KVM: arm64: nv: Filter out unsupported features from ID regs

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As there is a number of features that we either can't support,
or don't want to support right away with NV, let's add some
basic filtering so that we don't advertize silly things to the
EL2 guest.

Whilst we are at it, advertize FEAT_TTL as well as FEAT_GTG, which
the NV implementation will implement.

Reviewed-by: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230209175820.1939006-18-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Marc Zyngier 2023-02-09 17:58:19 +00:00 • committed by Oliver Upton

parent 280b748e87

commit 9f75b6d447

4 changed files with 172 additions and 1 deletions

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6

arch/arm64/include/asm/kvm_nested.h

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arch/arm64/kvm/Makefile

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162

arch/arm64/kvm/nested.c

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3

arch/arm64/kvm/sys_regs.c

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