diff mbox series

[v2,12/12] KVM: arm64: Mark CMOW as allowed for protected VMs

Message ID 20231206100503.564090-13-tabba@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: Fixes to fine grain traps and pKVM traps | expand

Commit Message

Fuad Tabba Dec. 6, 2023, 10:05 a.m. UTC 
Cache maintenance operations are not trapped for protected VMs,
and shouldn't be. Mark the feature as allowed.

Signed-off-by: Fuad Tabba <tabba@google.com>
---
 arch/arm64/kvm/hyp/include/nvhe/fixed_config.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h b/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
index e91922daa8ca..e628541585fc 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
@@ -101,6 +101,7 @@ 
  * - Privileged Access Never
  * - SError interrupt exceptions from speculative reads
  * - Enhanced Translation Synchronization
+ * - Control for cache maintenance permission
  */
 #define PVM_ID_AA64MMFR1_ALLOW (\
 	ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_HAFDBS) | \
@@ -108,7 +109,8 @@ 
 	ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_HPDS) | \
 	ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_PAN) | \
 	ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_SpecSEI) | \
-	ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_ETS) \
+	ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_ETS) | \
+	ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_CMOW) \
 	)
 
 /*