-user: netlink: Add emulation of IP_MULTICAST_IF
Add IP_MULTICAST_IF and share the code with IP_ADD_MEMBERSHIP / IP_DROP_MEMBERSHIP.
Sharing the code makes sense, because the manpage of ip(7) says:

IP_MULTICAST_IF (since Linux 1.2)
      Set the local device for a multicast socket.  The argument
      for setsockopt(2) is an ip_mreqn or (since Linux 3.5)
      ip_mreq structure similar to IP_ADD_MEMBERSHIP, or an
      in_addr structure.  (The kernel determines which structure
      is being passed based on the size passed in optlen.)  For
      getsockopt(2), the argument is an in_addr structure.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24 13:58:40 +01:00
Helge Deller
017fc6620f linux-user: netlink: Add IP_PKTINFO cmsg parsing
Fixes those warnings:
 Unsupported host ancillary data: 0/8

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24 13:58:40 +01:00
Helge Deller
b97f8d1fa5 linux-user: Use unique error messages for cmsg parsing
Avoid using the same error message for two different code paths
as it complicates determining the one which actually triggered.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24 13:58:40 +01:00
Philippe Mathieu-Daudé
8865049bab accel/tcg: Move tcg_cflags_has/set() to 'exec/translation-block.h'
The TranslationBlock flags are defined in 'exec/translation-block.h'.
tcg_cflags_has/set() use them, it is more logical to declare them in
the same place. Move them there too.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212144430.66224-2-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
b74c898158 user: Move 'linux-user/cpu_loop-common.h' -> 'user/cpu_loop.h'
"linux-user/cpu_loop-common.h" is generic enough to be used by
bsd-user, so rename it as "user/cpu_loop.h".

Mechanical change running:

  $ sed -i -e 's,cpu_loop-common.h,user/cpu_loop.h,' \
                $(git grep -l cpu_loop-common.h)

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>
Message-Id: <20241212185341.2857-17-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
970ae60e9b accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (1/4)
Move declarations related to page protection under user
emulation from "exec/cpu-all.h" to "user/page-protection.h".

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>
Message-Id: <20241212185341.2857-12-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Ilya Leoshkevich
d95fd9838b linux-user: Fix strace output for s390x mmap()
print_mmap() assumes that mmap() receives arguments via memory if
mmap2() is present. s390x (as opposed to s390) does not fit this
pattern: it does not have mmap2(), but mmap() still receives arguments
via memory.

Fix by sharing the detection logic between syscall.c and strace.c.

Cc: qemu-stable@nongnu.org
Fixes: d971040c2d ("linux-user: Fix strace output for old_mmap")
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20241120212717.246186-1-iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-22 14:20:38 -06:00
Helge Deller
8491026a08 linux-user: Fix setreuid and setregid to use direct syscalls
The commit fd6f7798ac ("linux-user: Use direct syscalls for setuid(),
etc") added direct syscall wrappers for setuid(), setgid(), etc since the
system calls have different semantics than the libc functions.

Add and use the corresponding wrappers for setreuid and setregid which
were missed in that commit.

This fixes the build of the debian package of the uid_wrapper library
(https://cwrap.org/uid_wrapper.html) when running linux-user.

Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <Zyo2jMKqq8hG8Pkz@p100>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16 08:40:19 -08:00
Peter Maydell
6b3756503b tcg: Reset data_gen_ptr correctly
tcg/riscv: Implement host vector support
 tcg/ppc: Fix tcg_out_rlw_rc
 target/i386: Walk NPT in guest real mode
 target/i386: Use probe_access_full_mmu in ptw_translate
 linux-user: Fix build failure caused by missing __u64 on musl
 linux-user: Emulate /proc/self/maps under mmap_lock
 linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN
 linux-user/ppc: Fix sigmask endianness issue in sigreturn
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Merge tag 'pull-tcg-20241022' of https://gitlab.com/rth7680/qemu into staging

tcg: Reset data_gen_ptr correctly
tcg/riscv: Implement host vector support
tcg/ppc: Fix tcg_out_rlw_rc
target/i386: Walk NPT in guest real mode
target/i386: Use probe_access_full_mmu in ptw_translate
linux-user: Fix build failure caused by missing __u64 on musl
linux-user: Emulate /proc/self/maps under mmap_lock
linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN
linux-user/ppc: Fix sigmask endianness issue in sigreturn

