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2023-02-03Merge tag 'pull-tcg-20230123' of https://gitlab.com/rth7680/qemu into stagingPeter Maydell
common-user: Re-enable ppc32 host tcg: Avoid recursion in tcg_gen_mulu2_i32 tcg: Mark tcg helpers noinline to avoid an issue with LTO tcg/arm: Use register pair allocation for qemu_{ld,st}_i64 disas: Enable loongarch disassembler, and fixes tcg/loongarch64: Improve move immediate tcg/loongarch64: Improve add immediate tcg/loongarch64: Improve setcond tcg/loongarch64: Implement movcond tcg/loongarch64: Use tcg_pcrel_diff in tcg_out_ldst tcg/loongarch64: Reorg goto_tb implementation # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmPPO+0dHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV93jwgAhG+H5XHtJqF2isCc # a6pYuUWRbhsOFL23FmWKx2O41tHlJ2Seort8M9eIHOu21L9DUJFd291O/4ckiMQM # 13+KH/Kl5fumM+uEkO9YMyplOddmvygdTd5dCi5y349Gi3CgJH3n4HUl0qnioM/7 # Dy3n8JIvYsBp+8jUsLXo1gSl5P1kLMLwJmP68qgy8z8Xly4bDco1Nb2UKb7qKevO # lMr6L+2/ALbKLZ6OU50erdUrlbgNs0eiQyJAfJ47SQ57RGuqF4pZ09+9yRI2FPZt # UlSn+srsec1ieYyM2e5krVWbNcXaj6FouV7CkbgFXoUZt29xA1HTXsso+8vLgDPu # g8vvuw== # =Up0b # -----END PGP SIGNATURE----- # gpg: Signature made Tue 24 Jan 2023 02:01:17 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-20230123' of https://gitlab.com/rth7680/qemu: tcg/loongarch64: Reorg goto_tb implementation tcg/loongarch64: Use tcg_pcrel_diff in tcg_out_ldst tcg/loongarch64: Implement movcond tcg/loongarch64: Improve setcond expansion tcg/loongarch64: Introduce tcg_out_addi tcg/loongarch64: Update tcg-insn-defs.c.inc tcg/loongarch64: Optimize immediate loading target/loongarch: Disassemble pcadd* addresses target/loongarch: Disassemble jirl properly target/loongarch: Enable the disassembler for host tcg tcg: Mark tcg helpers noinline to avoid an issue with LTO linux-user: Implment host/ppc/host-signal.h common-user/host/ppc: Implement safe-syscall.inc.S tcg/arm: Use register pair allocation for qemu_{ld,st}_i64 tcg: Avoid recursion in tcg_gen_mulu2_i32 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-02-02Merge tag 'pull-jan-omnibus-020223-1' of https://gitlab.com/stsquad/qemu ↵Peter Maydell
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 # -----BEGIN PGP SIGNATURE----- # # iQEzBAABCgAdFiEEZoWumedRZ7yvyN81+9DbCVqeKkQFAmPb3fgACgkQ+9DbCVqe # KkQbXAf9Eoc+PdNvafbqzH/blPjvd9ve8pJ+GcPDukNXwxP8OF/jFEJUQ1E7l9O7 # y0qV4akKCdIqVice4R5bK2CAq44Y3aut8SDf56C8E3Riha2zA2RbQWOv/zCvA3OP # LFF+OaXZyg4JTR48HUKzh9ei2bd1+ccBSUe+xlRi59XaV5K8+5bmcZj10QKUR0lD # 0HC5auEWWpayvd5D7Da15C7+oVY3LMCFxSdpHwbuIPPan/TRo5yqMI6ChYDKB8QD # gdwMCL8znj2ADCTBftyBDYDAtjKVyLQidf7KdQHiSF+nmXYopS6SbsPCOMtJqCMH # tXcKAIxs/MEntPrWTKTdtdnzotJVKw== # =AtfN # -----END PGP SIGNATURE----- # 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>
2023-02-02Merge tag 'pull-request-2023-01-31' of https://gitlab.com/thuth/qemu into ↵Peter Maydell
staging * qtest improvements * Remove the deprecated OTP config of sifive_u * Add libfdt to some of our CI jobs that were still missing it * Use __builtin_bswap() everywhere (all compiler versions support it now) * Deprecate the HAXM accelerator * Document PCI devices handling on s390x * Make Audiodev introspectable * Improve the runtime of some CI jobs # -----BEGIN PGP SIGNATURE----- # # iQJFBAABCAAvFiEEJ7iIR+7gJQEY8+q5LtnXdP5wLbUFAmPY59YRHHRodXRoQHJl # ZGhhdC5jb20ACgkQLtnXdP5wLbXzhxAAmoq2j2sbAf2Vr9tz6Ez2p9oKNYnzUEWb # NGXdvQMcVFKIdjvSYt5ozLC53OFIzuS74X7oHKbdLvGzez3nMCijZIbzN6vNnvd9 # HNGum4blNwHEfQcY9hr9y30Iurc7CQu6VtwGF+XXdzQZDbPz1Z4AWvtPTLcTbkxa # PskYJfFvow/oaTHDA/7t+90cxCOixKvQMKXL5ATCtMRGnjlbOAEoPbXUB+yM24mk # 9qp1L/8h8pvXfeXlFj+KETmu+eE5ETEOQtqc2KhQqqze2+VMKYxSX2H+sNkJBPDP # En8Mpy+fEdefu8Jcu+M2kMLhf1f3LVf9uARhLZY4/xmOYFg+F3xzwpshnH1bs+Kw # IzWP84uHjE77jSy/wKvYiCx2hdCDwO0G+zym67D1fPzvjzKzUNprV4OIuRzTWah3 # 6Zli5uuaLrBNjR8SJB1HDmLGKDFgToH9dzfLPtDmW8UPJGkAGcBbPKktLTe5y/4E # del99NqpTx5SAqMmbSMRPZ/vZ7ITdfB0Av3a0GdO8j7eSPb9BOsoZOVD2/iUzab/ # P0dBuNqMM8fwywVKqcK+0CJ/npWIJvOqqlwSDqhY1A78G/uRuapOqUwsB/LWRFv5 # /1VvHfA2rv4l9o66N5jssS5/D1v5p/UBB6JvlTUvuoJMFTXa9de9XFxYxfkyiaAz # LJl+Dh+aeWk= # =uq7y # -----END PGP SIGNATURE----- # gpg: Signature made Tue 31 Jan 2023 10:05:10 GMT # gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5 # gpg: issuer "thuth@redhat.com" # gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full] # gpg: aka "Thomas Huth <thuth@redhat.com>" [full] # gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full] # gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown] # Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5 * tag 'pull-request-2023-01-31' of