Merge tag 'pull-misc-20240821' of https://gitlab.com/rth7680/qemu into staging

target/i386: Fix carry flag for BLSI
target/i386: Fix tss access size in switch_tss_ra
linux-user: Handle short reads i

Merge tag 'pull-misc-20240821' of https://gitlab.com/rth7680/qemu into staging

target/i386: Fix carry flag for BLSI
target/i386: Fix tss access size in switch_tss_ra
linux-user: Handle short reads in mmap_h_gt_g
bsd-user: Handle short reads in mmap_h_gt_g

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

* tag 'pull-misc-20240821' of https://gitlab.com/rth7680/qemu:
target/i386: Fix tss access size in switch_tss_ra
target/i386: Fix carry flag for BLSI
target/i386: Split out gen_prepare_val_nz
bsd-user: Handle short reads in mmap_h_gt_g
linux-user: Handle short reads in mmap_h_gt_g

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

show more ...

linux-user: Handle short reads in mmap_h_gt_g

In particular, if an image has a large bss, we can hit
EOF before reading all host_len bytes of the mapping.

Create a helper, mmap_pread to handle the

linux-user: Handle short reads in mmap_h_gt_g

In particular, if an image has a large bss, we can hit
EOF before reading all host_len bytes of the mapping.

Create a helper, mmap_pread to handle the job for both
the larger block in mmap_h_gt_g itself, as well as the
smaller block in mmap_frag.

Cc: qemu-stable@nongnu.org
Fixes: eb5027ac618 ("linux-user: Split out mmap_h_gt_g")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2504
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240820050848.165253-2-richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

show more ...

Merge tag 'pull-lu-20240815' of https://gitlab.com/rth7680/qemu into staging

linux-user: Preserve NULL hit in target_mmap subroutines

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Merge tag 'pull-lu-20240815' of https://gitlab.com/rth7680/qemu into staging

linux-user: Preserve NULL hit in target_mmap subroutines

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

* tag 'pull-lu-20240815' of https://gitlab.com/rth7680/qemu:
linux-user: Preserve NULL hit in target_mmap subroutines

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

show more ...

linux-user: Preserve NULL hit in target_mmap subroutines

Do not pass guest_base to the host mmap instead of zero hint.

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/is

linux-user: Preserve NULL hit in target_mmap subroutines

Do not pass guest_base to the host mmap instead of zero hint.

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2353
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

Merge tag 'accel-20240506' of https://github.com/philmd/qemu into staging

Accelerator patches

- Extract page-protection definitions to page-protection.h
- Rework in accel/tcg in preparation of extr

Merge tag 'accel-20240506' of https://github.com/philmd/qemu into staging

Accelerator patches

- Extract page-protection definitions to page-protection.h
- Rework in accel/tcg in preparation of extracting TCG fields from CPUState
- More uses of get_task_state() in user emulation
- Xen refactors in preparation for adding multiple map caches (Juergen & Edgar)
- MAINTAINERS updates (Aleksandar and Bin)

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* tag 'accel-20240506' of https://github.com/philmd/qemu: (28 commits)
MAINTAINERS: Update my email address
MAINTAINERS: Update Aleksandar Rikalo email
system: Pass RAM MemoryRegion and is_write in xen_map_cache()
xen: mapcache: Break out xen_map_cache_init_single()
xen: mapcache: Break out xen_invalidate_map_cache_single()
xen: mapcache: Refactor xen_invalidate_map_cache_entry_unlocked
xen: mapcache: Refactor xen_replace_cache_entry_unlocked
xen: mapcache: Break out xen_ram_addr_from_mapcache_single
xen: mapcache: Refactor xen_remap_bucket for multi-instance
xen: mapcache: Refactor xen_map_cache for multi-instance
xen: mapcache: Refactor lock functions for multi-instance
xen: let xen_ram_addr_from_mapcache() return -1 in case of not found entry
system: let qemu_map_ram_ptr() use qemu_ram_ptr_length()
user: Use get_task_state() helper
user: Declare get_task_state() once in 'accel/tcg/vcpu-state.h'
user: Forward declare TaskState type definition
accel/tcg: Move @plugin_mem_cbs from CPUState to CPUNegativeOffsetState
accel/tcg: Restrict cpu_plugin_mem_cbs_enabled() to TCG
accel/tcg: Restrict qemu_plugin_vcpu_exit_hook() to TCG plugins
accel/tcg: Update CPUNegativeOffsetState::can_do_io field documentation
...

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

show more ...

accel/tcg: Access tcg_cflags with getter / setter

Access the CPUState::tcg_cflags via tcg_cflags_has() and
tcg_cflags_set() helpers.

Mechanical change using the following Coccinelle spatch script:

accel/tcg: Access tcg_cflags with getter / setter

Access the CPUState::tcg_cflags via tcg_cflags_has() and
tcg_cflags_set() helpers.

