diff options
| author | Marc Zyngier <maz@kernel.org> | 2024-07-03 16:47:43 +0100 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-07-03 22:46:14 +0000 |
| commit | 3cfde36df7aba306e31209ec882a9e015f2d5963 (patch) | |
| tree | 24e860a7137c2a57e2543b7fa036866c9cfc9b28 /arch/arm64/kvm/nested.c | |
| parent | 0feec7769a63ef15401a9820c2039e26f0391825 (diff) | |
KVM: arm64: nv: Truely enable nXS TLBI operations
Although we now have support for nXS-flavoured TLBI instructions,
we still don't expose the feature to the guest thanks to a mixture
of misleading comment and use of a bunch of magic values.
Fix the comment and correctly express the masking of LS64, which
is enough to expose nXS to the world. Not that anyone cares...
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240703154743.824824-1-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/kvm/nested.c')
| -rw-r--r-- | arch/arm64/kvm/nested.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c index 451926cb6c5d..4b51d7a59c2d 100644 --- a/arch/arm64/kvm/nested.c +++ b/arch/arm64/kvm/nested.c @@ -810,8 +810,8 @@ static u64 limit_nv_id_reg(u32 id, u64 val) break; case SYS_ID_AA64ISAR1_EL1: - /* Support everything but Spec Invalidation */ - val &= ~(GENMASK_ULL(63, 56) | + /* Support everything but Spec Invalidation and LS64 */ + val &= ~(NV_FTR(ISAR1, LS64) | NV_FTR(ISAR1, SPECRES)); break; |