[PATCH 10/16] KVM: arm64: Advertise FPMR to protected VMs

[Fuad Tabba]

Advertise FEAT_FPMR to protected VMs, and reset FPMR to 0 as KVM does
for a non-protected vCPU. With the field set, vcpu_set_hcrx() sets
HCRX_EL2.EnFPM for them, and FPMR is switched with the rest of the FP
state.

Signed-off-by: Fuad Tabba <fuad.tabba@xxxxxxxxx>
---
 arch/arm64/kvm/hyp/nvhe/sys_regs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
index bcc35d6990e67..a937aad009348 100644
--- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c
+++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
@@ -128,6 +128,7 @@ static const struct pvm_ftr_bits pvmid_aa64pfr1[] = {
 
 static const struct pvm_ftr_bits pvmid_aa64pfr2[] = {
 	MAX_FEAT(ID_AA64PFR2_EL1, GCIE, NI),
+	MAX_FEAT(ID_AA64PFR2_EL1, FPMR, IMP),
 	FEAT_END
 };
 
@@ -829,6 +830,7 @@ static const struct sys_reg_desc_reset pvm_sys_reg_reset_vals[] = {
 	RESET_UNKNOWN(TTBR1_EL1),
 	RESET_UNKNOWN(FAR_EL1),
 	RESET_VAL(VBAR_EL1, 0x1de7ec7edbadc000ULL),
+	RESET_ZERO(FPMR),
 };
 
 void kvm_reset_pvm_sys_regs(struct kvm_vcpu *vcpu)
-- 
2.47.3