Merge branch 'kvm-arm64/config-masks' into kvmarm/next

* kvm-arm64/config-masks:
  : More config-driven mask computation, courtesy of Marc Zyngier
  :
  : Converts more system registers to the config-driven computation of RESx
  : masks based on the advertised feature set
  KVM: arm64: Tighten the definition of FEAT_PMUv3p9
  KVM: arm64: Convert MDCR_EL2 to config-driven sanitisation
  KVM: arm64: Convert SCTLR_EL1 to config-driven sanitisation
  KVM: arm64: Convert TCR2_EL2 to config-driven sanitisation
  arm64: sysreg: Add THE/ASID2 controls to TCR2_ELx

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

1 files changed, 3 insertions, 57 deletions

diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
index 096747a61bf6..efb37aad11ec 100644
--- a/arch/arm64/kvm/nested.c
+++ b/arch/arm64/kvm/nested.c
@@ -1662,32 +1662,11 @@ int kvm_init_nv_sysregs(struct kvm_vcpu *vcpu)
 	set_sysreg_masks(kvm, HFGITR2_EL2, res0, res1);
 
 	/* TCR2_EL2 */
-	res0 = TCR2_EL2_RES0;
-	res1 = TCR2_EL2_RES1;
-	if (!kvm_has_feat(kvm, ID_AA64MMFR3_EL1, D128, IMP))
-		res0 |= (TCR2_EL2_DisCH0 | TCR2_EL2_DisCH1 | TCR2_EL2_D128);
-	if (!kvm_has_feat(kvm, ID_AA64MMFR3_EL1, MEC, IMP))
-		res0 |= TCR2_EL2_AMEC1 | TCR2_EL2_AMEC0;
-	if (!kvm_has_feat(kvm, ID_AA64MMFR1_EL1, HAFDBS, HAFT))
-		res0 |= TCR2_EL2_HAFT;
-	if (!kvm_has_feat(kvm, ID_AA64PFR1_EL1, THE, IMP))
-		res0 |= TCR2_EL2_PTTWI | TCR2_EL2_PnCH;
-	if (!kvm_has_feat(kvm, ID_AA64MMFR3_EL1, AIE, IMP))
-		res0 |= TCR2_EL2_AIE;
-	if (!kvm_has_s1poe(kvm))
-		res0 |= TCR2_EL2_POE | TCR2_EL2_E0POE;
-	if (!kvm_has_s1pie(kvm))
-		res0 |= TCR2_EL2_PIE;
-	if (!kvm_has_feat(kvm, ID_AA64MMFR1_EL1, VH, IMP))
-		res0 |= (TCR2_EL2_E0POE | TCR2_EL2_D128 |
-			 TCR2_EL2_AMEC1 | TCR2_EL2_DisCH0 | TCR2_EL2_DisCH1);
+	get_reg_fixed_bits(kvm, TCR2_EL2, &res0, &res1);
 	set_sysreg_masks(kvm, TCR2_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;
+	get_reg_fixed_bits(kvm, SCTLR_EL1, &res0, &res1);
 	set_sysreg_masks(kvm, SCTLR_EL1, res0, res1);
 
 	/* SCTLR2_ELx */
@@ -1697,40 +1676,7 @@ int kvm_init_nv_sysregs(struct kvm_vcpu *vcpu)
 	set_sysreg_masks(kvm, SCTLR2_EL2, res0, res1);
 
 	/* MDCR_EL2 */
-	res0 = MDCR_EL2_RES0;
-	res1 = MDCR_EL2_RES1;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMUVer, IMP))
-		res0 |= (MDCR_EL2_HPMN | MDCR_EL2_TPMCR |
-			 MDCR_EL2_TPM | MDCR_EL2_HPME);
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMSVer, IMP))
-		res0 |= MDCR_EL2_E2PB | MDCR_EL2_TPMS;
-	if (!kvm_has_feat(kvm, ID_AA64DFR1_EL1, SPMU, IMP))
-		res0 |= MDCR_EL2_EnSPM;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMUVer, V3P1))
-		res0 |= MDCR_EL2_HPMD;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, TraceFilt, IMP))
-		res0 |= MDCR_EL2_TTRF;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMUVer, V3P5))
-		res0 |= MDCR_EL2_HCCD | MDCR_EL2_HLP;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, TraceBuffer, IMP))
-		res0 |= MDCR_EL2_E2TB;
-	if (!kvm_has_feat(kvm, ID_AA64MMFR0_EL1, FGT, IMP))
-		res0 |= MDCR_EL2_TDCC;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, MTPMU, IMP) ||
-	    kvm_has_feat(kvm, ID_AA64PFR0_EL1, EL3, IMP))
-		res0 |= MDCR_EL2_MTPME;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMUVer, V3P7))
-		res0 |= MDCR_EL2_HPMFZO;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMSS, IMP))
-		res0 |= MDCR_EL2_PMSSE;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMSVer, V1P2))
-		res0 |= MDCR_EL2_HPMFZS;
-	if (!kvm_has_feat(kvm, ID_AA64DFR1_EL1, EBEP, IMP))
-		res0 |= MDCR_EL2_PMEE;
-	if (!kvm_has_feat(kvm, ID_AA64DFR0_EL1, DebugVer, V8P9))
-		res0 |= MDCR_EL2_EBWE;
-	if (!kvm_has_feat(kvm, ID_AA64DFR2_EL1, STEP, IMP))
-		res0 |= MDCR_EL2_EnSTEPOP;
+	get_reg_fixed_bits(kvm, MDCR_EL2, &res0, &res1);
 	set_sysreg_masks(kvm, MDCR_EL2, res0, res1);
 
 	/* CNTHCTL_EL2 */