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Relatively few objects in qemu care about watchpoints, so split
out to a new header. Removes an instance of CONFIG_USER_ONLY
from hw/core/cpu.h.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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While some of these files are built exactly once, due
to being in only libuser_ss or libsystem_ss, some of
the includes that they depend on require CONFIG_USER_ONLY.
So make use of the common infrastructure to allow that.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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At some point cputlb.c stopped depending on the
"exec/memory-internal.h" header. Clean that now.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250317161329.40300-2-philmd@linaro.org>
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Convert the existing includes with sed.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Convert the existing includes with sed.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Convert the existing includes with
sed -i ,exec/memory.h,system/memory.h,g
Move the include within cpu-all.h into a !CONFIG_USER_ONLY block.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Split out mmap_lock, et al from page-protection.h
to a new header.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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The mmap_lock is user-only, whereas watchpoint.c
is only compiled for system mode.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Add a new family of translator load functions which take
an absolute endianness value in the form of MO_BE/MO_LE.
Expand the other translator_ld* functions on top of this.
Remove exec/tswap.h from translator.c.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Cache the mmu index in DisasContextBase.
Perform the read on host endianness, which lets us
share code with the translator_ld fast path.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Perform aligned atomic reads in translator_ld, if possible.
According to
https://lore.kernel.org/qemu-devel/20240607101403.1109-1-jim.shu@sifive.com/
this is required for RISC-V Ziccif.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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These need to be per-target for 'abi_ptr' and endianness.
These expand inline to the *_mmu api with a lookup of the
target's cpu_mmu_index() and ra == 0.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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These need to be per-target for 'abi_ptr'. Expand inline to
the *_data_ra api with ra == 0.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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These need to be per-target for 'abi_ptr'. Expand inline to
the *_mmuidx_ra api with a lookup of the target's cpu_mmu_index().
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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These need to be per-target for 'abi_ptr'. Expand inline to
the *_mmu api with trivial massaging of the arguments.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Use vaddr only for the newest api, because it has the least
number of uses and therefore is the easiest to audit.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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These routines are buggy in multiple ways:
- Use of target-endian loads, then a bswap that
depends on the host endiannness.
- A non-unwinding code load must set_helper_retaddr 1,
which is magic within adjust_signal_pc.
- cpu_ldq_code_mmu used MMU_DATA_LOAD
The bugs are hidden because all current uses of cpu_ld*_code_mmu
are from system mode.
Fixes: 2899062614a ("accel/tcg: Add cpu_ld*_code_mmu")
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We assert that env immediately follows CPUState in cpu-all.h.
Change the offsetof expressions to be based on CPUState instead
of ArchCPU.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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CONFIG_USER_ONLY == !CONFIG_SYSTEM_ONLY.
Therefore it's cleaner to just add to user_ss.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Commit 3f2a05b31ee9 ("target/i386: Reset TSCs of parked vCPUs too on VM
reset") introduced a way to reset TSCs of parked vCPUs during VM reset to
prevent them getting desynchronized with the online vCPUs and therefore
causing the KVM PV clock to lose PVCLOCK_TSC_STABLE_BIT.
The way this was done was by registering a parked vCPU-specific QEMU reset
callback via qemu_register_reset().
However, it turns out that on particularly device-rich VMs QEMU reset
callbacks can take a long time to execute (which isn't surprising,
considering that they involve resetting all of VM devices).
In particular, their total runtime can exceed the 1-second TSC
synchronization window introduced in KVM commit 5d3cb0f6a8e3 ("KVM:
Improve TSC offset matching").
Since the TSCs of online vCPUs are only reset from "synchronize_post_reset"
AccelOps handler (which runs after all qemu_register_reset() handlers) this
essentially makes that fix ineffective on these VMs.
The easiest way to guarantee that these parked vCPUs are reset at the same
time as the online ones (regardless how long it takes for VM devices to
reset) is to piggyback on post-reset vCPU synchronization handler for one
of online vCPUs - as there is no generic post-reset AccelOps handler that
isn't per-vCPU.
The first online vCPU was selected for that since it is easily available
under "first_cpu" define.
This does not create an ordering issue since the order of vCPU TSC resets
does not matter.