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# 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-20241022' of https://gitlab.com/rth7680/qemu: (24 commits)
  linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN
  linux-user: Fix build failure caused by missing __u64 on musl
  linux-user: Trace rt_sigprocmask's sigsets
  linux-user/ppc: Fix sigmask endianness issue in sigreturn
  linux-user: Emulate /proc/self/maps under mmap_lock
  target/i386: Remove ra parameter from ptw_translate
  target/i386: Use probe_access_full_mmu in ptw_translate
  target/i386: Walk NPT in guest real mode
  include/exec: Improve probe_access_full{, _mmu} documentation
  tcg/ppc: Fix tcg_out_rlw_rc
  tcg/riscv: Enable native vector support for TCG host
  tcg/riscv: Implement vector roti/v/x ops
  tcg/riscv: Implement vector shi/s/v ops
  tcg/riscv: Implement vector min/max ops
  tcg/riscv: Implement vector sat/mul ops
  tcg/riscv: Accept constant first argument to sub_vec
  tcg/riscv: Implement vector neg ops
  tcg/riscv: Implement vector cmp/cmpsel ops
  tcg/riscv: Add support for basic vector opcodes
  tcg/riscv: Implement vector mov/dup{m/i}
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-24 15:21:42 +01:00
Yao Zi
310df7a9fe linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN
Current definition yields a negative 32bits value, messing up hwprobe
result when Zvfhmin extension presents. Replace it by using a 1ULL bit
shift value as done in kernel upstream.

Link: 5ea6764d90
Fixes: a3432cf227 ("linux-user/riscv: Sync hwprobe keys with Linux")
Cc: qemu-stable@nongnu.org
Signed-off-by: Yao Zi <ziyao@disroot.org>
Message-ID: <20241022160136.21714-2-ziyao@disroot.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22 13:45:03 -07:00
Ilya Leoshkevich
bbd5630a75 linux-user: Emulate /proc/self/maps under mmap_lock
If one thread modifies the mappings and another thread prints them,
a situation may occur that the printer thread sees a guest mapping
without a corresponding host mapping, leading to a crash in
open_self_maps_2().

Cc: qemu-stable@nongnu.org
Fixes: 7b7a3366e1 ("linux-user: Use walk_memory_regions for open_self_maps")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241014203441.387560-1-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22 13:45:03 -07:00
Gustavo Romero
fe71f4b0de linux-user: Clean up unused header
Clean up unused (already commented-out) header from syscall.c.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-10-21 22:40:47 +03:00
Michael Vogt
9729930344 linux-user: add strace support for openat2
This commit adds support for the `openat2()` to `QEMU_STRACE`. It
will use the `openat2.h` header if available to create user
readable flags for the `resolve` argument but does not require
the header otherwise.

It also makes `copy_struct_from_user()` available via `qemu.h`
and `open_how_ver0` via `syscall_defs.h` so that strace.c can use
them.

Signed-off-by: Michael Vogt <mvogt@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <f02d40c7751c03af885ced6dd94e4734d4be4d8f.1727795334.git.mvogt@redhat.com>
[rth: Add braces around the expanded how structure, like strace(3)]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08 06:31:36 -07:00
Michael Vogt
9651cead2f linux-user: add openat2 support in linux-user
This commit adds support for the `openat2()` syscall in the
`linux-user` userspace emulator.

It is implemented by extracting a new helper `maybe_do_fake_open()`
out of the exiting `do_guest_openat()` and share that with the
new `do_guest_openat2()`. Unfortunately we cannot just make
do_guest_openat2() a superset of do_guest_openat() because the
openat2() syscall is stricter with the argument checking and
will return an error for invalid flags or mode combinations (which
open()/openat() will ignore).

