KVM: arm64: nv: Add support for FEAT_ATS1A

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Handling FEAT_ATS1A (which provides the AT S1E{1,2}A instructions)
is pretty easy, as it is just the usual AT without the permission
check.

This basically amounts to plumbing the instructions in the various
dispatch tables, and handling FEAT_ATS1A being disabled in the
ID registers.

Signed-off-by: Marc Zyngier <maz@kernel.org>

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This commit is contained in:

Marc Zyngier 2024-06-23 10:46:45 +01:00

parent 8df747f4f3

commit ff987ffc0c

4 changed files with 24 additions and 0 deletions

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1

arch/arm64/include/asm/sysreg.h

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10

arch/arm64/kvm/at.c

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2

arch/arm64/kvm/emulate-nested.c

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11

arch/arm64/kvm/sys_regs.c

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