https://gitlab.com/thuth/qemu: (27 commits) gitlab-ci.d/buildtest: Merge the --without-default-* jobs tests/qtest/display-vga-test: Add proper checks if a device is available gitlab-ci.d/buildtest: Remove ppc-softmmu from the clang-system job qapi, audio: Make introspection reflect build configuration more closely qapi, audio: add query-audiodev command docs/s390x/pcidevices: document pci devices on s390x tests/qtest/boot-serial-test: Constify tests[] array tests/qtest/vnc-display-test: Disable on Darwin tests/qtest/vnc-display-test: Use the 'none' machine tests/qtest/vnc-display-test: Suppress build warnings on Windows tests/tcg: Do not build/run TCG tests if TCG is disabled docs/about/deprecated: Mark HAXM in QEMU as deprecated MAINTAINERS: Abort HAXM maintenance qemu/bswap: Use compiler __builtin_bswap() on NetBSD qemu/bswap: Use compiler __builtin_bswap() on FreeBSD qemu/bswap: Use compiler __builtin_bswap() on Haiku qemu/bswap: Remove <byteswap.h> dependency qemu/bswap: Replace bswapXXs() by compiler __builtin_bswap() qemu/bswap: Replace bswapXX() by compiler __builtin_bswap() tests/docker/dockerfiles: Add libfdt to the i386 and to the riscv64 container ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-02-02gitlab: cut even more from cross-win64-system buildAlex Bennée
This keeps hitting the time limits so cut even more from the list. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2023-02-02plugins: Iterate on cb_lists in qemu_plugin_user_exitRichard Henderson
Rather than iterate over all plugins for all events, iterate over plugins that have registered a given event. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230117035701.168514-4-richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-36-alex.bennee@linaro.org>
2023-02-02cpu-exec: assert that plugin_mem_cbs is NULL after executionEmilio Cota
Fixes: #1381 Signed-off-by: Emilio Cota <cota@braap.org> Message-Id: <20230108165107.62488-1-cota@braap.org> [AJB: manually applied follow-up fix] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230124180127.1881110-35-alex.bennee@linaro.org>
2023-02-02tcg: exclude non-memory effecting helpers from instrumentationEmilio Cota
There are actually a whole bunch of helpers that don't affect memory that we shouldn't instrument. They are helpfully identified by the TCG_CALL_NO_SIDE_EFFECTS flag which marks out lookup_tb_ptr as well as a lot of the maths helpers. To avoid the string compare we introduce a new flag for plugin internals so we skip that too. Related: #1381 Signed-off-by: Emilio Cota <cota@braap.org> Message-Id: <20230108164731.61469-4-cota@braap.org> [AJB: updated to skip all no SE plugins, add flag for plugin helper] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230124180127.1881110-34-alex.bennee@linaro.org>
2023-02-02translator: always pair plugin_gen_insn_{start, end} callsEmilio Cota
Related: #1381 Signed-off-by: Emilio Cota <cota@braap.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230108164731.61469-3-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-33-alex.bennee@linaro.org>
2023-02-02plugins: fix optimization in plugin_gen_disable_mem_helpersEmilio Cota
We were mistakenly checking tcg_ctx->plugin_insn as a canary to know whether the TB had emitted helpers that might have accessed memory. The problem is that tcg_ctx->plugin_insn gets updated on every instruction in the TB, which results in us wrongly performing the optimization (i.e. not clearing cpu->plugin_mem_cbs) way too often, since it's not rare that the last instruction in the TB doesn't use helpers. Fix it by tracking a per-TB canary. While at it, expand documentation. Related: #1381 Signed-off-by: Emilio Cota <cota@braap.org> Message-Id: <20230108164731.61469-2-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-32-alex.bennee@linaro.org>
2023-02-02plugins: make qemu_plugin_user_exit's locking order consistent with fork_start'sEmilio Cota
To fix potential deadlocks as reported by tsan. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Emilio Cota <cota@braap.org> Message-Id: <20230111151628.320011-6-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-31-alex.bennee@linaro.org>
2023-02-02util/qht: use striped locks under TSANEmilio Cota
