Marc Zyngier ebff0b0e3d KVM: arm64: Reset the PMU in preemptible context ... We've become very cautious to now always reset the vcpu when nothing is loaded on the physical CPU. To do so, we now disable preemption and do a kvm_arch_vcpu_put() to make sure we have all the state in memory (and that it won't be loaded behind out back). This now causes issues with resetting the PMU, which calls into perf. Perf itself uses mutexes, which clashes with the lack of preemption. It is worth realizing that the PMU is fully emulated, and that no PMU state is ever loaded on the physical CPU. This means we can perfectly reset the PMU outside of the non-preemptible section. Fixes: e761a927bc ("KVM: arm/arm64: Reset the VCPU without preemption and vcpu state loaded") Reported-by: Julien Grall <julien.grall@arm.com> Tested-by: Julien Grall <julien.grall@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>		2019-03-19 17:56:24 +00:00
..
hyp	ARM: some cleanups, direct physical timer assignment, cache sanitization	2019-03-15 15:00:28 -07:00
debug.c	arm/arm64: KVM: Introduce kvm_call_hyp_ret()	2019-02-19 21:05:24 +00:00
fpsimd.c	KVM: arm64: Avoid mistaken attempts to save SVE state for vcpus	2018-06-21 09:14:44 +01:00
guest.c	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
handle_exit.c	* ARM: selftests improvements, large PUD support for HugeTLB,	2018-12-26 11:46:28 -08:00
hyp-init.S	arm64: KVM: Enable Common Not Private translations	2018-09-18 12:03:34 +01:00
hyp.S	arm64: KVM: Drop VHE-specific HYP call stub	2019-02-19 21:05:28 +00:00
inject_fault.c	arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS	2018-07-21 16:02:30 +01:00
irq.h
Kconfig	treewide: surround Kconfig file paths with double quotes	2018-12-22 00:25:54 +09:00
Makefile	KVM: arm/arm64: Prefix header search paths with $(srctree)/	2019-02-19 21:05:53 +00:00
regmap.c	kvm/arm: use PSR_AA32 definitions	2018-07-05 17:24:15 +01:00
reset.c	KVM: arm64: Reset the PMU in preemptible context	2019-03-19 17:56:24 +00:00
sys_regs_generic_v8.c	KVM: arm64: Rewrite system register accessors to read/write functions	2018-03-19 10:53:16 +00:00
sys_regs.c	ARM: some cleanups, direct physical timer assignment, cache sanitization	2019-03-15 15:00:28 -07:00
sys_regs.h	arm64: KVM: Add trapped system register access tracepoint	2018-12-19 17:47:08 +00:00
trace.h	arm64: KVM: Add trapped system register access tracepoint	2018-12-19 17:47:08 +00:00
va_layout.c	arm64: KVM: Allow mapping of vectors outside of the RAM region	2018-03-19 13:06:46 +00:00
vgic-sys-reg-v3.c