[PATCH v4 2/8] KVM: arm64: Add predicate for FPMR support in a VM

[Marc Zyngier]

As we are about to check for the advertisement of FPMR support to
a guest in a number of places, add a predicate that will gate most
of the support code for FPMR.

Signed-off-by: Marc Zyngier <maz at kernel.org>
---
 arch/arm64/include/asm/kvm_host.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index e244e3176b56..e5cf8af54dd6 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1475,4 +1475,8 @@ void kvm_set_vm_id_reg(struct kvm *kvm, u32 reg, u64 val);
 		(pa + pi + pa3) == 1;					\
 	})
 
+#define kvm_has_fpmr(k)					\
+	(system_supports_fpmr() &&			\
+	 kvm_has_feat((k), ID_AA64PFR2_EL1, FPMR, IMP))
+
 #endif /* __ARM64_KVM_HOST_H__ */
-- 
2.39.2