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2024-06-21migration: Add direct-io parameterFabiano Rosas1-0/+9
Add the direct-io migration parameter that tells the migration code to use O_DIRECT when opening the migration stream file whenever possible. This is currently only used with the mapped-ram migration that has a clear window guaranteed to perform aligned writes. Acked-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Fabiano Rosas <farosas@suse.de>
2024-06-21monitor: Report errors from monitor_fdset_dup_fd_addFabiano Rosas1-9/+1
I'm keeping the EACCES because callers expect to be able to look at errno. Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Fabiano Rosas <farosas@suse.de>
2024-06-20monitor: Drop monitor_fdset_dup_fd_find/_remove()Peter Xu1-14/+1
Those functions are not needed, one remove function should already work. Clean it up. Here the code doesn't really care about whether we need to keep that dupfd around if close() failed: when that happens something got very wrong, keeping the dup_fd around the fdsets may not help that situation so far. Cc: Dr. David Alan Gilbert <dave@treblig.org> Cc: Markus Armbruster <armbru@redhat.com> Cc: Philippe Mathieu-Daudé <philmd@linaro.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> [add missing return statement, removal during traversal is not safe] Signed-off-by: Fabiano Rosas <farosas@suse.de>
2024-06-19Merge tag 'pull-tcg-20240619' of https://gitlab.com/rth7680/qemu into stagingRichard Henderson2-190/+2
tcg/loongarch64: Support 64- and 256-bit vectors tcg/loongarch64: Fix tcg_out_movi vs some pcrel pointers util/bufferiszero: Split out host include files util/bufferiszero: Add loongarch64 vector acceleration accel/tcg: Fix typo causing tb->page_addr[1] to not be recorded target/sparc: use signed denominator in sdiv helper linux-user: Make TARGET_NR_setgroups affect only the current thread # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmZzRoMdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV9Y7gf/ZUTGjCUdAO7W7J5e # Z3JLUNOfUHO6PxoE05963XJc+APwKiuL6Yo2bnJo6km7WM50CoaX9/7L9CXD7STg # s3eUJ2p7FfvOADZgO373nqRrB/2mhvoywhDbVJBl+NcRvRUDW8rMqrlSKIAwDIsC # kwwTWlCfpBSlUgm/c6yCVmt815+sGUPD2k/p+pIzAVUG6fGYAosC2fwPzPajiDGX # Q+obV1fryKq2SRR2dMnhmPRtr3pQBBkISLuTX6xNM2+CYhYqhBrAlQaOEGhp7Dx3 # ucKjvQFpHgPOSdQxb/HaDv81A20ZUQaydiNNmuKQcTtMx3MsQFR8NyVjH7L+fbS8 # JokjaQ== # =yVKz # -----END PGP SIGNATURE----- # gpg: Signature made Wed 19 Jun 2024 01:58:43 PM PDT # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate] * tag 'pull-tcg-20240619' of https://gitlab.com/rth7680/qemu: (24 commits) tcg/loongarch64: Fix tcg_out_movi vs some pcrel pointers target/sparc: use signed denominator in sdiv helper linux-user: Make TARGET_NR_setgroups affect only the current thread accel/tcg: Fix typo causing tb->page_addr[1] to not be recorded util/bufferiszero: Add loongarch64 vector acceleration util/bufferiszero: Split out host include files tcg/loongarch64: Enable v256 with LASX tcg/loongarch64: Support LASX in tcg_out_vec_op tcg/loongarch64: Split out vdvjukN in tcg_out_vec_op tcg/loongarch64: Remove temp_vec from tcg_out_vec_op tcg/loongarch64: Support LASX in tcg_out_{mov,ld,st} tcg/loongarch64: Split out vdvjvk in tcg_out_vec_op tcg/loongarch64: Support LASX in tcg_out_addsub_vec tcg/loongarch64: Simplify tcg_out_addsub_vec tcg/loongarch64: Support LASX in tcg_out_dupi_vec tcg/loongarch64: Use tcg_out_dup_vec in tcg_out_dupi_vec tcg/loongarch64: Support LASX in tcg_out_dupm_vec tcg/loongarch64: Support LASX in tcg_out_dup_vec tcg/loongarch64: Simplify tcg_out_dup_vec util/loongarch64: Detect LASX vector support ... Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-06-19util/bufferiszero: Split out host include filesRichard Henderson1-190/+1
Split out host/bufferiszero.h.inc for x86, aarch64 and generic in order to avoid an overlong ifdef ladder. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-06-19util/loongarch64: Detect LASX vector supportRichard Henderson1-0/+1
Reviewed-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-06-19util/readline: Add C-u shortcutManos Pitsidianakis1-0/+12