Fixes this tsan crash, easy to reproduce with any large enough program: $ tests/unit/test-qht 1..2 ThreadSanitizer: CHECK failed: sanitizer_deadlock_detector.h:67 "((n_all_locks_)) < (((sizeof(all_locks_with_contexts_)/sizeof((all_locks_with_contexts_)[0]))))" (0x40, 0x40) (tid=1821568) #0 __tsan::CheckUnwind() ../../../../src/libsanitizer/tsan/tsan_rtl.cpp:353 (libtsan.so.2+0x90034) #1 __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) ../../../../src/libsanitizer/sanitizer_common/sanitizer_termination.cpp:86 (libtsan.so.2+0xca555) #2 __sanitizer::DeadlockDetectorTLS<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >::addLock(unsigned long, unsigned long, unsigned int) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector.h:67 (libtsan.so.2+0xb3616) #3 __sanitizer::DeadlockDetectorTLS<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >::addLock(unsigned long, unsigned long, unsigned int) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector.h:59 (libtsan.so.2+0xb3616) #4 __sanitizer::DeadlockDetector<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >::onLockAfter(__sanitizer::DeadlockDetectorTLS<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >*, unsigned long, unsigned int) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector.h:216 (libtsan.so.2+0xb3616) #5 __sanitizer::DD::MutexAfterLock(__sanitizer::DDCallback*, __sanitizer::DDMutex*, bool, bool) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector1.cpp:169 (libtsan.so.2+0xb3616) #6 __tsan::MutexPostLock(__tsan::ThreadState*, unsigned long, unsigned long, unsigned int, int) ../../../../src/libsanitizer/tsan/tsan_rtl_mutex.cpp:200 (libtsan.so.2+0xa3382) #7 __tsan_mutex_post_lock ../../../../src/libsanitizer/tsan/tsan_interface_ann.cpp:384 (libtsan.so.2+0x76bc3) #8 qemu_spin_lock /home/cota/src/qemu/include/qemu/thread.h:259 (test-qht+0x44a97) #9 qht_map_lock_buckets ../util/qht.c:253 (test-qht+0x44a97) #10 do_qht_iter ../util/qht.c:809 (test-qht+0x45f33) #11 qht_iter ../util/qht.c:821 (test-qht+0x45f33) #12 iter_check ../tests/unit/test-qht.c:121 (test-qht+0xe473) #13 qht_do_test ../tests/unit/test-qht.c:202 (test-qht+0xe473) #14 qht_test ../tests/unit/test-qht.c:240 (test-qht+0xe7c1) #15 test_default ../tests/unit/test-qht.c:246 (test-qht+0xe828) #16 <null> <null> (libglib-2.0.so.0+0x7daed) #17 <null> <null> (libglib-2.0.so.0+0x7d80a) #18 <null> <null> (libglib-2.0.so.0+0x7d80a) #19 g_test_run_suite <null> (libglib-2.0.so.0+0x7dfe9) #20 g_test_run <null> (libglib-2.0.so.0+0x7e055) #21 main ../tests/unit/test-qht.c:259 (test-qht+0xd2c6) #22 __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 (libc.so.6+0x29d8f) #23 __libc_start_main_impl ../csu/libc-start.c:392 (libc.so.6+0x29e3f) #24 _start <null> (test-qht+0xdb44) Signed-off-by: Emilio Cota <cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230111151628.320011-5-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-30-alex.bennee@linaro.org>
2023-02-02thread: de-const qemu_spin_destroyEmilio Cota
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio Cota <cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230111151628.320011-4-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-29-alex.bennee@linaro.org>
2023-02-02util/qht: add missing atomic_set(hashes[i])Emilio Cota
We forgot to add this one in "a890643958 util/qht: atomically set b->hashes". Detected with tsan. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio Cota <cota@braap.org> Message-Id: <20230111151628.320011-3-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-28-alex.bennee@linaro.org>
2023-02-02cpu: free cpu->tb_jmp_cache with RCUEmilio Cota
Fixes the appended use-after-free. The root cause is that during tb invalidation we use CPU_FOREACH, and therefore to safely free a vCPU we must wait for an RCU grace period to elapse. $ x86_64-linux-user/qemu-x86_64 tests/tcg/x86_64-linux-user/munmap-pthread ================================================================= ==1800604==ERROR: AddressSanitizer: heap-use-after-free on address 0x62d0005f7418 at pc 0x5593da6704eb bp 0x7f4961a7ac70 sp 0x7f4961a7ac60 READ of size 8 at 0x62d0005f7418 thread T2 #0 0x5593da6704ea in tb_jmp_cache_inval_tb ../accel/tcg/tb-maint.c:244 #1 0x5593da6704ea in do_tb_phys_invalidate ../accel/tcg/tb-maint.c:290 #2 0x5593da670631 in tb_phys_invalidate__locked ../accel/tcg/tb-maint.c:306 #3 0x5593da670631 in tb_invalidate_phys_page_range__locked ../accel/tcg/tb-maint.c:542 #4 0x5593da67106d in tb_invalidate_phys_range ../accel/tcg/tb-maint.c:614 #5 0x5593da6a64d4 in target_munmap ../linux-user/mmap.c:766 #6 0x5593da6dba05 in do_syscall1 ../linux-user/syscall.c:10105 #7 0x5593da6f564c in do_syscall ../linux-user/syscall.c:13329 #8 0x5593da49e80c in cpu_loop ../linux-user/x86_64/../i386/cpu_loop.c:233 #9 0x5593da6be28c in clone_func ../linux-user/syscall.c:6633 #10 0x7f496231cb42 in start_thread nptl/pthread_create.c:442 #11 0x7f49623ae9ff (/lib/x86_64-linux-gnu/libc.so.6+0x1269ff) 0x62d0005f7418 is located 28696 bytes inside of 32768-byte region [0x62d0005f0400,0x62d0005f8400) freed by thread T148 here: #0 0x7f49627b6460 in __interceptor_free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52 #1 0x5593da5ac057 in cpu_exec_unrealizefn ../cpu.c:180 #2 0x5593da81f851 (/home/cota/src/qemu/build/qemu-x86_64+0x484851) Signed-off-by: Emilio Cota <cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230111151628.320011-2-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-27-alex.bennee@linaro.org>
