[PATCH v3 20/27] KVM: arm64: nv: Add trap forwarding for HFGxTR_EL2

[Marc Zyngier]

Implement the trap forwarding for traps described by HFGxTR_EL2,
reusing the Fine Grained Traps infrastructure previously implemented.

Reviewed-by: Eric Auger <eric.auger at redhat.com>
Signed-off-by: Marc Zyngier <maz at kernel.org>
---
 arch/arm64/kvm/emulate-nested.c | 71 +++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)

diff --git a/arch/arm64/kvm/emulate-nested.c b/arch/arm64/kvm/emulate-nested.c
index af75c2775638..4c0a264ec2b2 100644
--- a/arch/arm64/kvm/emulate-nested.c
+++ b/arch/arm64/kvm/emulate-nested.c
@@ -930,6 +930,7 @@ static DEFINE_XARRAY(sr_forward_xa);
 
 enum fgt_group_id {
 	__NO_FGT_GROUP__,
+	HFGxTR_GROUP,
 
 	/* Must be last */
 	__NR_FGT_GROUP_IDS__
@@ -947,6 +948,69 @@ enum fgt_group_id {
 	}
 
 static const struct encoding_to_trap_config encoding_to_fgt[] __initconst = {
+	/* HFGRTR_EL2, HFGWTR_EL2 */
+	SR_FGT(SYS_TPIDR2_EL0,		HFGxTR, nTPIDR2_EL0, 0),
+	SR_FGT(SYS_SMPRI_EL1,		HFGxTR, nSMPRI_EL1, 0),
+	SR_FGT(SYS_ACCDATA_EL1,		HFGxTR, nACCDATA_EL1, 0),
+	SR_FGT(SYS_ERXADDR_EL1,		HFGxTR, ERXADDR_EL1, 1),
+	SR_FGT(SYS_ERXPFGCDN_EL1,	HFGxTR, ERXPFGCDN_EL1, 1),
+	SR_FGT(SYS_ERXPFGCTL_EL1,	HFGxTR, ERXPFGCTL_EL1, 1),
+	SR_FGT(SYS_ERXPFGF_EL1,		HFGxTR, ERXPFGF_EL1, 1),
+	SR_FGT(SYS_ERXMISC0_EL1,	HFGxTR, ERXMISCn_EL1, 1),
+	SR_FGT(SYS_ERXMISC1_EL1,	HFGxTR, ERXMISCn_EL1, 1),
+	SR_FGT(SYS_ERXMISC2_EL1,	HFGxTR, ERXMISCn_EL1, 1),
+	SR_FGT(SYS_ERXMISC3_EL1,	HFGxTR, ERXMISCn_EL1, 1),
+	SR_FGT(SYS_ERXSTATUS_EL1,	HFGxTR, ERXSTATUS_EL1, 1),
+	SR_FGT(SYS_ERXCTLR_EL1,		HFGxTR, ERXCTLR_EL1, 1),
+	SR_FGT(SYS_ERXFR_EL1,		HFGxTR, ERXFR_EL1, 1),
+	SR_FGT(SYS_ERRSELR_EL1,		HFGxTR, ERRSELR_EL1, 1),
+	SR_FGT(SYS_ERRIDR_EL1,		HFGxTR, ERRIDR_EL1, 1),
+	SR_FGT(SYS_ICC_IGRPEN0_EL1,	HFGxTR, ICC_IGRPENn_EL1, 1),
+	SR_FGT(SYS_ICC_IGRPEN1_EL1,	HFGxTR, ICC_IGRPENn_EL1, 1),
+	SR_FGT(SYS_VBAR_EL1,		HFGxTR, VBAR_EL1, 1),
+	SR_FGT(SYS_TTBR1_EL1,		HFGxTR, TTBR1_EL1, 1),
+	SR_FGT(SYS_TTBR0_EL1,		HFGxTR, TTBR0_EL1, 1),
+	SR_FGT(SYS_TPIDR_EL0,		HFGxTR, TPIDR_EL0, 1),
+	SR_FGT(SYS_TPIDRRO_EL0,		HFGxTR, TPIDRRO_EL0, 1),
+	SR_FGT(SYS_TPIDR_EL1,		HFGxTR, TPIDR_EL1, 1),
+	SR_FGT(SYS_TCR_EL1,		HFGxTR, TCR_EL1, 1),
