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author | Marc Zyngier | 2020-11-12 18:49:28 +0000 |
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committer | Marc Zyngier | 2020-11-27 11:40:47 +0000 |
commit | b0737e999ec0af007b10ac0b7db97932394a248f (patch) | |
tree | c65c0e70f53ff2dcc9e3e4ec45844eeccbd4bc9b /Documentation/sh/new-machine.rst | |
parent | 77da43039ab5cfc9631159fd87fe38d4c34cdaf5 (diff) |
KVM: arm64: Inject UNDEF on PMU access when no PMU configured
The ARMv8 architecture says that in the absence of FEAT_PMUv3,
all the PMU-related register generate an UNDEF. Let's make
sure that all our PMU handers catch this case by hooking into
check_pmu_access_disabled(), and add checks in a couple of
other places.
Note that we still cannot deliver an exception into the guest
as the offending cases are already caught by the RAZ/WI handling.
But this puts us one step away to architectural compliance.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'Documentation/sh/new-machine.rst')
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