Mechanical change using the following Coccinelle spatch script:

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

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

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

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

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-15-philmd@linaro.org>

show more ...

exec/cpu: Extract page-protection definitions to page-protection.h

Extract page-protection definitions from "exec/cpu-all.h"
to "exec/page-protection.h".

The list of files requiring the new header

exec/cpu: Extract page-protection definitions to page-protection.h

Extract page-protection definitions from "exec/cpu-all.h"
to "exec/page-protection.h".

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

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

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-3-philmd@linaro.org>

show more ...

exec/cpu: Rename PAGE_BITS macro to PAGE_RWX

This macro can be used to abbreviate PAGE_READ | PAGE_WRITE | PAGE_EXEC
for which PAGE_RWX is a better name and renaming it also shows it is
not related

exec/cpu: Rename PAGE_BITS macro to PAGE_RWX

This macro can be used to abbreviate PAGE_READ | PAGE_WRITE | PAGE_EXEC
for which PAGE_RWX is a better name and renaming it also shows it is
not related to TARGET_PAGE_BITS.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240505121008.44A0D4E602D@zero.eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

show more ...

Merge tag 'pull-tcg-20240329' of https://gitlab.com/rth7680/qemu into staging

linux-user: Fix shmat(NULL) for host != guest page size
tcg/optimize: Fix sign_mask for logical right-shift
accel/tcg: U

Merge tag 'pull-tcg-20240329' of https://gitlab.com/rth7680/qemu into staging

linux-user: Fix shmat(NULL) for host != guest page size
tcg/optimize: Fix sign_mask for logical right-shift
accel/tcg: Use CPUState.get_pc in cpu_io_recompile
disas: Show opcodes for target_disas and monitor_disas

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# 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-20240329' of https://gitlab.com/rth7680/qemu:
accel/tcg: Use CPUState.get_pc in cpu_io_recompile
disas: Show opcodes for target_disas and monitor_disas
tcg/optimize: Fix sign_mask for logical right-shift
tests/tcg: Test shmat(NULL)
linux-user: Fix shmat(NULL) for h != g
linux-user: Fix shmat() strace
linux-user: Fix semctl() strace

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

show more ...

linux-user: Fix shmat(NULL) for h != g

In the h != g && shmaddr == NULL && !reserved_va case, target_shmat()
incorrectly mmap()s the initial anonymous range with
MAP_FIXED_NOREPLACE, even though the

linux-user: Fix shmat(NULL) for h != g

In the h != g && shmaddr == NULL && !reserved_va case, target_shmat()
incorrectly mmap()s the initial anonymous range with
MAP_FIXED_NOREPLACE, even though the earlier mmap_find_vma() has
already reserved the respective address range.

Fix by using MAP_FIXED when "mapped", which is set after
mmap_find_vma(), is true.

Fixes: 78bc8ed9a8f0 ("linux-user: Rewrite target_shmat")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240325192436.561154-4-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

Merge tag 'pull-tcg-20240301' of https://gitlab.com/rth7680/qemu into staging

linux-user: Rewrite elf coredump
tcg/aarch64: Apple does not align __int128_t in even registers
accel/tcg: Fixes for pag

Merge tag 'pull-tcg-20240301' of https://gitlab.com/rth7680/qemu into staging

linux-user: Rewrite elf coredump
tcg/aarch64: Apple does not align __int128_t in even registers
accel/tcg: Fixes for page tables in mmio memory
linux-user: Remove qemu_host_page_{size,mask}, HOST_PAGE_ALIGN
migration: Remove qemu_host_page_size
hw/tpm: Remove qemu_host_page_size
softmmu: Remove qemu_host_page_{size,mask}, HOST_PAGE_ALIGN
linux-user: Split and reorganize target_mmap.
*-user: Deprecate and disable -p pagesize
linux-user: Allow TARGET_PAGE_BITS_VARY
target/alpha: Enable TARGET_PAGE_BITS_VARY for user-only
target/arm: Enable TARGET_PAGE_BITS_VARY for AArch64 user-only
target/ppc: Enable TARGET_PAGE_BITS_VARY for user-only
linux-user: Remove pgb_dynamic alignment assertion
tcg/optimize: fix uninitialized variable
linux-user: Rewrite shmat

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# gpg: Signature made Fri 01 Mar 2024 23:04:52 GMT
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# 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-20240301' of https://gitlab.com/rth7680/qemu: (60 commits)
tests/tcg: Check that shmat() does not break /proc/self/maps
linux-user: Rewrite target_shmat
linux-user: Add strace for shmat
linux-user/loongarch64: Remove TARGET_FORCE_SHMLBA
linux-user/x86_64: Handle the vsyscall page in open_self_maps_{2,4}
tcg/optimize: fix uninitialized variable
linux-user: Remove pgb_dynamic alignment assertion
target/alpha: Enable TARGET_PAGE_BITS_VARY for user-only
target/ppc: Enable TARGET_PAGE_BITS_VARY for user-only
linux-user: Bound mmap_min_addr by host page size
target/arm: Enable TARGET_PAGE_BITS_VARY for AArch64 user-only
linux-user: Allow TARGET_PAGE_BITS_VARY
accel/tcg: Disconnect TargetPageDataNode from page size
cpu: Remove page_size_init
*-user: Deprecate and disable -p pagesize
tests/tcg: Extend file in linux-madvise.c
tests/tcg: Remove run-test-mmap-*
linux-user: Split out mmap_h_gt_g
linux-user: Split out mmap_h_lt_g
linux-user: Split out mmap_h_eq_g
...