Add support for the unix-line-discard readline action, which erases from the cursor position up to the beginning of the line. The default binding, C-u, was chosen. This is useful to quickly erase command input while working on the monitor interface. Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-ID: <6772067e1c0d4b1c5310e5446e9e3e1c6b3b5bc0.1718265822.git.manos.pitsidianakis@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-06-19util/readline: Add C-n, C-p shortcutsManos Pitsidianakis1-0/+8
C-n and C-p are the default bindings for readline's next-history and previous-history respectively. They have the same functionality as the Down and Up arrow keys. Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-ID: <9876594132d1f2e7210ab3f7ca01a82f95206447.1718265822.git.manos.pitsidianakis@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-06-19util/readline: Fix lints for readline_handle_byteManos Pitsidianakis1-4/+11
While they do not give warnings under our current buildsystem configuration, my clang's language server daemon was complaining about missing default: labels in switch statements. While at it, add /* fallthrough */ annotations where appropriate. This is a purely style and not functional change. Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-ID: <16f745ac7f5fef74498709ffd98857e76edff6aa.1718265822.git.manos.pitsidianakis@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-06-08Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into stagingRichard Henderson1-2/+7
* scsi-disk: Don't silently truncate serial number * backends/hostmem: Report error on unavailable qemu_madvise() features or unaligned memory sizes * target/i386: fixes and documentation for INHIBIT_IRQ/TF/RF and debugging * i386/hvf: Adds support for INVTSC cpuid bit * i386/hvf: Fixes for dirty memory tracking * i386/hvf: Use hv_vcpu_interrupt() and hv_vcpu_run_until() * hvf: Cleanups * stubs: fixes for --disable-system build * i386/kvm: support for FRED * i386/kvm: fix MCE handling on AMD hosts # -----BEGIN PGP SIGNATURE----- # # iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmZkF2oUHHBib256aW5p # QHJlZGhhdC5jb20ACgkQv/vSX3jHroPNlQf+N9y6Eh0nMEEQ69twtV8ytglTY+uX # FsogvnsXHNMVubOWmmeItM6kFXTAkR9cmFaL8dqI1Gs03xEQdQXbF1KejJZOAZVl # RQMOW8Fg2Afr+0lwqCXHvhsmZ4hr5yUkRndyucA/E9AO2uGrtgwsWGDBGaHJOZIA # lAsEMOZgKjXHZnefXjhMrvpk/QNovjEV6f1RHX3oKZjKSI5/G4IqGSmwNYToot8p # 2fgs4Qti4+1gNyM2oBLq7cCMjMS61tSxOMH4uqVoIisjyckPlAFRvc+DXtKsUAAs # 9AgM++pNgpB0IXv67czRUNdRoK7OI8I0ULhI4qHXi6Yg2QYAHqpQ6WL4Lg== # =RP7U # -----END PGP SIGNATURE----- # gpg: Signature made Sat 08 Jun 2024 01:33:46 AM PDT # 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] * tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (42 commits) python: mkvenv: remove ensure command Revert "python: use vendored tomli" i386: Add support for overflow recovery i386: Add support for SUCCOR feature i386: Fix MCE support for AMD hosts docs: i386: pc: Avoid mentioning limit of maximum vCPUs target/i386: Add get/set/migrate support for FRED MSRs target/i386: enumerate VMX nested-exception support vmxcap: add support for VMX FRED controls target/i386: mark CR4.FRED not reserved target/i386: add support for FRED in CPUID enumeration hvf: Makes assert_hvf_ok report failed expression i386/hvf: Updates API usage to use modern vCPU run function i386/hvf: In kick_vcpu use hv_vcpu_interrupt to force exit i386/hvf: Fixes dirty memory tracking by page granularity RX->RWX change hvf: Consistent types for vCPU handles i386/hvf: Fixes some compilation warnings i386/hvf: Adds support for INVTSC cpuid bit stubs/meson: Fix qemuutil build when --disable-system scsi-disk: Don't silently truncate serial number ... Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-06-08osdep: Make qemu_madvise() return ENOSYS on unsupported OSesMichal Privoznik1-1/+1
Not every OS is capable of madvise() or posix_madvise() even. In that case, errno should be set to ENOSYS as it reflects the cause better. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Message-ID: <b381c23bd8f413f1453a2c1a66e0979beaf27433.1717584048.git.mprivozn@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-08osdep: Make qemu_madvise() to set errno in all casesMichal Privoznik1-1/+6