Fixes: 3f2a05b31ee9 ("target/i386: Reset TSCs of parked vCPUs too on VM reset")
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Link: https://lore.kernel.org/r/e8b85a5915f79aa177ca49eccf0e9b534470c1cd.1743099810.git.maciej.szmigiero@oracle.com
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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CpuState caches its CPUClass since commit 6fbdff87062
("cpu: cache CPUClass in CPUState for hot code paths"),
use it.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250122093028.52416-6-philmd@linaro.org>
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Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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GETPC_ADJ is only used within accel/tcg/, no need to
expose it to all the code base.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250308072348.65723-2-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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All that is required is to avoid including exec-all.h.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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All that is required is to use cpu-common.h instead of exec-all.h.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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All that is required is to avoid including exec-all.h.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Now that tcg-accel-ops.c uses cputlb.h instead of exec-all.h,
it can be built once.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Move CPU TLB related methods to "exec/cputlb.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20241114011310.3615-19-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Move CPU TLB related methods to "exec/cputlb.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241114011310.3615-20-philmd@linaro.org>
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Move tb_check_watchpoint declaration from tb-internal.h, which is
still target-specific, to internal-common.h, which isn't.
Otherwise, all that is required to build watchpoint.c once is
to include the new exec/cpu-interrupt.h instead of exec/exec-all.h.
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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CPU_TLB_DYN_*_BITS definitions are only used by accel/tcg/cputlb.c
and accel/tcg/translate-all.c. Move them to accel/tcg/tb-internal.h.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250305191859.71608-1-philmd@linaro.org>
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Missed in commit b86f59c7155 ("accel: replace struct CpusAccel
with AccelOpsClass") which removed the single CpusAccel use.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-7-philmd@linaro.org>
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cpu_memory_rw_debug() system implementation is defined in
system/physmem.c. Move the user one to accel/tcg/user-exec.c
to simplify cpu-target.c maintenance.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250217130610.18313-6-philmd@linaro.org>
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Commit 35c653c4029 ("tcg: Add 128-bit guest memory
primitives") introduced the use of bswap128() which is
declared in "qemu/int128.h", commit de95016dfbf ("accel/tcg:
Implement helper_{ld,st}*_mmu for user-only") introduced the
other bswap*() uses, which are declared in "qemu/bswap.h".
Include the missing headers.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250217130610.18313-3-philmd@linaro.org>
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The heavily imported "system/cpus.h" header includes "accel-ops.h"
to get AccelOpsClass type declaration. Reduce headers pressure by
forward declaring it in "qemu/typedefs.h", where we already
declare the AccelCPUState type.
Reduce "system/cpus.h" inclusions by only including
"system/accel-ops.h" when necessary.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-14-philmd@linaro.org>
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AccelCPUClass is for accelerator to initialize target specific
features of a vCPU. Not really related to hardware emulation,
rename "hw/core/accel-cpu.h" as "accel/accel-cpu-target.h"
(using the explicit -target suffix).
More importantly, target specific header often access the
target specific definitions which are in each target/FOO/cpu.h
header, usually included generically as "cpu.h" relative to
target/FOO/. However, there is already a "cpu.h" in hw/core/
which takes precedence. This change allows "accel-cpu-target.h"
to include a target "cpu.h".
Mechanical change doing:
$ git mv include/hw/core/accel-cpu.h \
include/accel/accel-cpu-target.h
$ sed -i -e 's,hw/core/accel-cpu.h,accel/accel-cpu-target.h,' \
$(git grep -l hw/core/accel-cpu.h)
and renaming header guard 'ACCEL_CPU_TARGET_H'.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-12-philmd@linaro.org>
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TCGCPUOps structure makes more sense in the accelerator context
rather than hardware emulation. Move it under the accel/tcg/ scope.
Mechanical change doing:
$ sed -i -e 's,hw/core/tcg-cpu-ops.h,accel/tcg/cpu-ops.h,g' \
$(git grep -l hw/core/tcg-cpu-ops.h)
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-11-philmd@linaro.org>
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Since commit 740b1759734 ("cpu-timers, icount: new modules")
we don't need to expose icount_align_option to all the
system code, we can restrict it to TCG. Since it is used as
a boolean, declare it as 'bool' type.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-10-philmd@linaro.org>
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Move CPU TLB related methods to accel/tcg/ scope,
in "internal-common.h".
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-9-philmd@linaro.org>
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While cpu-exec.c is build for each target,tcg_flags helpers
aren't target specific. Move them to cpu-exec-common.c to
build them once.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-8-philmd@linaro.org>
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There is no generic acceleration, we have to use specific
implementations. Make the base class abstract.