+	SR_FGT(SYS_SCXTNUM_EL0,		HFGxTR, SCXTNUM_EL0, 1),
+	SR_FGT(SYS_SCXTNUM_EL1, 	HFGxTR, SCXTNUM_EL1, 1),
+	SR_FGT(SYS_SCTLR_EL1, 		HFGxTR, SCTLR_EL1, 1),
+	SR_FGT(SYS_REVIDR_EL1, 		HFGxTR, REVIDR_EL1, 1),
+	SR_FGT(SYS_PAR_EL1, 		HFGxTR, PAR_EL1, 1),
+	SR_FGT(SYS_MPIDR_EL1, 		HFGxTR, MPIDR_EL1, 1),
+	SR_FGT(SYS_MIDR_EL1, 		HFGxTR, MIDR_EL1, 1),
+	SR_FGT(SYS_MAIR_EL1, 		HFGxTR, MAIR_EL1, 1),
+	SR_FGT(SYS_LORSA_EL1, 		HFGxTR, LORSA_EL1, 1),
+	SR_FGT(SYS_LORN_EL1, 		HFGxTR, LORN_EL1, 1),
+	SR_FGT(SYS_LORID_EL1, 		HFGxTR, LORID_EL1, 1),
+	SR_FGT(SYS_LOREA_EL1, 		HFGxTR, LOREA_EL1, 1),
+	SR_FGT(SYS_LORC_EL1, 		HFGxTR, LORC_EL1, 1),
+	SR_FGT(SYS_ISR_EL1, 		HFGxTR, ISR_EL1, 1),
+	SR_FGT(SYS_FAR_EL1, 		HFGxTR, FAR_EL1, 1),
+	SR_FGT(SYS_ESR_EL1, 		HFGxTR, ESR_EL1, 1),
+	SR_FGT(SYS_DCZID_EL0, 		HFGxTR, DCZID_EL0, 1),
+	SR_FGT(SYS_CTR_EL0, 		HFGxTR, CTR_EL0, 1),
+	SR_FGT(SYS_CSSELR_EL1, 		HFGxTR, CSSELR_EL1, 1),
+	SR_FGT(SYS_CPACR_EL1, 		HFGxTR, CPACR_EL1, 1),
+	SR_FGT(SYS_CONTEXTIDR_EL1, 	HFGxTR, CONTEXTIDR_EL1, 1),
+	SR_FGT(SYS_CLIDR_EL1, 		HFGxTR, CLIDR_EL1, 1),
+	SR_FGT(SYS_CCSIDR_EL1, 		HFGxTR, CCSIDR_EL1, 1),
+	SR_FGT(SYS_APIBKEYLO_EL1, 	HFGxTR, APIBKey, 1),
+	SR_FGT(SYS_APIBKEYHI_EL1, 	HFGxTR, APIBKey, 1),
+	SR_FGT(SYS_APIAKEYLO_EL1, 	HFGxTR, APIAKey, 1),
+	SR_FGT(SYS_APIAKEYHI_EL1, 	HFGxTR, APIAKey, 1),
+	SR_FGT(SYS_APGAKEYLO_EL1, 	HFGxTR, APGAKey, 1),
+	SR_FGT(SYS_APGAKEYHI_EL1, 	HFGxTR, APGAKey, 1),
+	SR_FGT(SYS_APDBKEYLO_EL1, 	HFGxTR, APDBKey, 1),
+	SR_FGT(SYS_APDBKEYHI_EL1, 	HFGxTR, APDBKey, 1),
+	SR_FGT(SYS_APDAKEYLO_EL1, 	HFGxTR, APDAKey, 1),
+	SR_FGT(SYS_APDAKEYHI_EL1, 	HFGxTR, APDAKey, 1),
+	SR_FGT(SYS_AMAIR_EL1, 		HFGxTR, AMAIR_EL1, 1),
+	SR_FGT(SYS_AIDR_EL1, 		HFGxTR, AIDR_EL1, 1),
+	SR_FGT(SYS_AFSR1_EL1, 		HFGxTR, AFSR1_EL1, 1),
+	SR_FGT(SYS_AFSR0_EL1, 		HFGxTR, AFSR0_EL1, 1),
 };
 
 static union trap_config get_trap_config(u32 sysreg)
@@ -1127,6 +1191,13 @@ bool __check_nv_sr_forward(struct kvm_vcpu *vcpu)
 	case __NO_FGT_GROUP__:
 		break;
 
+	case HFGxTR_GROUP:
+		if (is_read)
+			val = sanitised_sys_reg(vcpu, HFGRTR_EL2);
+		else
+			val = sanitised_sys_reg(vcpu, HFGWTR_EL2);
+		break;
+
 	case __NR_FGT_GROUP_IDS__:
 		/* Something is really wrong, bail out */
 		WARN_ONCE(1, "__NR_FGT_GROUP_IDS__");
-- 
2.34.1