2023-02-02tests/tcg: add memory-sve test for aarch64Alex Bennée
This will be helpful in debugging problems with tracking SVE memory accesses via the TCG plugins system. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Cc: Robert Henry <robhenry@microsoft.com> Cc: Aaron Lindsay <aaron@os.amperecomputing.com> Message-Id: <20230124180127.1881110-26-alex.bennee@linaro.org>
2023-02-02semihosting: add O_BINARY flag in host_open for NT compatibilityEvgeny Iakovlev
Windows open(2) implementation opens files in text mode by default and needs a Windows-only O_BINARY flag to open files as binary. QEMU already knows about that flag in osdep and it is defined to 0 on non-Windows, so we can just add it to the host_flags for better compatibility. Signed-off-by: Evgeny Iakovlev <eiakovlev@linux.microsoft.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-Id: <20230106102018.20520-1-eiakovlev@linux.microsoft.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-25-alex.bennee@linaro.org>
2023-02-02semihosting: Write back semihosting data before completion callbackKeith Packard
'lock_user' allocates a host buffer to shadow a target buffer, 'unlock_user' copies that host buffer back to the target and frees the host memory. If the completion function uses the target buffer, it must be called after unlock_user to ensure the data are present. This caused the arm-compatible TARGET_SYS_READC to fail as the completion function, common_semi_readc_cb, pulled data from the target buffer which would not have been gotten the console data. I decided to fix all instances of this pattern instead of just the console_read function to make things consistent and potentially fix bugs in other cases. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20221012014822.1242170-1-keithp@keithp.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230124180127.1881110-24-alex.bennee@linaro.org>
2023-02-02docs: add an introduction to the system docsAlex Bennée
Drop the frankly misleading quickstart section for a more rounded introduction section. This new section gives an overview of the accelerators as well as a high level introduction to some of the key features of the emulator. We also expand on a general form for a QEMU command line with a hopefully not too scary worked example of what this looks like. Acked-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com> Message-Id: <20230124180127.1881110-23-alex.bennee@linaro.org>
2023-02-02semihosting: add semihosting section to the docsAlex Bennée
The main reason to do this is to document our O_BINARY implementation decision somewhere. However I've also moved some of the implementation details out of qemu-options and added links between the two. As a bonus I've highlighted the scary warnings about host access with the appropriate RST tags. Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-22-alex.bennee@linaro.org>
2023-02-02docs: add a new section to outline emulation supportAlex Bennée
This affects both system and user mode emulation so we should probably list it up front. Acked-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-21-alex.bennee@linaro.org>
2023-02-02docs: add hotlinks to about preface textAlex Bennée
Make it easier to navigate the documentation. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230124180127.1881110-20-alex.bennee@linaro.org>
2023-02-02MAINTAINERS: Fix the entry for tests/tcg/nios2Thomas Huth
tests/tcg/nios2/Makefile.target has accidentally been added to the Microblaze section. Move it into the correct nios2 section instead - and while we're at it, it should also cover the whole folder, and not only the Makefile. Fixes: 67f80eb4d0 ("tests/tcg: enable debian-nios2-cross for test building") Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230119130326.2030297-1-thuth@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-19-alex.bennee@linaro.org>
2023-02-02gitlab: wrap up test results for custom runnersAlex Bennée