Fixes: b14a0b7469fa ("accel: Use QOM classes for accel types")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200129212345.20547-3-philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Use the tcg_enabled() check so the compiler can elide
the call when TCG isn't available, allowing to remove
the tb_flush() stub.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-4-philmd@linaro.org>
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XenPVH requires the PCIe/GPEX device. Add it to Kconfig
to avoid when configuring using --without-default-devices:
/usr/bin/ld: libqemu-aarch64-softmmu.a.p/hw_xen_xen-pvh-common.c.o: in function `xenpvh_gpex_init':
hw/xen/xen-pvh-common.c:174: undefined reference to `gpex_set_irq_num'
/usr/bin/ld: libqemu-aarch64-softmmu.a.p/hw_xen_xen-hvm-common.c.o: in function `pci_dev_bus_num':
include/hw/pci/pci.h:337: undefined reference to `pci_bus_num'
/usr/bin/ld: include/hw/pci/pci.h:337: undefined reference to `pci_bus_num'
/usr/bin/ld: include/hw/pci/pci.h:337: undefined reference to `pci_bus_num'
/usr/bin/ld: include/hw/pci/pci.h:337: undefined reference to `pci_bus_num'
/usr/bin/ld: include/hw/pci/pci.h:337: undefined reference to `pci_bus_num'
/usr/bin/ld: libqemu-aarch64-softmmu.a.p/hw_xen_xen-hvm-common.c.o: in function `cpu_ioreq_config':
hw/xen/xen-hvm-common.c:412: undefined reference to `pci_host_config_read_common'
/usr/bin/ld: hw/xen/xen-hvm-common.c:428: undefined reference to `pci_host_config_read_common'
/usr/bin/ld: hw/xen/xen-hvm-common.c:438: undefined reference to `pci_host_config_write_common'
Fixes: f22e598a72c ("hw/xen: pvh-common: Add support for creating PCIe/GPEX")
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Message-Id: <20250218162618.46167-2-philmd@linaro.org>
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tcg: Remove last traces of TCG_TARGET_NEED_POOL_LABELS
tcg: Cleanups after disallowing 64-on-32
tcg: Introduce constraint for zero register
tcg: Remove TCG_TARGET_HAS_{br,set}cond2 from riscv and loongarch64
tcg/i386: Use tcg_{high,unsigned}_cond in tcg_out_brcond2
linux-user: Move TARGET_SA_RESTORER out of generic/signal.h
linux-user: Fix alignment when unmapping excess reservation
target/sparc: Fix register selection for all F*TOx and FxTO* instructions
target/sparc: Fix gdbstub incorrectly handling registers f32-f62
target/sparc: fake UltraSPARC T1 PCR and PIC registers
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# gpg: Signature made Wed 19 Feb 2025 00:30:23 HKT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
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* tag 'pull-tcg-20250215-3' of https://gitlab.com/rth7680/qemu: (28 commits)
tcg: Remove TCG_TARGET_HAS_{br,set}cond2 from riscv and loongarch64
tcg/i386: Use tcg_{high,unsigned}_cond in tcg_out_brcond2
target/sparc: fake UltraSPARC T1 PCR and PIC registers
target/sparc: Fix gdbstub incorrectly handling registers f32-f62
target/sparc: Fix register selection for all F*TOx and FxTO* instructions
linux-user: Move TARGET_SA_RESTORER out of generic/signal.h
elfload: Fix alignment when unmapping excess reservation
tcg/sparc64: Use 'z' constraint
tcg/riscv: Use 'z' constraint
tcg/mips: Use 'z' constraint
tcg/loongarch64: Use 'z' constraint
tcg/aarch64: Use 'z' constraint
tcg: Introduce the 'z' constraint for a hardware zero register
include/exec: Use uintptr_t in CPUTLBEntry
include/exec: Change vaddr to uintptr_t
target/mips: Use VADDR_PRIx for logging pc_next
target/loongarch: Use VADDR_PRIx for logging pc_next
accel/tcg: Fix tlb_set_page_with_attrs, tlb_set_page
plugins: Fix qemu_plugin_read_memory_vaddr parameters
tcg: Replace addr{lo,hi}_reg with addr_reg in TCGLabelQemuLdst
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Since we no longer support 64-bit guests on 32-bit hosts,
we can use a 32-bit type on a 32-bit host. This shrinks
the size of the structure to 16 bytes on a 32-bit host.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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The declarations use vaddr for size.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This is now prohibited in configuration.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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The list of hwpoison pages used to remap the memory on reset
is based on the backend real page size.
To correctly handle hugetlb, we must mmap(MAP_FIXED) a complete
hugetlb page; hugetlb pages cannot be partially mapped.
Signed-off-by: William Roche <william.roche@oracle.com>
Co-developed-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20250211212707.302391-2-william.roche@oracle.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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This reverts commit dae0ec159f9 ("accel: build tcg modular").
The attempt was only enabled for x86, only modularized a small
portion of tcg, and in more than 3 years there have been no
follow-ups to improve the situation.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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