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

show more ...

linux-user: Rewrite target_shmat

Handle combined host and guest alignment requirements.
Handle host and guest page size differences.
Handle SHM_EXEC.

Resolves: https://gitlab.com/qemu-project/qemu/

linux-user: Rewrite target_shmat

Handle combined host and guest alignment requirements.
Handle host and guest page size differences.
Handle SHM_EXEC.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/115
Tested-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

linux-user: Split out mmap_h_gt_g

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Helge Deller <deller@gmx.de>
M

linux-user: Split out mmap_h_gt_g

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-24-richard.henderson@linaro.org>

show more ...

linux-user: Split out mmap_h_lt_g

Work much harder to get alignment and mapping beyond the end
of the file correct. Both of which are excercised by our
test-mmap for alpha (8k pages) on any 4k page

linux-user: Split out mmap_h_lt_g

Work much harder to get alignment and mapping beyond the end
of the file correct. Both of which are excercised by our
test-mmap for alpha (8k pages) on any 4k page host.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-23-richard.henderson@linaro.org>

show more ...

linux-user: Split out mmap_h_eq_g

Move the MAX_FIXED_NOREPLACE check for reserved_va earlier.
Move the computation of host_prot earlier.

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

linux-user: Split out mmap_h_eq_g

Move the MAX_FIXED_NOREPLACE check for reserved_va earlier.
Move the computation of host_prot earlier.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-22-richard.henderson@linaro.org>

show more ...

linux-user: Use do_munmap for target_mmap failure

For the cases for which the host mmap succeeds, but does
not yield the desired address, use do_munmap to restore
the reserved_va memory reservation.

linux-user: Use do_munmap for target_mmap failure

For the cases for which the host mmap succeeds, but does
not yield the desired address, use do_munmap to restore
the reserved_va memory reservation.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

linux-user: Split out do_munmap

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user: Do early mmap placement only for reserved_va

For reserved_va, place all non-fixed maps then proceed
as for MAP_FIXED.

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

linux-user: Do early mmap placement only for reserved_va

For reserved_va, place all non-fixed maps then proceed
as for MAP_FIXED.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-21-richard.henderson@linaro.org>

show more ...

linux-user: Split out mmap_end

Use a subroutine instead of a goto within target_mmap__locked.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.hende

linux-user: Split out mmap_end

Use a subroutine instead of a goto within target_mmap__locked.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-20-richard.henderson@linaro.org>

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linux-user: Fix sub-host-page mmap

We cannot skip over the_end1 to the_end, because we fail to
record the validity of the guest page with the interval tree.
Remove "the_end" and rename "the_end1" to

linux-user: Fix sub-host-page mmap

We cannot skip over the_end1 to the_end, because we fail to
record the validity of the guest page with the interval tree.
Remove "the_end" and rename "the_end1" to "the_end".

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-19-richard.henderson@linaro.org>

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linux-user: Move some mmap checks outside the lock

Basic validation of operands does not require the lock.
Hoist them from target_mmap__locked back into target_mmap.

Reviewed-by: Philippe Mathieu-D

linux-user: Move some mmap checks outside the lock

Basic validation of operands does not require the lock.
Hoist them from target_mmap__locked back into target_mmap.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-18-richard.henderson@linaro.org>

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linux-user: Split out target_mmap__locked

All "goto fail" may be transformed to "return -1".

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.hender

linux-user: Split out target_mmap__locked

All "goto fail" may be transformed to "return -1".

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-17-richard.henderson@linaro.org>

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linux-user: Remove HOST_PAGE_ALIGN from mmap.c

This removes a hidden use of qemu_host_page_size, using instead
the existing host_page_size local within each function.

Signed-off-by: Richard Henders

linux-user: Remove HOST_PAGE_ALIGN from mmap.c

This removes a hidden use of qemu_host_page_size, using instead
the existing host_page_size local within each function.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-11-richard.henderson@linaro.org>

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linux-user: Remove REAL_HOST_PAGE_ALIGN from mmap.c

We already have qemu_real_host_page_size() in a local variable.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard He

linux-user: Remove REAL_HOST_PAGE_ALIGN from mmap.c

We already have qemu_real_host_page_size() in a local variable.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-10-richard.henderson@linaro.org>

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linux-user: Remove qemu_host_page_{size, mask} from mmap.c

Use qemu_real_host_page_size instead.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@l

linux-user: Remove qemu_host_page_{size, mask} from mmap.c

Use qemu_real_host_page_size instead.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-9-richard.henderson@linaro.org>

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