Merge tag 'pull-tcg-20230523-3' of https://gitlab.com/rth7680/qemu into staging

util: Host cpu detection for x86 and aa64
util: Use cpu detection for bufferiszero
migration: Use cpu detection for xb

Merge tag 'pull-tcg-20230523-3' of https://gitlab.com/rth7680/qemu into staging

util: Host cpu detection for x86 and aa64
util: Use cpu detection for bufferiszero
migration: Use cpu detection for xbzrle
tcg: Replace and remove cpu_atomic_{ld,st}o*
host/include: Split qemu/atomic128.h
tcg: Remove DEBUG_DISAS
tcg: Remove USE_TCG_OPTIMIZATIONS

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# gpg: Signature made Tue 23 May 2023 06:57:20 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-20230523-3' of https://gitlab.com/rth7680/qemu: (28 commits)
tcg: Remove USE_TCG_OPTIMIZATIONS
tcg: Remove DEBUG_DISAS
qemu/atomic128: Add runtime test for FEAT_LSE2
qemu/atomic128: Improve cmpxchg fallback for atomic16_set
tcg: Split out tcg/debug-assert.h
accel/tcg: Correctly use atomic128.h in ldst_atomicity.c.inc
qemu/atomic128: Split atomic16_read
accel/tcg: Eliminate #if on HAVE_ATOMIC128 and HAVE_CMPXCHG128
accel/tcg: Remove prot argument to atomic_mmu_lookup
accel/tcg: Remove cpu_atomic_{ld,st}o_*_mmu
target/s390x: Always use cpu_atomic_cmpxchgl_be_mmu in do_csst
target/s390x: Use cpu_{ld,st}*_mmu in do_csst
accel/tcg: Unify cpu_{ld,st}*_{be,le}_mmu
target/s390x: Use tcg_gen_qemu_{ld,st}_i128 for LPQ, STPQ
target/ppc: Use tcg_gen_qemu_{ld,st}_i128 for LQARX, LQ, STQ
include/qemu: Move CONFIG_ATOMIC128_OPT handling to atomic128.h
meson: Fix detect atomic128 support with optimization
include/host: Split out atomic128-ldst.h
include/host: Split out atomic128-cas.h
util: Add cpuinfo-aarch64.c
...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

migration/xbzrle: Use i386 host/cpuinfo.h

Perform the function selection once, and only if CONFIG_AVX512_OPT
is enabled. Centralize the selection to xbzrle.c, instead of
spreading the init across 3

migration/xbzrle: Use i386 host/cpuinfo.h

Perform the function selection once, and only if CONFIG_AVX512_OPT
is enabled. Centralize the selection to xbzrle.c, instead of
spreading the init across 3 files.

Remove xbzrle-bench.c. The benefit of being able to benchmark
the different implementations is less important than not peeking
into the internals of the implementation.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

migration/xbzrle: Shuffle function order

Place the CONFIG_AVX512BW_OPT block at the top,
which will aid function selection in the next patch.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Revie

migration/xbzrle: Shuffle function order

Place the CONFIG_AVX512BW_OPT block at the top,
which will aid function selection in the next patch.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

Merge tag 'pull-tcg-20230502-2' of https://gitlab.com/rth7680/qemu into staging

Misc tcg-related patch queue.

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Merge tag 'pull-tcg-20230502-2' of https://gitlab.com/rth7680/qemu into staging

Misc tcg-related patch queue.

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# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* tag 'pull-tcg-20230502-2' of https://gitlab.com/rth7680/qemu:
tcg: Introduce tcg_out_movext2
tcg/mips: Conditionalize tcg_out_exts_i32_i64
tcg/loongarch64: Conditionalize tcg_out_exts_i32_i64
accel/tcg: Add cpu_ld*_code_mmu
migration/xbzrle: Use __attribute__((target)) for avx512
qemu/int128: Re-shuffle Int128Alias members
tcg: Add tcg_gen_gvec_rotrs
tcg: Add tcg_gen_gvec_andcs
qemu/host-utils.h: Add clz and ctz functions for lower-bit integers
qemu/bitops.h: Limit rotate amounts
accel/tcg: Uncache the host address for instruction fetch when tlb size < 1
softmmu: Tidy dirtylimit_dirty_ring_full_time

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

migration/xbzrle: Use __attribute__((target)) for avx512

Use the attribute, which is supported by clang, instead of
the #pragma, which is not supported and, for some reason,
also not detected by the

migration/xbzrle: Use __attribute__((target)) for avx512

Use the attribute, which is supported by clang, instead of
the #pragma, which is not supported and, for some reason,
also not detected by the meson probe, so we fail by -Werror.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230501210555.289806-1-richard.henderson@linaro.org>

show more ...

