Rather than falling to an "unhandled access", inject add an explicit
"undefined access" for TRFCR_EL1 access from the guest.

Cc: Marc Zyngier <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Mathieu Poirier <[email protected]>
Signed-off-by: Suzuki K Poulose <[email protected]>
---
 arch/arm64/kvm/sys_regs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 4f2f1e3145de..52fdb9a015a4 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1472,6 +1472,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
        { SYS_DESC(SYS_GCR_EL1), undef_access },
 
        { SYS_DESC(SYS_ZCR_EL1), NULL, reset_val, ZCR_EL1, 0, .visibility = 
sve_visibility },
+       { SYS_DESC(SYS_TRFCR_EL1), undef_access },
        { SYS_DESC(SYS_TTBR0_EL1), access_vm_reg, reset_unknown, TTBR0_EL1 },
        { SYS_DESC(SYS_TTBR1_EL1), access_vm_reg, reset_unknown, TTBR1_EL1 },
        { SYS_DESC(SYS_TCR_EL1), access_vm_reg, reset_val, TCR_EL1, 0 },
-- 
2.24.1

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