The implementation is similar to SYSCALL_DEFINE(openat2), i.e.
a new `copy_struct_from_user()` is used that works the same
as the kernels version to support backwards-compatibility
for struct syscall argument.

Instead of including openat2.h we create a copy of `open_how`
as `open_how_ver0` to ensure that if the structure grows we
can log a LOG_UNIMP warning.

Note that in this commit using openat2() for a "faked" file in
/proc will honor the "resolve" flags for
RESOLVE_NO_{MAGIC,SYM}LINKS for path based access to /proc/self/exe
(which is the only magic link we support for faked files).
Note it will not catch special access via e.g. dirfd. This is not
great but it seems similar to the exiting behavior when openat()
is called with a dirfd to "/proc". Here too the fake file lookup
may not catch the special file because no dirfd is used to
determine if the path is in /proc.

Signed-off-by: Michael Vogt <mvogt@redhat.com>
Buglink: https://github.com/osbuild/bootc-image-builder/issues/619
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <1c2c8c9db3731ed4c6fd9b10c63637c3e4caf8f5.1727795334.git.mvogt@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08 06:31:36 -07:00
Michael Tokarev
99174ce39e linux-user/syscall.c: eliminate other explicit LFS usages
Since we alwasy build with LFS enabled, and with -D_FILE_OFFSET_BITS=64
in particular, there is no need to use 64bit versions of various system
calls and constants, regular ones will do just fine.  Eliminate a few
last uses of the following constructs in linux-user/syscall.c:
  off64_t
  ftruncate64()
  lseek64()
  pread64()
  pwrite64()

This way it can be built on systems where the 64bit variants of
everything is not defined (since the system always uses 64bit
variants), such as on recent MUSL.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2215
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-20 08:06:56 +03:00
Michael Tokarev
ac1bbe8ca4 linux-user/syscall.c: drop 64 suffix from flock64 &Co
Since we are always building with LFS enabled, in particular
with -D_FILE_OFFSET_BITS=64, we should always have struct flock
mapped to the 64bit variant (with off64_t), and F_GETLK mapped
to F_GETLK64 etc, automatically.

So there should be no need to explicitly use the "64" suffix
for these things anymore.

Also fix a misleading comment near safe_fcntl telling us to
always use flock64 (since v2.6.0-1311-g435da5e7092a "linux-user:
Use safe_syscall wrapper for fcntl").

Reference: https://gitlab.com/qemu-project/qemu/-/issues/2215
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-20 08:06:56 +03:00
Philippe Mathieu-Daudé
bff4b02ca1 linux-user: Remove support for CRIS target
As per the deprecation notice in commit c7bbef4023:

  The CRIS architecture was pulled from Linux in 4.17 and
  the compiler is no longer packaged in any distro making
  it harder to run the `check-tcg` tests. Unless we can
  improve the testing situation there is a chance the code
  will bitrot without anyone noticing.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Message-ID: <20240904143603.52934-5-philmd@linaro.org>
2024-09-13 20:10:50 +02:00
Fabio D'Urso
d9b019e0a0 linux-user: open_self_stat: Implement num_threads
The num_threads field reports the total number of threads in the
process. In QEMU, this is equal to the number of CPU instances.

Signed-off-by: Fabio D'Urso <fdurso@google.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-ID: <20240619194109.248066-1-fdurso@google.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-30 07:59:23 +10:00
Gustavo Romero
bef6a77f6d target/arm: Factor out code for setting MTE TCF0 field
Factor out the code used for setting the MTE TCF0 field from the prctl
code into a convenient function. Other subsystems, like gdbstub, need to
set this field as well, so keep it as a separate function to avoid
duplication and ensure consistency in how this field is set across the
board.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-Id: <20240628050850.536447-7-gustavo.romero@linaro.org>
[AJB: clean-up includes, move MTE defines]
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-36-alex.bennee@linaro.org>
2024-07-05 12:35:14 +01:00
Ilya Leoshkevich
54b2792102 linux-user: Make TARGET_NR_setgroups affect only the current thread
Like TARGET_NR_setuid, TARGET_NR_setgroups should affect only the
calling thread, and not the entire process. Therefore, implement it
using a syscall, and not a libc call.

