KVM: arm64: nv: Add support for HCRX_EL2

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HCRX_EL2 has an interesting effect on HFGITR_EL2, as it conditions
the traps of TLBI*nXS.

Expand the FGT support to add a new Fine Grained Filter that will
get checked when the instruction gets trapped, allowing the shadow
register to override the trap as needed.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-29-maz@kernel.org

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This commit is contained in:

Marc Zyngier 2023-08-15 19:39:02 +01:00

parent a63cf31139

commit 03fb54d0aa

6 changed files with 83 additions and 37 deletions

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arch/arm64/include/asm/kvm_arm.h

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arch/arm64/include/asm/kvm_host.h

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arch/arm64/kvm/emulate-nested.c

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arch/arm64/kvm/hyp/include/hyp/switch.h

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arch/arm64/kvm/nested.c

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arch/arm64/kvm/sys_regs.c

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