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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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d9f89b4e92
kvm_pmu_overflow_set() is called from perf's interrupt handler, making the call of kvm_vgic_inject_irq() from it introduced with "KVM: arm/arm64: PMU: remove request-less vcpu kick" a really bad idea, as it's quite easy to try and retake a lock that the interrupted context is already holding. The fix is to use a vcpu kick, leaving the interrupt injection to kvm_pmu_sync_hwstate(), like it was doing before the refactoring. We don't just revert, though, because before the kick was request-less, leaving the vcpu exposed to the request-less vcpu kick race, and also because the kick was used unnecessarily from register access handlers. Reviewed-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
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.. | ||
hyp | ||
debug.c | ||
guest.c | ||
handle_exit.c | ||
hyp-init.S | ||
hyp.S | ||
inject_fault.c | ||
irq.h | ||
Kconfig | ||
Makefile | ||
regmap.c | ||
reset.c | ||
sys_regs_generic_v8.c | ||
sys_regs.c | ||
sys_regs.h | ||
trace.h | ||
vgic-sys-reg-v3.c |