Will Deacon fd412846a6 KVM: arm64: Don't inherit exec permission across page-table levels ... commit b757b47a2f upstream. If a stage-2 page-table contains an executable, read-only mapping at the pte level (e.g. due to dirty logging being enabled), a subsequent write fault to the same page which tries to install a larger block mapping (e.g. due to dirty logging having been disabled) will erroneously inherit the exec permission and consequently skip I-cache invalidation for the rest of the block. Ensure that exec permission is only inherited by write faults when the new mapping is of the same size as the existing one. A subsequent instruction abort will result in I-cache invalidation for the entire block mapping. Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Quentin Perret <qperret@google.com> Reviewed-by: Quentin Perret <qperret@google.com> Cc: Marc Zyngier <maz@kernel.org> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200723101714.15873-1-will@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-08-05 09:59:51 +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: arm64: Don't inherit exec permission across page-table levels	2020-08-05 09:59:51 +02:00
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