Instead of spewing the whole log to stdout lets just define them as build artefacts so we can examine them later. Where we are running check-tcg run it first as those tests are yet to be integrated into meson. To avoid confusion we don't run multiple check-tcg tests at once. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-18-alex.bennee@linaro.org>
2023-02-02tests/tcg: Use SIGKILL for timeoutRichard Henderson
linux-user blocks all signals while attempting to handle guest signals (e.g. ABRT), which means that the default TERM sent by timeout has no effect -- KILL instead. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230117035701.168514-2-richard.henderson@linaro.org> [AJB: expanded commit message from cover letter] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230124180127.1881110-17-alex.bennee@linaro.org>
2023-02-02tests/tcg: skip the vma-pthread test on CIAlex Bennée
We are getting a lot of failures that are not related to changes so this could be a flaky test. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-16-alex.bennee@linaro.org>
2023-02-02tests/docker: drop debian-tricore-cross's partial statusAlex Bennée
This image is perfectly capable of building QEMU, and indeed we do that on gitlab. Drop the DOCKER_PARTIAL_IMAGES setting so we can also test the gitlab build locally. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-15-alex.bennee@linaro.org>
2023-02-02tests/docker: Install flex in debian-tricore-crossPhilippe Mathieu-Daudé
When flex is not available, binutils sources default to the 'missing' script, but the current script available is not in the format expected by the 'configure' script: $ ./configure ... /usr/src/binutils/missing: Unknown `--run' option Try `/usr/src/binutils/missing --help' for more information configure: WARNING: `missing' script is too old or missing ... checking for bison... bison -y checking for flex... no checking for lex... no checking for flex... /usr/src/binutils/missing flex $ make ... updating ldgram.h gcc -DHAVE_CONFIG_H -I. -I. -I. -D_GNU_SOURCE -I. -I. -I../bfd -I./../bfd -I./../include -I./../intl -I../intl -w -DLOCALEDIR="\"/usr/local/share/locale\"" -W -Wall -Wstrict-prototypes -Wmissing-prototypes -w -c `test -f 'ldgram.c' || echo './'`ldgram.c `test -f ldlex.l || echo './'`ldlex.l /bin/sh: 1: ldlex.l: not found make[3]: *** [Makefile:662: ldlex.c] Error 127 make[3]: Leaving directory '/usr/src/binutils/ld' make[2]: *** [Makefile:799: all-recursive] Error 1 By pass the 'missing' script use by directly installing 'flex' in the container. Reported-by: Peter Maydell <peter.maydell@linaro.org> Suggested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230112155643.7408-1-philmd@linaro.org> Reviewed-by: Bastian-Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-14-alex.bennee@linaro.org>
2023-02-02lcitool: drop texinfo from QEMU project/dependenciesMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20230110132700.833690-9-marcandre.lureau@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-13-alex.bennee@linaro.org>
2023-02-02lcitool: drop perl from QEMU project/dependenciesMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230110132700.833690-8-marcandre.lureau@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-12-alex.bennee@linaro.org>
2023-02-02Update lcitool and fedora to 37Marc-André Lureau
Fedora 35 is EOL. Update to upstream lcitool, that dropped f35 and added f37. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230110132700.833690-7-marcandre.lureau@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-11-alex.bennee@linaro.org>
2023-02-02gitlab: add lsan suppression file to workaround tcmalloc issuesAlex Bennée
The up-coming upgrade to Fedora 37 will bring in libtcmalloc as a dependency of libglusterfs which confuses our fuzz run. Rather than disable the build lets use LSAN's suppression mechanism to prevent the job from failing. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Cc: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20230124180127.1881110-10-alex.bennee@linaro.org>
2023-02-02docs: drop texinfo optionsMarc-André Lureau
It looks like this is no longer wanted, we only build the html output. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20230110132700.833690-6-marcandre.lureau@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-9-alex.bennee@linaro.org>
2023-02-02meson: replace Perl usage with PythonMarc-André Lureau
Let's try to remove Perl usage during build time. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20230110132700.833690-5-marcandre.lureau@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-8-alex.bennee@linaro.org>
2023-02-02.gitlab-ci.d/windows: do not disable openglMarc-André Lureau
