Marc Zyngier d96ef8fa95 KVM: arm64: Save the host's PtrAuth keys in non-preemptible context ... commit ef3e40a7ea upstream. When using the PtrAuth feature in a guest, we need to save the host's keys before allowing the guest to program them. For that, we dump them in a per-CPU data structure (the so called host context). But both call sites that do this are in preemptible context, which may end up in disaster should the vcpu thread get preempted before reentering the guest. Instead, save the keys eagerly on each vcpu_load(). This has an increased overhead, but is at least safe. Cc: stable@vger.kernel.org Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-06-17 16:40:38 +02:00
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hyp	KVM: arm64: Fix 32bit PC wrap-around	2020-05-14 07:58:26 +02:00
vgic	KVM: arm: vgic: Synchronize the whole guest on GIC{D,R}_I{S,C}ACTIVER read	2020-05-20 08:20:04 +02:00
aarch32.c	KVM: arm64: Synchronize sysreg state on injecting an AArch32 exception	2020-06-17 16:40:38 +02:00
arch_timer.c	KVM: arm64: Treat emulated TVAL TimerValue as a signed 32-bit integer	2020-02-14 16:34:18 -05:00
arm.c	KVM: arm64: Save the host's PtrAuth keys in non-preemptible context	2020-06-17 16:40:38 +02:00
mmio.c	KVM: arm64: Only sign-extend MMIO up to register width	2020-02-11 04:35:16 -08:00
mmu.c	KVM: arm/arm64: Fix young bit from mmu notifier	2020-02-14 16:34:17 -05:00
perf.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
pmu.c	KVM: arm64: pmu: Fix chained SW_INCR counters	2020-02-14 16:34:17 -05:00
psci.c	KVM: arm/arm64: Add save/restore support for firmware workaround state	2019-07-05 13:56:27 +01:00
trace.h	KVM: arm/arm64: Fix TRACE_INCLUDE_PATH	2019-02-19 21:05:51 +00:00