Merge tag 'migration-20230316-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

Hi

This is just fixes for migration.
- Fix rdma (dave)
- Remove unused vari

Merge tag 'migration-20230316-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

Hi

This is just fixes for migration.
- Fix rdma (dave)
- Remove unused variable (Zhijian)
- Fix AVX512 and XBZRLE (Matheus)
- Fix migration preempt (Peter)
- Fix populate_vfio_info (Steve)
- Fix multifd send trace (Wei)

Please apply.

Later, Juan.

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# gpg: Signature made Thu 16 Mar 2023 15:11:41 GMT
# gpg: using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20230316-pull-request' of https://gitlab.com/juan.quintela/qemu:
migration: fix populate_vfio_info
migration/multifd: correct multifd_send_thread to trace the flags
migration/rdma: Remove deprecated variable rdma_return_path
migration/xbzrle: fix out-of-bounds write with axv512
migration/xbzrle: use ctz64 to avoid undefined result
migration/rdma: Fix return-path case
migration: Wait on preempt channel in preempt thread

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

migration/xbzrle: fix out-of-bounds write with axv512

xbzrle_encode_buffer_avx512() checks for overflows too scarcely in its
outer loop, causing out-of-bounds writes:

$ ../configure --target-list=a

migration/xbzrle: fix out-of-bounds write with axv512

xbzrle_encode_buffer_avx512() checks for overflows too scarcely in its
outer loop, causing out-of-bounds writes:

$ ../configure --target-list=aarch64-softmmu --enable-sanitizers --enable-avx512bw
$ make tests/unit/test-xbzrle && ./tests/unit/test-xbzrle

==5518==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62100000b100 at pc 0x561109a7714d bp 0x7ffed712a440 sp 0x7ffed712a430
WRITE of size 1 at 0x62100000b100 thread T0
#0 0x561109a7714c in uleb128_encode_small ../util/cutils.c:831
#1 0x561109b67f6a in xbzrle_encode_buffer_avx512 ../migration/xbzrle.c:275
#2 0x5611099a7428 in test_encode_decode_overflow ../tests/unit/test-xbzrle.c:153
#3 0x7fb2fb65a58d (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x7a58d)
#4 0x7fb2fb65a333 (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x7a333)
#5 0x7fb2fb65aa79 in g_test_run_suite (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x7aa79)
#6 0x7fb2fb65aa94 in g_test_run (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x7aa94)
#7 0x5611099a3a23 in main ../tests/unit/test-xbzrle.c:218
#8 0x7fb2fa78c082 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24082)
#9 0x5611099a608d in _start (/qemu/build/tests/unit/test-xbzrle+0x28408d)

0x62100000b100 is located 0 bytes to the right of 4096-byte region [0x62100000a100,0x62100000b100)
allocated by thread T0 here:
#0 0x7fb2fb823a06 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cc:153
#1 0x7fb2fb637ef0 in g_malloc0 (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x57ef0)

Fix that by performing the overflow check in the inner loop, instead.

Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

show more ...

migration/xbzrle: use ctz64 to avoid undefined result

__builtin_ctzll() produces undefined results when the argument is 0.
This can be seen through test-xbzrle, which produces the following
warning:

migration/xbzrle: use ctz64 to avoid undefined result

__builtin_ctzll() produces undefined results when the argument is 0.
This can be seen through test-xbzrle, which produces the following
warning:

../migration/xbzrle.c:265: runtime error: passing zero to ctz(), which is not a valid argument

Replace __builtin_ctzll() with our ctz64() wrapper which properly
handles 0.

Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

show more ...

Merge tag 'migration-20230213-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (take3)

Hi

In this PULL request:
- Added to leonardo fixes:
Fixes: b5eea99e

Merge tag 'migration-20230213-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (take3)

Hi

In this PULL request:
- Added to leonardo fixes:
Fixes: b5eea99ec2 ("migration: Add yank feature")
Reported-by: Li Xiaohui <xiaohli@redhat.com>

Please apply.