Cc: qemu-stable@nongnu.org
Fixes: 19b84f3c35 ("added setgroups and getgroups syscalls")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240614154710.1078766-1-iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-06-19 13:50:22 -07:00
Philippe Mathieu-Daudé
59272469bd user: Use get_task_state() helper
Get the TaskState pointer calling get_task_state().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-11-philmd@linaro.org>
2024-05-06 14:13:45 +02:00
Philippe Mathieu-Daudé
b254c342cf accel/tcg: Access tcg_cflags with getter / setter
Access the CPUState::tcg_cflags via tcg_cflags_has() and
tcg_cflags_set() helpers.

Mechanical change using the following Coccinelle spatch script:

  @@
  expression cpu;
  expression flags;
  @@
  -     cpu->tcg_cflags & flags
  +     tcg_cflags_has(cpu, flags)

  @@
  expression cpu;
  expression flags;
  @@
  -     (tcg_cflags_has(cpu, flags))
  +     tcg_cflags_has(cpu, flags)

  @@
  expression cpu;
  expression flags;
  @@
  -     cpu->tcg_cflags |= flags;
  +     tcg_cflags_set(cpu, flags);

Then manually moving the declarations, and adding both
tcg_cflags_has() and tcg_cflags_set() definitions.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-15-philmd@linaro.org>
2024-05-06 11:21:05 +02:00
Philippe Mathieu-Daudé
74781c0888 exec/cpu: Extract page-protection definitions to page-protection.h
Extract page-protection definitions from "exec/cpu-all.h"
to "exec/page-protection.h".

The list of files requiring the new header was generated
using:

$ git grep -wE \
  'PAGE_(READ|WRITE|EXEC|RWX|VALID|ANON|RESERVED|TARGET_.|PASSTHROUGH)'

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-3-philmd@linaro.org>
2024-05-06 11:17:15 +02:00
Michael Tokarev
88a722b6ad linux-user: do_setsockopt: eliminate goto in switch for SO_SNDTIMEO
There's identical code for SO_SNDTIMEO and SO_RCVTIMEO, currently
implemented using an ugly goto into another switch case.  Eliminate
that using arithmetic if, making code flow more natural.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-5-mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-24 15:46:00 -07:00
Michael Tokarev
166bd92e3b linux-user: do_setsockopt: make ip_mreq_source local to the place where it is used
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-4-mjt@tls.msk.ru>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-24 15:46:00 -07:00
Michael Tokarev
124a1341a6 linux-user: do_setsockopt: make ip_mreq local to the place it is used and inline target_to_host_ip_mreq()
ip_mreq is declared at the beginning of do_setsockopt(), while
it is used in only one place.  Move its declaration to that very
place and replace pointer to alloca()-allocated memory with the
structure itself.

target_to_host_ip_mreq() is used only once, inline it.

This change also properly handles TARGET_EFAULT when the address
is wrong.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-3-mjt@tls.msk.ru>
[rth: Fix braces, adjust optlen to match host structure size]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-24 15:46:00 -07:00
Michael Tokarev
04f6fb897a linux-user: do_setsockopt: fix SOL_ALG.ALG_SET_KEY
This setsockopt accepts zero-lengh optlen (current qemu implementation
does not allow this).  Also, there's no need to make a copy of the key,
it is enough to use lock_user() (which accepts zero length already).