The unspoken premise of qemu_madvise() is that errno is set on error. And it is mostly the case except for posix_madvise() which is documented to return either zero (on success) or a positive error number. This means, we must set errno ourselves. And while at it, make the function return a negative value on error, just like other error paths do. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-ID: <af17113e7c1f2cc909ffd36d23f5a411b63b8764.1717584048.git.mprivozn@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-05util/hexdump: Inline g_string_append_printf "%02x"Richard Henderson1-1/+11
Trivial arithmetic can be used for emitting the nibbles, rather than full-blown printf formatting. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20240412073346.458116-6-richard.henderson@linaro.org>
2024-06-05util/hexdump: Add unit_len and block_len to qemu_hexdump_lineRichard Henderson1-9/+21
Generalize the current 1 byte unit and 4 byte blocking within the output. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20240412073346.458116-5-richard.henderson@linaro.org>
2024-06-05util/hexdump: Use a GString for qemu_hexdump_lineRichard Henderson1-11/+16
Allocate a new, or append to an existing GString instead of using a fixed sized buffer. Require the caller to determine the length of the line -- do not bound len here. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240412073346.458116-4-richard.henderson@linaro.org>
2024-06-05Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into stagingRichard Henderson2-8/+4
* virtio-blk: remove SCSI passthrough functionality * require x86-64-v2 baseline ISA * SEV-SNP host support * fix xsave.flat with TCG * fixes for CPUID checks done by TCG # -----BEGIN PGP SIGNATURE----- # # iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmZgKVYUHHBib256aW5p # QHJlZGhhdC5jb20ACgkQv/vSX3jHroPKYgf/QkWrNXdjjD3yAsv5LbJFVTVyCYW3 # b4Iax29kEDy8k9wbzfLxOfIk9jXIjmbOMO5ZN9LFiHK6VJxbXslsMh6hm50M3xKe # 49X1Rvf9YuVA7KZX+dWkEuqLYI6Tlgj3HaCilYWfXrjyo6hY3CxzkPV/ChmaeYlV # Ad4Y8biifoUuuEK8OTeTlcDWLhOHlFXylG3AXqULsUsXp0XhWJ9juXQ60eATv/W4 # eCEH7CSmRhYFu2/rV+IrWFYMnskLRTk1OC1/m6yXGPKOzgnOcthuvQfiUgPkbR/d # llY6Ni5Aaf7+XX3S7Avcyvoq8jXzaaMzOrzL98rxYGDR1sYBYO+4h4ZToA== # =qQeP # -----END PGP SIGNATURE----- # gpg: Signature made Wed 05 Jun 2024 02:01:10 AM PDT # 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] * tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (46 commits) hw/i386: Add support for loading BIOS using guest_memfd hw/i386/sev: Use guest_memfd for legacy ROMs memory: Introduce memory_region_init_ram_guest_memfd() i386/sev: Allow measured direct kernel boot on SNP i386/sev: Reorder struct declarations i386/sev: Extract build_kernel_loader_hashes i386/sev: Enable KVM_HC_MAP_GPA_RANGE hcall for SNP guests i386/kvm: Add KVM_EXIT_HYPERCALL handling for KVM_HC_MAP_GPA_RANGE i386/sev: Invoke launch_updata_data() for SNP class i386/sev: Invoke launch_updata_data() for SEV class hw/i386/sev: Add support to encrypt BIOS when SEV-SNP is enabled i386/sev: Add support for SNP CPUID validation i386/sev: Add support for populating OVMF metadata pages hw/i386/sev: Add function to get SEV metadata from OVMF header i386/sev: Set CPU state to protected once SNP guest payload is finalized i386/sev: Add handling to encrypt/finalize guest launch data i386/sev: Add the SNP launch start context i386/sev: Update query-sev QAPI format to handle SEV-SNP i386/sev: Add a class method to determine KVM VM type for SNP guests i386/sev: Don't return launch measurements for SEV-SNP guests ... Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-06-05host/i386: assume presence of POPCNTPaolo Bonzini1-1/+0
QEMU now requires an x86-64-v2 host, which has the POPCNT instruction. Use it freely in TCG-generated code. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-05host/i386: assume presence of SSSE3Paolo Bonzini1-2/+2
QEMU now requires an x86-64-v2 host, which has SSSE3 instructions (notably, PSHUFB which is used by QEMU's AES implementation). Do not bother checking it. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-05host/i386: assume presence of SSE2Paolo Bonzini2-3/+2
