dlan17/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: arm64: nv: Sanitise SCTLR_EL1.EPAN according to VM configuration

Browse Source 
Ensure that SCTLR_EL1.EPAN is RES0 when FEAT_PAN3 isn't supported.

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier
2024-08-30 12:04:20 +01:00
parent d6a01a2dc7
commit 2441418f3a
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm64/kvm/nested.c
+8
View File
@@ -1178,6 +1178,14 @@ int kvm_init_nv_sysregs(struct kvm *kvm)
if (!kvm_has_feat(kvm, ID_AA64PFR0_EL1, AMU, V1P1))
res0 |= ~(res0 | res1);
set_sysreg_masks(kvm, HAFGRTR_EL2, res0, res1);
/* SCTLR_EL1 */
res0 = SCTLR_EL1_RES0;
res1 = SCTLR_EL1_RES1;
if (!kvm_has_feat(kvm, ID_AA64MMFR1_EL1, PAN, PAN3))
res0 |= SCTLR_EL1_EPAN;
set_sysreg_masks(kvm, SCTLR_EL1, res0, res1);
out:
mutex_unlock(&kvm->arch.config_lock);