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2197
Fixes: f31dddd2fc "linux-user: Add support for setsockopt() option SOL_ALG"
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-2-mjt@tls.msk.ru>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-24 15:46:00 -07:00
Richard Henderson
f0907ff4ca linux-user: Fix waitid return of siginfo_t and rusage
The copy back to siginfo_t should be conditional only on arg3,
not the specific values that might have been written.
The copy back to rusage was missing entirely.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2262
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Alex Fan <alex.fan.q@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-04-09 07:43:11 -10:00
Richard Henderson
8de24b1563 linux-user: Implement PR_GET_TID_ADDRESS
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-03-12 03:35:01 -10:00
Richard Henderson
91511bd40f linux-user: Implement PR_{GET,SET}_SPECULATION_CTRL
Both of these only pass and return integral values.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-03-12 03:35:01 -10:00
Richard Henderson
07726f522d linux-user: Implement PR_{GET,SET}_CHILD_SUBREAPER
The "set" prctl passes through integral values.
The "get" prctl returns the value into a pointer.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1929
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-03-12 03:35:00 -10:00
Christoph Müllner
4f1a53b362 linux-user/riscv: Add Ztso extension to hwprobe
This patch exposes Ztso via hwprobe in QEMU's user space emulator.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20240207122256.902627-3-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-03-08 20:48:03 +10:00
Christoph Müllner
a3432cf227 linux-user/riscv: Sync hwprobe keys with Linux
Upstream Linux recently added many additional keys to the hwprobe API.
This patch adds support for all of them with the exception of Ztso,
which is currently not supported in QEMU.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20240207115926.887816-3-christoph.muellner@vrull.eu>
[ Changes by AF:
 - Fixup whitespace
]
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-03-08 16:26:52 +10:00
Christoph Müllner
0191131dba linux-user/riscv: Add Zicboz extensions to hwprobe
Upstream Linux recently added RISC-V Zicboz support to the hwprobe API.
This patch introduces this for QEMU's user space emulator.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20240207115926.887816-2-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-03-08 15:42:49 +10:00
Ilya Leoshkevich
4edc98fcc8 {linux,bsd}-user: Pass pid to fork_end()
The upcoming follow-fork-mode child support requires knowing the child
pid. Pass it down.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240219141628.246823-6-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-7-alex.bennee@linaro.org>
2024-03-06 12:35:19 +00:00
Ilya Leoshkevich
e4e5cb4a54 {linux,bsd}-user: Introduce get_task_state()
A CPU's TaskState is stored in the CPUState's void *opaque field,
accessing which is somewhat awkward due to having to use a cast.
Introduce a wrapper and use it everywhere.

Suggested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240219141628.246823-3-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-4-alex.bennee@linaro.org>
2024-03-06 12:35:19 +00:00
Richard Henderson
4ef1f559f2 linux-user/x86_64: Handle the vsyscall page in open_self_maps_{2,4}
This is the only case in which we expect to have no host memory backing
for a guest memory page, because in general linux user processes cannot
map any pages in the top half of the 64-bit address space.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2170
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-02-29 14:24:24 -10:00
Palmer Dabbelt
301c65f49f linux-user/riscv: Add Zicboz block size to hwprobe
Support for probing the Zicboz block size landed in Linux 6.6, which was
released a few weeks ago.  This provides the user-configured block size
when Zicboz is enabled.

Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231110173716.24423-1-palmer@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-11-22 13:54:02 +10:00
Michael Tokarev
2cf91b9ae6 linux-user: spelling fixes: othe, necesary
Fixes: e34136d930 "linux-user/ppc: Add vdso"
Fixes: 86f04735ac "linux-user: Fix brk() to release pages"
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2023-11-15 11:09:17 +03:00
Richard Henderson
5d94c2ffa8 linux-user: Show vdso address in /proc/pid/maps
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-30 13:41:56 -07:00
Laurent Vivier
77c9f177e0 linux-user/syscall.c: clean up local variable shadowing in xattr syscalls
p is a generic variable in syscall() and can be used by any syscall
case, so this patch removes the useless local variable declaration for
the following syscalls: TARGET_NR_llistxattr, TARGET_NR_listxattr,
TARGET_NR_setxattr, TARGET_NR_lsetxattr, TARGET_NR_getxattr,
TARGET_NR_lgetxattr, TARGET_NR_removexattr, TARGET_NR_lremovexattr.