QEMU now requires an x86-64-v2 host, which has SSE2. Use it freely in buffer_is_zero. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-05host/i386: assume presence of CMOVPaolo Bonzini1-1/+0
QEMU now requires an x86-64-v2 host, which always has CMOV. Use it freely in TCG generated code. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-05host/i386: nothing looks at CPUINFO_SSE4Paolo Bonzini1-1/+0
The only user was the SSE4.1 variant of buffer_is_zero, which has been removed; code to compute CPUINFO_SSE4 is dead. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-04util/hexdump: Remove ascii parameter from qemu_hexdump_lineRichard Henderson1-22/+30
Split out asciidump_line as a separate function, local to hexdump.c, for use by qemu_hexdump. Use "%-*s" to generate the alignment between the hex and the ascii, rather than explicit spaces. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20240412073346.458116-3-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-06-04util/hexdump: Remove b parameter from qemu_hexdump_lineRichard Henderson1-7/+6
Require that the caller output the offset and increment bufptr. Use QEMU_HEXDUMP_LINE_BYTES in vhost_vdpa_dump_config instead of raw integer. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20240412073346.458116-2-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-05-14util/uri: Remove the old URI parsing codeThomas Huth2-1467/+1
Now that we switched all consumers of the URI code to use the URI parsing functions from glib instead, we can remove our internal URI parsing code since it is not used anymore. Reviewed-by: Eric Blake <eblake@redhat.com> Message-ID: <20240418101056.302103-14-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-05-14Remove glib compatibility code that is not required anymoreThomas Huth1-10/+0
Now that we bumped the minimum glib version to 2.66, we can drop the old code. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-ID: <20240418101056.302103-9-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-05-03util/bufferiszero: Add simd acceleration for aarch64Richard Henderson1-0/+67
Because non-embedded aarch64 is expected to have AdvSIMD enabled, merely double-check with the compiler flags for __ARM_NEON and don't bother with a runtime check. Otherwise, model the loop after the x86 SSE2 function. Use UMAXV for the vector reduction. This is 3 cycles on cortex-a76 and 2 cycles on neoverse-n1. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-03util/bufferiszero: Simplify test_buffer_is_zero_next_accelRichard Henderson1-46/+35
Because the three alternatives are monotonic, we don't need to keep a couple of bitmasks, just identify the strongest alternative at startup. Generalize test_buffer_is_zero_next_accel and init_accel by always defining an accel_table array. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-03util/bufferiszero: Introduce biz_accel_fn typedefRichard Henderson1-3/+4
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-03util/bufferiszero: Improve scalar variantRichard Henderson1-34/+51
Split less-than and greater-than 256 cases. Use unaligned accesses for head and tail. Avoid using out-of-bounds pointers in loop boundary conditions. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-03util/bufferiszero: Optimize SSE2 and AVX2 variantsAlexander Monakov1-41/+76
Increase unroll factor in SIMD loops from 4x to 8x in order to move their bottlenecks from ALU port contention to load issue rate (two loads per cycle on popular x86 implementations). Avoid using out-of-bounds pointers in loop boundary conditions. Follow SSE2 implementation strategy in the AVX2 variant. Avoid use of PTEST, which is not profitable there (like in the removed SSE4 variant). Signed-off-by: Alexander Monakov <amonakov@ispras.ru> Signed-off-by: Mikhail Romanov <mmromanov@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240206204809.9859-6-amonakov@ispras.ru>
2024-05-03util/bufferiszero: Remove useless prefetchesAlexander Monakov1-3/+0
