KVM: arm64: Don't advertise unsupported features for protected guests

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Both SVE and PMUv3 are treated as "restricted" features for protected
guests and attempts to access their corresponding architectural state
from a protected guest result in an undefined exception being injected
by the hypervisor.

Since these exceptions are unexpected and typically fatal for the guest,
don't advertise these features for protected guests.

Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Tested-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Link: https://patch.msgid.link/20260330144841.26181-6-will@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Will Deacon 2026-03-30 15:48:06 +01:00 • committed by Marc Zyngier

parent ff1e7f9897

commit be3473c338

1 changed files with 0 additions and 2 deletions

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arch/arm64/include/asm/kvm_pkvm.h

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