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| author | Marc Zyngier <maz@kernel.org> | 2023-08-15 21:39:02 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-08-17 12:00:28 +0300 |
| commit | 03fb54d0aa73cc14e51f6611eb3289e4fec15184 (patch) | |
| tree | 93f719da7b0cc9fdcc8cc15fa90d56b1d10ee825 /arch/arm64/kvm/nested.c | |
| parent | a63cf31139b7f41d468dc8ef63dbf6bae213d960 (diff) | |
| download | linux-03fb54d0aa73cc14e51f6611eb3289e4fec15184.tar.xz | |
KVM: arm64: nv: Add support for HCRX_EL2
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
Diffstat (limited to 'arch/arm64/kvm/nested.c')
| -rw-r--r-- | arch/arm64/kvm/nested.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c index 3facd8918ae3..042695a210ce 100644 --- a/arch/arm64/kvm/nested.c +++ b/arch/arm64/kvm/nested.c @@ -117,7 +117,8 @@ void access_nested_id_reg(struct kvm_vcpu *v, struct sys_reg_params *p, break; case SYS_ID_AA64MMFR1_EL1: - val &= (NV_FTR(MMFR1, PAN) | + val &= (NV_FTR(MMFR1, HCX) | + NV_FTR(MMFR1, PAN) | NV_FTR(MMFR1, LO) | NV_FTR(MMFR1, HPDS) | NV_FTR(MMFR1, VH) | |