Use of prefetching in bufferiszero.c is quite questionable: - prefetches are issued just a few CPU cycles before the corresponding line would be hit by demand loads; - they are done for simple access patterns, i.e. where hardware prefetchers can perform better; - they compete for load ports in loops that should be limited by load port throughput rather than ALU throughput. Signed-off-by: Alexander Monakov <amonakov@ispras.ru> Signed-off-by: Mikhail Romanov <mmromanov@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240206204809.9859-5-amonakov@ispras.ru>
2024-05-03util/bufferiszero: Reorganize for early test for accelerationAlexander Monakov1-51/+31
Test for length >= 256 inline, where is is often a constant. Before calling into the accelerated routine, sample three bytes from the buffer, which handles most non-zero buffers. Signed-off-by: Alexander Monakov <amonakov@ispras.ru> Signed-off-by: Mikhail Romanov <mmromanov@ispras.ru> Message-Id: <20240206204809.9859-3-amonakov@ispras.ru> [rth: Use __builtin_constant_p; move the indirect call out of line.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-03util/bufferiszero: Remove AVX512 variantAlexander Monakov1-35/+3
Thanks to early checks in the inline buffer_is_zero wrapper, the SIMD routines are invoked much more rarely in normal use when most buffers are non-zero. This makes use of AVX512 unprofitable, as it incurs extra frequency and voltage transition periods during which the CPU operates at reduced performance, as described in https://travisdowns.github.io/blog/2020/01/17/avxfreq1.html Signed-off-by: Mikhail Romanov <mmromanov@ispras.ru> Signed-off-by: Alexander Monakov <amonakov@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240206204809.9859-4-amonakov@ispras.ru> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-03util/bufferiszero: Remove SSE4.1 variantAlexander Monakov1-29/+0
The SSE4.1 variant is virtually identical to the SSE2 variant, except for using 'PTEST+JNZ' in place of 'PCMPEQB+PMOVMSKB+CMP+JNE' for testing if an SSE register is all zeroes. The PTEST instruction decodes to two uops, so it can be handled only by the complex decoder, and since CMP+JNE are macro-fused, both sequences decode to three uops. The uops comprising the PTEST instruction dispatch to p0 and p5 on Intel CPUs, so PCMPEQB+PMOVMSKB is comparatively more flexible from dispatch standpoint. Hence, the use of PTEST brings no benefit from throughput standpoint. Its latency is not important, since it feeds only a conditional jump, which terminates the dependency chain. I never observed PTEST variants to be faster on real hardware. Signed-off-by: Alexander Monakov <amonakov@ispras.ru> Signed-off-by: Mikhail Romanov <mmromanov@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240206204809.9859-2-amonakov@ispras.ru>
2024-04-30plugins: Replace pr_ops with a proper debug dump flagRichard Henderson1-0/+4
The DEBUG_PLUGIN_GEN_OPS ifdef is replaced with "-d op_plugin". The second pr_ops call can be obtained with "-d op". Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-24Merge tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru into stagingRichard Henderson1-5/+5
Error reporting patches for 2024-04-24 # -----BEGIN PGP SIGNATURE----- # # iQJGBAABCAAwFiEENUvIs9frKmtoZ05fOHC0AOuRhlMFAmYouloSHGFybWJydUBy # ZWRoYXQuY29tAAoJEDhwtADrkYZTzLwP+wQjCWJHpTB+uQ3+U5Tb77BUJxuEjDMj # txNIJBXHOo7erxTSCieLuQICm8e30z62QAK4nVStyMDcyGh1KfwdSDAxBFnuLpA2 # 7X5bXbvCrm4vXVASRTV1zKCYDlIXFfrMWLvN5KgM90RsodLcy0szlXg+qYyoIM3Z # 8zp0Ug0fQPFHiOAQJi9ZTOsCYJBhZc2sbzgQEmf/g6q9bJaZHzPEHvVT4AQhTAtn # 7BIJY+vGDZNZwbP/0obWy2lai3kbGak8OXpwq/bewdrxeRmvqmM7sk+V/P2tXQD+ # kZe0/HWuDoO5J8L3KHiJnBJ0KCk8fbo4I0T6v9vf55Sj8K0r7O9sykgXXWv8q0lO # GrQa0YcyWAckI41stYQpwEpIlRanuZv/p8OZFJIqsTAfaw7RlbIBYA9xZCUnTton # FbHO/t2BLfo8eO9/xRD4r1u6vMbVozImPETuUMPyLHzlrdw2thxddKQNInHYYZ2U # SvvaByceEP2UywOnOflZhVL2dIhhnrBztiW2Vqod1fQHpfBAcJn909PZIlPZyMkr # gUnABI/rtC/lW3pBee6HmfzJ6Fah0e0XCpCY20qFe27Bi/z3xKi5NWYuyAUG5csp # CuTsc4pXfPVj5Z+Mk4pyY8PK5k4jSa7vAVLCLTNzXJLZlJTb6yuf0HsJ7768nHDc # hSEIjLwQWYtw # =r8Rv # -----END PGP SIGNATURE----- # gpg: Signature made Wed 24 Apr 2024 12:52:58 AM PDT # gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653 # gpg: issuer "armbru@redhat.com" # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [undefined] # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [undefined] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653 * tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru: qapi: Inline and remove QERR_PROPERTY_VALUE_BAD definition qapi: Inline and remove QERR_MIGRATION_ACTIVE definition qapi: Correct error message for 'vcpu_dirty_limit' parameter qapi: Inline and remove QERR_INVALID_PARAMETER_TYPE definition qapi: Inline QERR_INVALID_PARAMETER_TYPE definition (constant value) qapi: Inline and remove QERR_INVALID_PARAMETER definition qapi: Inline and remove QERR_DEVICE_NO_HOTPLUG definition qapi: Inline and remove QERR_DEVICE_HAS_NO_MEDIUM definition qapi: Inline and remove QERR_BUS_NO_HOTPLUG definition error: Drop superfluous #include "qapi/qmp/qerror.h" Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-24qapi: Inline and remove QERR_INVALID_PARAMETER definitionPhilippe Mathieu-Daudé1-5/+5
Address the comment added in commit 4629ed1e98 ("qerror: Finally unused, clean up"), from 2015: /* * These macros will go away, please don't use * in new code, and do not add new ones! */ Mechanical transformation using: $ sed -i -e "s/QERR_INVALID_PARAMETER,/\"Invalid parameter '%s'\",/" \ $(git grep -lw QERR_INVALID_PARAMETER) Manually simplify qemu_opts_create(), and remove the macro definition in include/qapi/qmp/qerror.h. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-ID: <20240312141343.3168265-6-armbru@redhat.com>
2024-04-18util/qemu-config: Extract QMP commands to qemu-config-qmp.cPhilippe Mathieu-Daudé1-202/+2
QMP is irrelevant for user emulation. Extract the code related to QMP in a different source file, which won't be build for user emulation binaries. This avoid pulling pointless code. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20240404194757.9343-5-philmd@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-ID: <20240408155330.522792-7-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-04-18yank: only build if neededPaolo Bonzini1-1/+1
The yank feature is not used in user emulation. Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20240408155330.522792-6-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-03-21coroutine: reserve 5,000 mappingsStefan Hajnoczi1-5/+10
Daniel P. Berrangé <berrange@redhat.com> pointed out that the coroutine pool size heuristic is very conservative. Instead of halving max_map_count, he suggested reserving 5,000 mappings for non-coroutine users based on observations of guests he has access to. Fixes: 86a637e48104 ("coroutine: cap per-thread local pool size") Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20240320181232.1464819-1-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2024-03-19coroutine: cap per-thread local pool sizeStefan Hajnoczi1-59/+223
The coroutine pool implementation can hit the Linux vm.max_map_count limit, causing QEMU to abort with "failed to allocate memory for stack" or "failed to set up stack guard page" during coroutine creation. This happens because per-thread pools can grow to tens of thousands of coroutines. Each coroutine causes 2 virtual memory areas to be created. Eventually vm.max_map_count is reached and memory-related syscalls fail. The per-thread pool sizes are non-uniform and depend on past coroutine usage in each thread, so it's possible for one thread to have a large pool while another thread's pool is empty. Switch to a new coroutine pool implementation with a global pool that grows to a maximum number of coroutines and per-thread local pools that are capped at hardcoded small number of coroutines. This approach does not leave large numbers of coroutines pooled in a thread that may not use them again. In order to perform well it amortizes the cost of global pool accesses by working in batches of coroutines instead of individual coroutines. The global pool is a list. Threads donate batches of coroutines to when they have too many and take batches from when they have too few: .-----------------------------------. | Batch 1 | Batch 2 | Batch 3 | ... | global_pool `-----------------------------------' Each thread has up to 2 batches of coroutines: .