The previous patch should have fixed shader compilation. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230110132700.833690-3-marcandre.lureau@redhat.com> [AJB: tweak commit message] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-7-alex.bennee@linaro.org>
2023-02-02build-sys: fix crlf-ending C codeMarc-André Lureau
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>
2023-02-02tests/unit: drop hacky race avoidance in test-io-channel-commandAlex Bennée
We don't need to play timing games to ensure one socat wins over the other, just create the fifo they both can use before spawning the processes. However in the process we need to disable two tests for Windows platforms as we don't have an abstraction for mkfifo(). Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1403 Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20230124180127.1881110-5-alex.bennee@linaro.org>
2023-02-02gitlab: just use plain --cc=clang for custom runner buildAlex Bennée
I think this was because older Ubuntu's didn't alias clang to whatever the latest version was. They do now so lets use that and not break. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-4-alex.bennee@linaro.org>
2023-02-02gitlab: add FF_SCRIPT_SECTIONS for timingsMark Cave-Ayland
Suggested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20230124180127.1881110-3-alex.bennee@linaro.org>
2023-02-02scripts/ci: update gitlab-runner playbook to use latest runnerAlex Bennée
We were using quite and old runner on our machines and running into issues with stalling jobs. Gitlab in the meantime now reliably provide the latest packaged versions of the runner under a stable URL. This update: - creates a per-arch subdir for builds - switches from binary tarballs to deb packages - re-uses the same binary for the secondary runner - updates distro check for second to 22.04 Note this script isn't fully idempotent as we end up accumulating runners especially during testing. However we also want to be able to run twice with different GitLab keys (e.g. project and personal) so I think we just have to be mindful of that during testing. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230124180127.1881110-2-alex.bennee@linaro.org>
2023-02-02Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu ↵Peter Maydell
into staging virtio,pc,pci: features, cleanups, fixes lots of fixes, cleanups Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # -----BEGIN PGP SIGNATURE----- # # iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmPYJdcPHG1zdEByZWRo # YXQuY29tAAoJECgfDbjSjVRp08cIAMYq0y++RtepDpLnPjybR0v1G4cPgZS4DXFz # 8uc/2nkAHe1Q2lJNmk9p3YjLLloSO8yC1bmuuhUpmry9BJokYzY1r7rfXc8jd/Za # z2FjC9LuYX+sk26NTGUxPq9mhT0p14HXyoxpnQlCweuVL0DJg1Tip6HI4oOG2LJj # Au6Rl9keMQNqf9qVtsR1djO+8nO4ywbx6D9d2CYSKkQ3pK3uLvNds9vqU16x8wq7 # mNPqV8BIoDgW4zEOL478h6rJcL7pDQo6kAT1wfg7q1JcMMHJfW36VcBeFfskfJFg # Pej3TEP2rg1LsGfh5XVw5Rp6FZ4K2TEyTK9cPZ9F7CzKdUrgBHU= # =S0zd # -----END PGP SIGNATURE----- # gpg: Signature made Mon 30 Jan 2023 20:17:27 GMT # gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469 # gpg: issuer "mst@redhat.com" # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full] # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full] # Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67 # Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469 * tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (56 commits) docs/pcie.txt: Replace ioh3420 with pcie-root-port Revert "vhost-user: Introduce nested event loop in vhost_user_read()" Revert "vhost-user: Monitor slave channel in vhost_user_read()" tests/qtest/bios-tables-test: Make the test less verbose by default hw: Use TYPE_PCI_BUS definition where appropriate vhost-user: Skip unnecessary duplicated VHOST_USER_ADD/REM_MEM_REG requests tests: acpi: update expected blobs pcihp: generate populated non-hotpluggble slot descriptions on non-hotplug path tests: acpi: whitelist DSDT before moving non-hotpluggble slots description from hotplug path tests: acpi: update expected blobs pcihp: acpi: ignore coldplugged bridges when composing hotpluggable slots tests: acpi: whitelist DSDT blobs before removing dynamic _DSM on coldplugged bridges tests: acpi: update expected blobs pcihp: acpi: decouple hotplug and generic slots description tests: acpi: whitelist DSDT before decoupling PCI hotplug code from basic slots description pcihp: isolate rule whether slot should be described in DSDT pci: make sure pci_bus_is_express() won't error out with "discards ‘const’ qualifier" pcihp: make bridge describe itself using AcpiDevAmlIfClass:build_dev_aml pci: acpi: wire up AcpiDevAmlIf interface to generic bridge x86: pcihp: acpi: prepare slot ignore rule to work with self describing bridges ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-02-01Merge tag 'python-pull-request' of https://gitlab.com/jsnow/qemu into stagingPeter Maydell