[take 2]
- rebase to latest upstream
- fix compilation of linux-user (if have_system was missing) (me)
- cleanup multifd_load_cleanup(leonardo)
- Document RAM flags (me)

Please apply.

[take 1]
This are all the reviewed patches for migration:
- AVX512 support for xbzrle (Ling Xu)
- /dev/userfaultd support (Peter Xu)
- Improve ordering of channels (Peter Xu)
- multifd cleanups (Li Zhang)
- Remove spurious files from last merge (me)
Rebase makes that to you
- Fix mixup between state_pending_{exact,estimate} (me)
- Cache RAM size during migration (me)
- cleanup several functions (me)

Please apply.

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# gpg: Signature made Mon 13 Feb 2023 02:51:02 GMT
# gpg: using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20230213-pull-request' of https://gitlab.com/juan.quintela/qemu: (22 commits)
ram: Document migration ram flags
migration/multifd: Move load_cleanup inside incoming_state_destroy
migration/multifd: Join all multifd threads in order to avoid leaks
migration/multifd: Remove unnecessary assignment on multifd_load_cleanup()
migration/multifd: Change multifd_load_cleanup() signature and usage
migration: Postpone postcopy preempt channel to be after main
migration: Add a semaphore to count PONGs
migration: Cleanup postcopy_preempt_setup()
migration: Rework multi-channel checks on URI
Update bench-code for addressing CI problem
AVX512 support for xbzrle_encode_buffer
migration: I messed state_pending_exact/estimate
migration: Make ram_save_target_page() a pointer
migration: Calculate ram size once
migration: Split ram_bytes_total_common() in two functions
migration: Make find_dirty_block() return a single parameter
migration: Simplify ram_find_and_save_block()
util/userfaultfd: Support /dev/userfaultfd
linux-headers: Update to v6.1
multifd: Remove some redundant code
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

AVX512 support for xbzrle_encode_buffer

This commit is the same with [PATCH v6 1/2], and provides avx512 support for xbzrle_encode_buffer
function to accelerate xbzrle encoding speed. Runtime check

AVX512 support for xbzrle_encode_buffer

This commit is the same with [PATCH v6 1/2], and provides avx512 support for xbzrle_encode_buffer
function to accelerate xbzrle encoding speed. Runtime check of avx512
support and benchmark for this feature are added. Compared with C
version of xbzrle_encode_buffer function, avx512 version can achieve
50%-70% performance improvement on benchmarking. In addition, if dirty
data is randomly located in 4K page, the avx512 version can achieve
almost 140% performance gain.

Signed-off-by: ling xu <ling1.xu@intel.com>
Co-authored-by: Zhou Zhao <zhou.zhao@intel.com>
Co-authored-by: Jun Jin <jun.i.jin@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

show more ...

Merge remote-tracking branch 'quintela/tags/migration/20170518' into staging

migration/next for 20170518

# gpg: Signature made Thu 18 May 2017 06:23:26 PM BST
# gpg: using RSA key 0x

Merge remote-tracking branch 'quintela/tags/migration/20170518' into staging

migration/next for 20170518

# gpg: Signature made Thu 18 May 2017 06:23:26 PM BST
# gpg: using RSA key 0xF487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg: aka "Juan Quintela <quintela@trasno.org>"
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* quintela/tags/migration/20170518:
migration: Make savevm.c target independent
exec: Create include for target_page_size()
migration: migration.h was not needed
migration: Remove vmstate.h from migration.h
migration: Remove qemu-file.h from vmstate.h
migration: Split vmstate-types.c from vmstate.c
migration: Move qjson.h to migration/
migration: Remove migration.h from colo.h
migration: Export qemu-file-channel.c functions in its own file
migration: Split migration/channel.c for channel operations
migration: Create migration/xbzrle.h
block migration: Allow compile time disable
migration: Remove old MigrationParams
migration: Remove use of old MigrationParams
migration: Create block capability
hmp: Use visitor api for hmp_migrate_set_parameter()
postcopy: Require RAMBlocks that are whole pages
migration: Fix non-multiple of page size migration