-------------------. | Batch 1 | Batch 2 | per-thread local_pool (maximum 2 batches) `-------------------' The goal of this change is to reduce the excessive number of pooled coroutines that cause QEMU to abort when vm.max_map_count is reached without losing the performance of an adequately sized coroutine pool. Here are virtio-blk disk I/O benchmark results: RW BLKSIZE IODEPTH OLD NEW CHANGE randread 4k 1 113725 117451 +3.3% randread 4k 8 192968 198510 +2.9% randread 4k 16 207138 209429 +1.1% randread 4k 32 212399 215145 +1.3% randread 4k 64 218319 221277 +1.4% randread 128k 1 17587 17535 -0.3% randread 128k 8 17614 17616 +0.0% randread 128k 16 17608 17609 +0.0% randread 128k 32 17552 17553 +0.0% randread 128k 64 17484 17484 +0.0% See files/{fio.sh,test.xml.j2} for the benchmark configuration: https://gitlab.com/stefanha/virt-playbooks/-/tree/coroutine-pool-fix-sizing Buglink: https://issues.redhat.com/browse/RHEL-28947 Reported-by: Sanjay Rao <srao@redhat.com> Reported-by: Boaz Ben Shabat <bbenshab@redhat.com> Reported-by: Joe Mario <jmario@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20240318183429.1039340-1-stefanha@redhat.com>
2024-03-08oslib-posix: fix memory leak in touch_all_pagesPaolo Bonzini1-2/+4
touch_all_pages() can return early, before creating threads. In this case, however, it leaks the MemsetContext that it has allocated at the beginning of the function. Reported by Coverity as CID 1534922. Fixes: 04accf43df8 ("oslib-posix: initialize backend memory objects in parallel", 2024-02-06) Reviewed-by: Mark Kanda <mark.kanda@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-02-28notify: pass error to notifier with returnSteve Sistare1-2/+3
Pass an error object as the third parameter to "notifier with return" notifiers, so clients no longer need to bundle an error object in the opaque data. The new parameter is used in a later patch. Signed-off-by: Steve Sistare <steven.sistare@oracle.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/1708622920-68779-2-git-send-email-steven.sistare@oracle.com Signed-off-by: Peter Xu <peterx@redhat.com>
2024-02-12qapi: Improve documentation of file descriptor socket addressesMarkus Armbruster1-1/+2
SocketAddress branch @fd is documented in enum SocketAddressType, unlike the other branches. That's because the branch's type is String from common.json. Use a local copy of String, so we can put the documentation in the usual place. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-ID: <20240205074709.3613229-14-armbru@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2024-02-08Merge tag 'pull-request-2024-02-06' of https://gitlab.com/thuth/qemu into ↵Peter Maydell1-1/+5
staging * Emulate CVB, CVBY, CVBG and CVDG s390x instructions * Fix bug in lsi53c895a reentrancy counter * Deprecate the "power5+" and "power7+" CPU names * Fix problems in the freebsd VM test # -----BEGIN PGP SIGNATURE----- # # iQJFBAABCAAvFiEEJ7iIR+7gJQEY8+q5LtnXdP5wLbUFAmXCCXURHHRodXRoQHJl # ZGhhdC5jb20ACgkQLtnXdP5wLbXtEA/9HKWMHbWqDAdlrpmfW8lCFaBHgV0+Fqsy # GlxJykni2BxIWNoR7J6SdAqbgx3E2/7i8IMIUwYXlNBjEs/UQ0ZcnI5k6OfUS24p # qfbdH717SgsaB9R1vCBhmOGGWYBfe/RqPGIcni/eg+jSxB5cn2XvEv3+ZBckvDsh # KFuuAa6vvuBVhyXLbkP8Z+LEe27ttIYi5v1dvJ1an4UbFESqxVb0knyuFYpZpY8Y # h7dZ0hyCid7YT03zVmSADK7anO+epBdzUU3SsKXj2dB9nebSjmkav6lQQBKYHHUg # THojcWKwFPNK0AojhBuBCqFYgkGGt/9kjwlUt7jfm1TcSemN65XLNYHThRekPuAJ # Jcze8dcEerbj1xsNWYh4hPvB92laEiyVR5BYFfUkJ9m2IAamPQLHvOT7jzhC3Y9k # 4wvVcf9QKVtKW0QO54SQjD4A/qQu/4777oH5w83nGuxjUthmHDqZmjDlIRe6lKJt # gsA+mKn+w9HrtiXOSkoMhK8PAyvCoAef/N7kvHZoHmp6TtfQAjPs4/v2uZMpnd60 # z7Cw50giHpo9lmiZ1Ey2fQvw9orYhNoXAc4XfYGHuYdQFWpCGz1PB2Km8uTPTEUe # as364ULBqWoFBCRuRndy2+z2e3zhK5THTPCAyHf48M6teMEPa4KTsTCk7MzmfVfx # C8RsLcmrFPI= # =eQNc # -----END PGP SIGNATURE----- # gpg: Signature made Tue 06 Feb 2024 10:27:01 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-2024-02-06' of https://gitlab.com/thuth/qemu: meson: Link with libinotify on FreeBSD test-util-filemonitor: Adapt to the FreeBSD inotify rename semantics tests/vm/freebsd: Reload the sshd configuration tests/vm: Set UseDNS=no in the sshd configuration target/s390x: Prefer fast cpu_env() over slower CPU QOM cast macro tests/tcg/s390x: Test CONVERT TO BINARY tests/tcg/s390x: Test CONVERT TO DECIMAL target/s390x: Emulate CVB, CVBY and CVBG target/s390x: Emulate CVDG docs/about: Deprecate the old "power5+" and "power7+" CPU names target/ppc/cpu-models: Rename power5+ and power7+ for new QOM naming rules hw/scsi/lsi53c895a: add missing decrement of reentrancy counter Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-02-06meson: Link with libinotify on FreeBSDIlya Leoshkevich1-1/+5