Python Bits and pieces, kibbles'n'bits # -----BEGIN PGP SIGNATURE----- # # iQIzBAABCAAdFiEE+ber27ys35W+dsvQfe+BBqr8OQ4FAmPQlMIACgkQfe+BBqr8 # OQ5RIxAAqaG8Dx63CXa8WHMsGWc0CKTOcwTcRDw92GT3qhVkebZiNmNlZwckaU/c # CkVunJnU5T6T2qkploysUXwdlQ+XsY4fQlACNciZeffmT2E4siNQ/4H1uPB4xca6 # 8Sgmg2VH7OF+EWwuBihY1pbe7g+sOJg9w9isRduBnLGrLbOrewGIJBNbiVzFlz5W # 30RdvfLoUUak5qTlMT/6yl98r6fkkDmfPX653iYmpA/H/Ah+17ZJXB2XNigkqBdD # Cp8OxtFceKQdZOqNiADJRzT3Gore4lBkPnULKwct/5U0B/tUiBdZ2YDJW8EObUMY # zFE7giE5mCnyFSmfBmjKu8yS8zJm9NooYEjunTcodop/FDb96c3sh8376ZLamTii # /p5WSwfo4a6DXPUTx0aiCkqpeCdPncRgwKc5TvqyKLKxQHbfjt6UZrcL6iYbe6O6 # ltBcdvfdzL41TNjS678QqiGuYkADVa/nhig3ano4msx/Tf5e0O8eMoK9bDbVS9KF # QuONtOcut1YhnAHJp4oYN2Nimtr0t8j07iOOfc4X3+WwdbMCfR+toDM4wWVJ3u/O # 8Phy8hinfndMXdP9Q4eeFAiJ1zuD/XkpaKoDe0gHcEvp3zMEXmHiEOdv4hFeWTQB # ivU3oM/j2uVcHU4CSxra3B54vfLc1gudJ2yLPvhwPKoIRbJ/kbc= # =36NA # -----END PGP SIGNATURE----- # gpg: Signature made Wed 25 Jan 2023 02:32:34 GMT # gpg: using RSA key F9B7ABDBBCACDF95BE76CBD07DEF8106AAFC390E # gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" [full] # Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB # Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E * tag 'python-pull-request' of https://gitlab.com/jsnow/qemu: python/qemu/machine: use socketpair() for QMP by default python/qmp/legacy: make QEMUMonitorProtocol accept a socket python/qmp/protocol: add open_with_socket() python/qmp: increase read buffer size python/machine: Fix AF_UNIX path too long on macOS python: QEMUMachine: enable qmp accept timeout by default Fix some typos Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-31gitlab-ci.d/buildtest: Merge the --without-default-* jobsThomas Huth
Let's safe some CI minutes by merging these two jobs. We can now also drop "--disable-capstone" since the capstone submodule has been removed a while ago. We should rather test --disable-fdt now to check a compilation without the "dtc" submodule (for this we have to drop i386-softmmu from the target list unfortunately). Additionally, the qtests with s390x and sh4 are not read for "--without-default-devices" yet, so we can only test mips64 and avr here now. Message-Id: <20230130104446.1286773-5-thuth@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-31tests/qtest/display-vga-test: Add proper checks if a device is availableThomas Huth
display-vga-test currently tries to guess the usable VGA devices according to the target architecture that is used for the test. This of course does not work if QEMU has been built with the "--without-default-devices" configure switch. To fix this, use the qtest_has_device() function for the decision instead. This way we can also consolidate most of the test functions into one single function (that takes a parameter with the device name now), except for the multihead test that tries to instantiate two devices and thus is a little bit different. Message-Id: <20230130104446.1286773-4-thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-31gitlab-ci.d/buildtest: Remove ppc-softmmu from the clang-system jobThomas Huth
We are also compile-testing ppc64-softmmu with clang in the "tsan-build" job, and ppc64-softmmu covers pretty much the same code as ppc-softmmu, so we should not lose much test coverage here by removing ppc-softmmu from the "clang-system" job. Message-Id: <20230130104446.1286773-2-thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-30qapi, audio: Make introspection reflect build configuration more closelyDaniel P. Berrangé
Currently the -audiodev accepts any audiodev type regardless of what is built in to QEMU. An error only occurs later at runtime when a sound device tries to use the audio backend. With this change QEMU will immediately reject -audiodev args that are not compiled into the binary. The QMP schema will also be introspectable to identify what is compiled in. This also helps to avoid compiling code that is not required in the binary. Note: When building the audiodevs as modules, the patch only compiles out code for modules that we don't build at all. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> [thuth: Rebase, take sndio and dbus devices into account] Message-Id: <20230123083957.20349-3-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-30qapi, audio: add query-audiodev commandDaniel P. Berrangé
