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Akihiko Odaki bedcc7465d target/arm: Define raw write for PMU CLR registers ... Raw writes to PMCNTENCLR and PMCNTENCLR_EL0 incorrectly used their default write function, which clears written bits instead of writes the raw value. PMINTENCLR and PMINTENCLR_EL1 are similar registers, but they instead had ARM_CP_NO_RAW. Commit 7a0e58fa64 ("target-arm: Split NO_MIGRATE into ALIAS and NO_RAW") sugguests ARM_CP_ALIAS should be used instead of ARM_CP_NO_RAW in such a case: > We currently mark ARM coprocessor/system register definitions with > the flag ARM_CP_NO_MIGRATE for two different reasons: > 1) register is an alias on to state that's also visible via > some other register, and that other register is the one > responsible for migrating the state > 2) register is not actually state at all (for instance the TLB > or cache maintenance operation "registers") and it makes no > sense to attempt to migrate it or otherwise access the raw state > > This works fine for identifying which registers should be ignored > when performing migration, but we also use the same functions for > synchronizing system register state between QEMU and the kernel > when using KVM. In this case we don't want to try to sync state > into registers in category 2, but we do want to sync into registers > in category 1, because the kernel might have picked a different > one of the aliases as its choice for which one to expose for > migration. These registers fall in category 1 (ARM_CP_ALIAS), not category 2 (ARM_CP_NO_RAW). ARM_CP_NO_RAW also has another undesired side effect that hides registers from GDB. Properly set raw write functions and drop the ARM_CP_NO_RAW flag from PMINTENCLR and PMINTENCLR_EL1; this fixes GDB/KVM state synchronization of PMCNTENCLR and PMCNTENCLR_EL0, and exposes all these four registers to GDB. It is not necessary to add ARM_CP_ALIAS to these registers because the flag is already set. Signed-off-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp> Message-id: 20250531-clr-v3-1-377f9bf1746d@rsg.ci.i.u-tokyo.ac.jp Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>		2 weeks ago
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hvf	hvf: avoid repeatedly setting trap debug for each cpu	2 months ago
tcg	target/arm: Only link with zlib when TCG is enabled	1 month ago
Kconfig	kconfig: express dependency of individual boards on libfdt	1 year ago
arch_dump.c	target/arm/arch_dump: remove TARGET_AARCH64 conditionals	2 months ago
arm-powerctl.c	include: Rename sysemu/ -> system/	6 months ago
arm-powerctl.h	…
arm-qmp-cmds.c	target/arm/qmp: Include missing 'cpu.h' header	1 month ago
common-semi-target.h	target/arm/common-semi-target.h: Remove unnecessary boot.h include	2 years ago
cortex-regs.c	target/arm: Saturate L2CTLR_EL1 core count field rather than overflowing	2 years ago
cpregs.h	target/arm/cpregs: Include missing 'target/arm/cpu.h' header	1 month ago
cpu-features.h	target/arm/cpu-features: Include missing 'cpu.h' header	1 month ago
cpu-param.h	accel/tcg: Move TARGET_TAGGED_ADDRESSES to TCGCPUOps.untagged_addr	2 months ago
cpu-qom.h	target/arm: Remove TYPE_AARCH64_CPU	2 months ago
cpu.c	target/arm: Fill in TCGCPUOps.pointer_wrap	1 month ago
cpu.h	target/arm: Remove TYPE_AARCH64_CPU	2 months ago
cpu32-stubs.c	target/arm/cpu: remove TARGET_AARCH64 in arm_cpu_finalize_features	2 months ago
cpu64.c	target/arm: Remove TYPE_AARCH64_CPU	2 months ago
debug_helper.c	target/arm/debug_helper: remove target_ulong	2 months ago
gdbstub.c	target/arm: Handle AArch64 gdb read/write regs in TYPE_ARM_CPU	2 months ago
gdbstub64.c	exec/cpu-all: remove exec/target_page include	2 months ago
gtimer.h	target/arm: Document the architectural names of our GTIMERs	4 months ago
helper.c	target/arm: Define raw write for PMU CLR registers	2 weeks ago
helper.h	target/arm/helper: extract common helpers	2 months ago
hvf-stub.c	target/arm/hvf_arm: Avoid using poisoned CONFIG_HVF definition	1 month ago
hvf_arm.h	target/arm/hvf: Include missing 'cpu-qom.h' header	1 month ago
hyp_gdbstub.c	target/arm: Replace target_ulong -> vaddr for HWBreakpoint	2 months ago
idau.h	Use DECLARE_*CHECKER* macros	5 years ago
internals.h	target/arm: Replace target_ulong -> vaddr for HWBreakpoint	2 months ago
kvm-consts.h	exec: Rename NEED_CPU_H -> COMPILING_PER_TARGET	1 year ago
kvm-stub.c	target/arm/kvm-stub: add missing stubs	2 months ago
kvm.c	kvm: Introduce kvm_arch_pre_create_vcpu()	1 month ago
kvm_arm.h	target/arm/kvm: Include missing 'cpu-qom.h' header	1 month ago
machine.c	target/arm/machine: move cpu_post_load kvm bits to kvm_arm_cpu_post_load function	2 months ago
meson.build	target-arm queue:	4 weeks ago
multiprocessing.h	target/arm: Expose arm_cpu_mp_affinity() in 'multiprocessing.h' header	1 year ago
ptw.c	target/arm/ptw: replace TARGET_AARCH64 by CONFIG_ATOMIC64 from arm_casq_ptw	2 months ago
syndrome.h	target/arm: fix exception syndrome for AArch32 bkpt insn	1 year ago
tcg-stubs.c	target/arm: Unexport assert_hflags_rebuild_correctly	2 months ago
trace-events	target/arm: Implement FEAT_ECV CNTPOFF_EL2 handling	1 year ago
trace.h	…
vfp_fpscr.c	target/arm: Rename vfp_helper.c to vfp_fpscr.c	4 months ago