KVM: arm64: nv: Honor MDCR_EL2.{TPM, TPMCR} in Host EL0

TPM and TPMCR trap bits also affect Host EL0. How fun.

Mark these two trap bits as such and take advantage of the new
infrastructure for dealing w/ EL0 traps.

Reviewed-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Oliver Upton <[email protected]>

Author: oupton

arch/arm64/kvm/emulate-nested.c

@@ -304,13 +304,15 @@ static const struct trap_bits coarse_trap_bits[] = {
 		.index		= MDCR_EL2,
 		.value		= MDCR_EL2_TPMCR,
 		.mask		= MDCR_EL2_TPMCR,
-		.behaviour	= BEHAVE_FORWARD_RW,
+		.behaviour	= BEHAVE_FORWARD_RW |
+				  BEHAVE_FORWARD_IN_HOST_EL0,
 	},
 	[CGT_MDCR_TPM] = {
 		.index		= MDCR_EL2,
 		.value		= MDCR_EL2_TPM,
 		.mask		= MDCR_EL2_TPM,
-		.behaviour	= BEHAVE_FORWARD_RW,
+		.behaviour	= BEHAVE_FORWARD_RW |
+				  BEHAVE_FORWARD_IN_HOST_EL0,
 	},
 	[CGT_MDCR_TDE] = {
 		.index		= MDCR_EL2,