Way back in QEMU 4.0, the -audiodev command line option was introduced for configuring audio backends. This CLI option does not use QemuOpts so it is not visible for introspection in 'query-command-line-options', instead using the QAPI Audiodev type. Unfortunately there is also no QMP command that uses the Audiodev type, so it is not introspectable with 'query-qmp-schema' either. This introduces a 'query-audiodev' command that simply reflects back the list of configured -audiodev command line options. This alone is maybe not very useful by itself, but it makes Audiodev introspectable via 'query-qmp-schema', so that libvirt (and other upper layer tools) can discover the available audiodevs. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> [thuth: Update for upcoming QEMU v8.0, and use QAPI_LIST_PREPEND] Message-Id: <20230123083957.20349-2-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-30docs/s390x/pcidevices: document pci devices on s390xSebastian Mitterle
Add some documentation about the zpci device and how to use it with pci devices on s390x. Used source: Cornelia Huck's blog post https://people.redhat.com/~cohuck/2018/02/19/notes-on-pci-on-s390x.html Signed-off-by: Sebastian Mitterle <smitterl@redhat.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Message-Id: <20230127123349.55294-1-smitterl@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-28docs/pcie.txt: Replace ioh3420 with pcie-root-portMarcel Apfelbaum
Do not mention ioh3420 in the "how to" doc. The device still works and can be used by already existing setups, but no need to be mentioned. Suggested-by: Andrew Jones <drjones@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20230123174205.683979-1-berrange@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2023-01-28Revert "vhost-user: Introduce nested event loop in vhost_user_read()"Greg Kurz
This reverts commit a7f523c7d114d445c5d83aecdba3efc038e5a692. The nested event loop is broken by design. It's only user was removed. Drop the code as well so that nobody ever tries to use it again. I had to fix a couple of trivial conflicts around return values because of 025faa872bcf ("vhost-user: stick to -errno error return convention"). Signed-off-by: Greg Kurz <groug@kaod.org> Message-Id: <20230119172424.478268-3-groug@kaod.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2023-01-28Revert "vhost-user: Monitor slave channel in vhost_user_read()"Greg Kurz
This reverts commit db8a3772e300c1a656331a92da0785d81667dc81. Motivation : this is breaking vhost-user with DPDK as reported in [0]. Received unexpected msg type. Expected 22 received 40 Fail to update device iotlb Received unexpected msg type. Expected 40 received 22 Received unexpected msg type. Expected 22 received 11 Fail to update device iotlb Received unexpected msg type. Expected 11 received 22 vhost VQ 1 ring restore failed: -71: Protocol error (71) Received unexpected msg type. Expected 22 received 11 Fail to update device iotlb Received unexpected msg type. Expected 11 received 22 vhost VQ 0 ring restore failed: -71: Protocol error (71) unable to start vhost net: 71: falling back on userspace virtio The failing sequence that leads to the first error is : - QEMU sends a VHOST_USER_GET_STATUS (40) request to DPDK on the master socket - QEMU starts a nested event loop in order to wait for the VHOST_USER_GET_STATUS response and to be able to process messages from the slave channel - DPDK sends a couple of legitimate IOTLB miss messages on the slave channel - QEMU processes each IOTLB request and sends VHOST_USER_IOTLB_MSG (22) updates on the master socket - QEMU assumes to receive a response for the latest VHOST_USER_IOTLB_MSG but it gets the response for the VHOST_USER_GET_STATUS instead The subsequent errors have the same root cause : the nested event loop breaks the order by design. It lures QEMU to expect responses to the latest message sent on the master socket to arrive first. Since this was only needed for DAX enablement which is still not merged upstream, just drop the code for now. A working solution will have to be merged later on. Likely protect the master socket with a mutex and service the slave channel with a separate thread, as discussed with Maxime in the mail thread below. [0] https://lore.kernel.org/qemu-devel/43145ede-89dc-280e-b953-6a2b436de395@redhat.com/ Reported-by: Yanghang Liu <yanghliu@redhat.com> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2155173 Signed-off-by: Greg Kurz <groug@kaod.org> Message-Id: <20230119172424.478268-2-groug@kaod.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>
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