make vm-build-freebsd fails with: ld: error: undefined symbol: inotify_init1 >>> referenced by filemonitor-inotify.c:183 (../src/util/filemonitor-inotify.c:183) >>> util_filemonitor-inotify.c.o:(qemu_file_monitor_new) in archive libqemuutil.a On FreeBSD the inotify functions are defined in libinotify.so. Add it to the dependencies. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-ID: <20240206002344.12372-5-iii@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-02-06oslib-posix: initialize backend memory objects in parallelMark Kanda2-32/+107
QEMU initializes preallocated backend memory as the objects are parsed from the command line. This is not optimal in some cases (e.g. memory spanning multiple NUMA nodes) because the memory objects are initialized in series. Allow the initialization to occur in parallel (asynchronously). In order to ensure optimal thread placement, asynchronous initialization requires prealloc context threads to be in use. Signed-off-by: Mark Kanda <mark.kanda@oracle.com> Message-ID: <20240131165327.3154970-2-mark.kanda@oracle.com> Tested-by: Mario Casquero <mcasquer@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2024-01-30misc: Clean up includesPeter Maydell1-1/+0
This commit was created with scripts/clean-includes: ./scripts/clean-includes --git misc net/af-xdp.c plugins/*.c audio/pwaudio.c util/userfaultfd.c All .c should include qemu/osdep.h first. The script performs three related cleanups: * Ensure .c files include qemu/osdep.h first. * Including it in a .h is redundant, since the .c already includes it. Drop such inclusions. * Likewise, including headers qemu/osdep.h includes is redundant. Drop these, too. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-01-26qapi: Fix dangling references to docs/devel/qapi-code-gen.txtMarkus Armbruster1-1/+1
Conversion of docs/devel/qapi-code-gen.txt to ReST left several dangling references behind. Fix them to point to docs/devel/qapi-code-gen.rst. Fixes: f7aa076dbdfc (docs: convert qapi-code-gen.txt to ReST) Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-ID: <20240120095327.666239-4-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2024-01-25Merge tag 'pull-request-2024-01-24' of https://gitlab.com/thuth/qemu into ↵Peter Maydell1-858/+11
staging * Test timeout fixes * Clean up URI code # -----BEGIN PGP SIGNATURE----- # # iQJFBAABCAAvFiEEJ7iIR+7gJQEY8+q5LtnXdP5wLbUFAmWw6SsRHHRodXRoQHJl # ZGhhdC5jb20ACgkQLtnXdP5wLbXsVQ//Ss33GMIu1aUEFsZTSUghUXPx8035zin/ # TugiIcLfcONxxCi+Q/jfUPowJ3TLwt0vdv3V73M94+XBDrWClLyJYuu8eew0EMZI # zqBl5AyO2hdGXxnF/wJAtdKfleUElJDooUyGPIlsJ2gXmmLi60qkQfKR8dGl3h2r # fLM36LVsWWtM3HaCePHlHYaYdfy917w4bNWJRf/QfBqSMX5F5mlU+EvzEFLBTkT/ # 4HCaYhE1ouQnudO+rvuK78I72BgXgaPTn2oCXVdBvbEM+36heJyhYRDCW4ncf5QN # PH8UQUih/NrU9BSrLT3aHE3VcYWzik7s8A4Nkg21bHYHhXstO/KKzhUU5//wOUp5 # BV+mwjwTxpnOAFqmgQuvH8rTx/YuXCpdkNdoLd41VX8Qa4DP1AjBWAC6LrJkDq51 # 2PIKqMPjSsBaXd/itBKBFzY7JkDRLFUZQMk78l/JjFuhvhE8OfpBPtCofgYo9/OE # cn9khZ6Oh9zxzZWb9YIdHiu4v1VP0ZtGfB0Zt4WIi2oBm3ql6+cHFkVcssaEIiNQ # h5tI/xLviUIIRMIPpu7W+WSZBHt+w6wjBlu3O5fjoPSoHQsmNg2S9mS9+AQ2/KGJ # 4/78/Pg4XpKVd2MSLMQ6A2LlI1iQd51TV0aTqrzd/DdZYP3TBXdasQPR/WZN4eWw # kYwt0bA5FGs= # =1N9B # -----END PGP SIGNATURE----- # gpg: Signature made Wed 24 Jan 2024 10:40:43 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-2024-01-24' of https://gitlab.com/thuth/qemu: util/uri: Remove unused macros ISA_RESERVED() and ISA_GEN_DELIM() util/uri: Remove the uri_string_escape() function util/uri: Remove unused functions uri_resolve() and uri_resolve_relative() util/uri: Remove uri_string_unescape() tests/qtest: Bump timeouts of boot_sector_test()-based tests to 610 seconds tests/unit/test-iov: Fix timeout problem on NetBSD and OpenBSD tests/qtest: Bump timeout of the boot-serial-test to 360 seconds Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
generated by cgit v1.1 at 2025-01-27 16:53:50 +0000