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

migration: Create migration/xbzrle.h

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Log filtering from Alex and Peter
* Chardev fix from Marc-André
* config.status tweak from David
* Header file tweaks

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Log filtering from Alex and Peter
* Chardev fix from Marc-André
* config.status tweak from David
* Header file tweaks from Markus, myself and Veronia (Outreachy candidate)
* get_ticks_per_sec() removal from Rutuja (Outreachy candidate)
* Coverity fix from myself
* PKE implementation from myself, based on rth's XSAVE support

# gpg: Signature made Thu 24 Mar 2016 20:15:11 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (28 commits)
target-i386: implement PKE for TCG
config.status: Pass extra parameters
char: translate from QIOChannel error to errno
exec: fix error handling in file_ram_alloc
cputlb: modernise the debug support
qemu-log: support simple pid substitution for logs
target-arm: dfilter support for in_asm
qemu-log: dfilter-ise exec, out_asm, op and opt_op
qemu-log: new option -dfilter to limit output
qemu-log: Improve the "exec" TB execution logging
qemu-log: Avoid function call for disabled qemu_log_mask logging
qemu-log: correct help text for -d cpu
tcg: pass down TranslationBlock to tcg_code_gen
util: move declarations out of qemu-common.h
Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND
hw: explicitly include qemu-common.h and cpu.h
include/crypto: Include qapi-types.h or qemu/bswap.h instead of qemu-common.h
isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.h
Move ParallelIOArg from qemu-common.h to sysemu/char.h
Move QEMU_ALIGN_*() from qemu-common.h to qemu/osdep.h
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Conflicts:
scripts/clean-includes

show more ...

util: move declarations out of qemu-common.h

Move declarations out of qemu-common.h for functions declared in
utils/ files: e.g. include/qemu/path.h for utils/path.c.
Move inline functions out of qe

util: move declarations out of qemu-common.h

Move declarations out of qemu-common.h for functions declared in
utils/ files: e.g. include/qemu/path.h for utils/path.c.
Move inline functions out of qemu-common.h and into new files (e.g.
include/qemu/bcd.h)

Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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migration: Clean up includes

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed

migration: Clean up includes

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-2-git-send-email-peter.maydell@linaro.org

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Merge remote-tracking branch 'remotes/amit-migration/tags/for-2.3-2' into staging

Migration pull for 2.3. Mostly moving the code to the migration/
directory, and updating MAINTAINERS.

I've also fo

Merge remote-tracking branch 'remotes/amit-migration/tags/for-2.3-2' into staging

Migration pull for 2.3. Mostly moving the code to the migration/
directory, and updating MAINTAINERS.

I've also folded my other MAINTAINERS update patches into this, as
they're small by themselves.

# gpg: Signature made Tue 16 Dec 2014 12:21:24 GMT using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg: aka "Amit Shah <amit@kernel.org>"
# gpg: aka "Amit Shah <amitshah@gmx.net>"

* remotes/amit-migration/tags/for-2.3-2:
MAINTAINERS: Update for migrated migration code
Split the QEMU buffered file code out
Split struct QEMUFile out
Remove migration- pre/post fixes off files in migration/ dir
Start migrating migration code into a migration directory
qmp-command.hx: add missing docs for migration capabilites
cpu: verify that block->host is set
cpu: assert host pointer offset within block
exec: add wrapper for host pointer access
MAINTAINERS: add include files to virtio-serial entry
MAINTAINERS: add entry for virtio-rng
MAINTAINERS: migration: add vmstate static checker files
MAINTAINERS: Add myself to migration maintainers

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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Start migrating migration code into a migration directory

The migration code now occupies a fair chunk of the top level .c
files, it seems time to give it it's own directory.

I've not touched:
a

Start migrating migration code into a migration directory

The migration code now occupies a fair chunk of the top level .c
files, it seems time to give it it's own directory.

I've not touched:
arch_init.c - that's mostly RAM migration but has a few random other
bits
savevm.c - because it's built target specific

This is purely a code move; no code has changed.
- it fails checkpatch because of old violations, it feels safer
to keep this as purely a move and fix those at some mythical future
date.

The xbzrle and vmstate tests are now only run for softmmu builds
since they require files in the migrate/ directory which is only built
for softmmu.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>

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