diff mbox series

[v3,15/15] KVM: arm64: Allow the use of SVE+NV

Message ID 20240620164653.1130714-16-oliver.upton@linux.dev (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: nv: FPSIMD/SVE, plus some other CPTR goodies | expand

Commit Message

Oliver Upton June 20, 2024, 4:46 p.m. UTC 
Allow SVE and NV to mix now that everything is in place to handle it
correctly.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
 arch/arm64/kvm/arm.c    | 5 -----
 arch/arm64/kvm/nested.c | 3 +--
 2 files changed, 1 insertion(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 9996a989b52e..e2c934728f73 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1419,11 +1419,6 @@  static int kvm_vcpu_init_check_features(struct kvm_vcpu *vcpu,
 	    test_bit(KVM_ARM_VCPU_PTRAUTH_GENERIC, &features))
 		return -EINVAL;
 
-	/* Disallow NV+SVE for the time being */
-	if (test_bit(KVM_ARM_VCPU_HAS_EL2, &features) &&
-	    test_bit(KVM_ARM_VCPU_SVE, &features))
-		return -EINVAL;
-
 	if (!test_bit(KVM_ARM_VCPU_EL1_32BIT, &features))
 		return 0;
 
diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
index 6813c7c7f00a..0aefc3e1b9a7 100644
--- a/arch/arm64/kvm/nested.c
+++ b/arch/arm64/kvm/nested.c
@@ -41,13 +41,12 @@  static u64 limit_nv_id_reg(u32 id, u64 val)
 		break;
 
 	case SYS_ID_AA64PFR0_EL1:
-		/* No AMU, MPAM, S-EL2, RAS or SVE */
+		/* No AMU, MPAM, S-EL2, or RAS */
 		val &= ~(GENMASK_ULL(55, 52)	|
 			 NV_FTR(PFR0, AMU)	|
 			 NV_FTR(PFR0, MPAM)	|
 			 NV_FTR(PFR0, SEL2)	|
 			 NV_FTR(PFR0, RAS)	|
-			 NV_FTR(PFR0, SVE)	|
 			 NV_FTR(PFR0, EL3)	|
 			 NV_FTR(PFR0, EL2)	|
 			 NV_FTR(PFR0, EL1));