Fix following warnings:

.../linux-user/syscall.c:12342:15: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12342 |         void *p, *b = 0;
      |               ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^
.../linux-user/syscall.c:12379:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12379 |             void *p, *n, *v = 0;
      |                   ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^
.../linux-user/syscall.c:12424:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12424 |             void *p, *n, *v = 0;
      |                   ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^
.../linux-user/syscall.c:12469:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12469 |             void *p, *n;
      |                   ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-6-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Laurent Vivier
9962b7c213 linux-user/syscall.c: clean up local variable shadowing in TARGET_NR_getcpu
Fix following warnings:

.../linux-user/syscall.c: In function 'do_syscall1':
.../linux-user/syscall.c:11180:22: warning: declaration of 'cpu' shadows a previous local [-Wshadow=local]
11180 |             unsigned cpu, node;
      |                      ^~~
.../linux-user/syscall.c:8963:15: note: shadowed declaration is here
 8963 |     CPUState *cpu = env_cpu(cpu_env);
      |               ^~~

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-5-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Laurent Vivier
eb2929ca50 linux-user/syscall.c: clean up local variable shadowing in do_ioctl_dm()
Fix following warnings:

.../linux-user/syscall.c: In function 'do_ioctl_dm':
.../linux-user/syscall.c:5053:23: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5053 |         const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
      |                       ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~
...//linux-user/syscall.c:5102:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5102 |             const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
      |                           ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~
.../linux-user/syscall.c:5130:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5130 |             const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
      |                           ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~
.../linux-user/syscall.c:5170:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5170 |             const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
      |                           ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-4-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Richard Henderson
d7ec12f83c tcg: Split out tcg init functions to tcg/startup.h
The tcg/tcg.h header is a big bucket, containing stuff related to
the translators and the JIT backend.  The places that initialize
tcg or create new threads do not need all of that, so split out
these three functions to a new header.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04 11:03:54 -07:00
Robbin Ehn
bb0a45e931 linux-user/riscv: Add new extensions to hwprobe
This patch adds the new extensions in
linux 6.5 to the hwprobe syscall.

And fixes RVC check to OR with correct value.
The previous variable contains 0 therefore it
did work.

Signed-off-by: Robbin Ehn <rehn@rivosinc.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <bc82203b72d7efb30f1b4a8f9eb3d94699799dc8.camel@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-09-11 11:45:55 +10:00
Stefan Hajnoczi
bde438c3ec linux-user: Rewrite and improve /proc/pid/maps
linux-user: Fix shmdt and improve shm region tracking
 linux-user: Remove ELF_START_MMAP and image_info.start_mmap
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Merge tag 'pull-lu-20230901' of https://gitlab.com/rth7680/qemu into staging

linux-user: Rewrite and improve /proc/pid/maps
linux-user: Fix shmdt and improve shm region tracking
linux-user: Remove ELF_START_MMAP and image_info.start_mmap

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* tag 'pull-lu-20230901' of https://gitlab.com/rth7680/qemu:
  linux-user: Track shm regions with an interval tree
  linux-user: Fix shmdt
  linux-user: Use WITH_MMAP_LOCK_GUARD in target_{shmat,shmdt}
  linux-user: Move shmat and shmdt implementations to mmap.c
  linux-user: Remove ELF_START_MMAP and image_info.start_mmap
  linux-user: Emulate the Anonymous: keyword in /proc/self/smaps
  linux-user: Show heap address in /proc/pid/maps
  linux-user: Adjust brk for load_bias
  linux-user: Use walk_memory_regions for open_self_maps
  util/selfmap: Use dev_t and ino_t in MapInfo
  linux-user: Emulate /proc/cpuinfo for Alpha
  linux-user: Emulate /proc/cpuinfo on aarch64 and arm
  linux-user: Split out cpu/target_proc.h

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-09-06 11:15:10 -04:00