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KVM: arm64: Convert SCTLR_EL1 RES0 handling to compute_reg_res0_bits()

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While SCTLR_EL1 cannot be RES0, convert it to the same infrastructure
anyway, as it make things cleaner.

Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2025-09-18 16:14:01 +01:00
parent 4870a8c1d1
commit d2a1d78ce5
1 changed files with 5 additions and 5 deletions
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10
arch/arm64/kvm/config.c
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@ -1128,6 +1128,9 @@ static const struct reg_bits_to_feat_map sctlr_el1_feat_map[] = {
FEAT_AA64EL1),
};
static const DECLARE_FEAT_MAP(sctlr_el1_desc, SCTLR_EL1,
sctlr_el1_feat_map, FEAT_AA64EL1);
static const struct reg_bits_to_feat_map mdcr_el2_feat_map[] = {
NEEDS_FEAT(MDCR_EL2_EBWE, FEAT_Debugv8p9),
NEEDS_FEAT(MDCR_EL2_TDOSA, FEAT_DoubleLock),
@ -1200,8 +1203,7 @@ void __init check_feature_map(void)
check_reg_desc(&hcr_desc);
check_reg_desc(&sctlr2_desc);
check_reg_desc(&tcr2_el2_desc);
check_feat_map(sctlr_el1_feat_map, ARRAY_SIZE(sctlr_el1_feat_map),
SCTLR_EL1_RES0, "SCTLR_EL1");
check_reg_desc(&sctlr_el1_desc);
check_feat_map(mdcr_el2_feat_map, ARRAY_SIZE(mdcr_el2_feat_map),
MDCR_EL2_RES0, "MDCR_EL2");
}
@ -1411,9 +1413,7 @@ void get_reg_fixed_bits(struct kvm *kvm, enum vcpu_sysreg reg, u64 *res0, u64 *r
*res1 = TCR2_EL2_RES1;
break;
case SCTLR_EL1:
*res0 = compute_res0_bits(kvm, sctlr_el1_feat_map,
ARRAY_SIZE(sctlr_el1_feat_map), 0, 0);
*res0 |= SCTLR_EL1_RES0;
*res0 = compute_reg_res0_bits(kvm, &sctlr_el1_desc, 0, 0);
*res1 = SCTLR_EL1_RES1;
break;
case MDCR_EL2: