[PATCH 6/8] KVM: arm64: Enforce absence of FEAT_TCR2 on TCR2_EL2

[Marc Zyngier]

Signed-off-by: Marc Zyngier <maz at kernel.org>
---
 arch/arm64/kvm/config.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/kvm/config.c b/arch/arm64/kvm/config.c
index b008551fcf7e9..0e6723bd75775 100644
--- a/arch/arm64/kvm/config.c
+++ b/arch/arm64/kvm/config.c
@@ -1024,7 +1024,7 @@ static const
 struct reg_to_feat_map sctlr2_feat_map = FEAT_MAP(SCTLR2_EL1, FEAT_SCTLR2,
 						  sctlr2_bit_feat_map);
 
-static const struct reg_bits_to_feat_map tcr2_el2_feat_map[] = {
+static const struct reg_bits_to_feat_map tcr2_el2_bit_feat_map[] = {
 	NEEDS_FEAT(TCR2_EL2_FNG1	|
 		   TCR2_EL2_FNG0	|
 		   TCR2_EL2_A2,
@@ -1046,6 +1046,10 @@ static const struct reg_bits_to_feat_map tcr2_el2_feat_map[] = {
 	NEEDS_FEAT(TCR2_EL2_PIE, FEAT_S1PIE),
 };
 
+static const
+struct reg_to_feat_map tcr2_el2_feat_map = FEAT_MAP(TCR2_EL2, FEAT_TCR2,
+						    tcr2_el2_bit_feat_map);
+
 static const struct reg_bits_to_feat_map sctlr_el1_feat_map[] = {
 	NEEDS_FEAT(SCTLR_EL1_CP15BEN	|
 		   SCTLR_EL1_ITD	|
@@ -1191,8 +1195,7 @@ void __init check_feature_map(void)
 	check_reg_feat_map(&hcrx_feat_map);
 	check_reg_feat_map(&hcr_feat_map);
 	check_reg_feat_map(&sctlr2_feat_map);
-	check_feat_map(tcr2_el2_feat_map, ARRAY_SIZE(tcr2_el2_feat_map),
-		       TCR2_EL2_RES0, "TCR2_EL2");
+	check_reg_feat_map(&tcr2_el2_feat_map);
 	check_feat_map(sctlr_el1_feat_map, ARRAY_SIZE(sctlr_el1_feat_map),
 		       SCTLR_EL1_RES0, "SCTLR_EL1");
 	check_feat_map(mdcr_el2_feat_map, ARRAY_SIZE(mdcr_el2_feat_map),
@@ -1400,9 +1403,7 @@ void get_reg_fixed_bits(struct kvm *kvm, enum vcpu_sysreg reg, u64 *res0, u64 *r
 		*res1 = SCTLR2_EL1_RES1;
 		break;
 	case TCR2_EL2:
-		*res0 = compute_res0_bits(kvm, tcr2_el2_feat_map,
-					  ARRAY_SIZE(tcr2_el2_feat_map), 0, 0);
-		*res0 |= TCR2_EL2_RES0;
+		*res0 = compute_reg_res0_bits(kvm, &tcr2_el2_feat_map, 0, 0);
 		*res1 = TCR2_EL2_RES1;
 		break;
 	case SCTLR_EL1:
-- 
2.39.2