Hi Marc,

On Wed, Jun 18, 2025 at 05:43:07PM +0100, Marc Zyngier wrote:

In general, please use a patch title format that matches the one used
for the subsystem. For KVM, that'd be "KVM: arm64: Expose ..."/

[...]

quoted

 	case SYS_ID_AA64PFR2_EL1:
-		/* We only expose FPMR */
-		val &= ID_AA64PFR2_EL1_FPMR;
+		mask = ID_AA64PFR2_EL1_FPMR;
+
+		if (kvm_has_mte(vcpu->kvm))
+			mask |= ID_AA64PFR2_EL1_MTEFAR;
+
+		val &= mask;

I don't think there is a need for an extra variable, and you could
follow the pattern established in this file by writing this as:

	val &= (ID_AA64PFR2_EL1_FPMR |
		(kvm_has_mte(vcpu->kvm) ? ID_AA64PFR2_EL1_MTEFAR : 0));

Not a big deal though.

I can make the changes locally. Are you ok with the patch otherwise?

-- 
Catalin