[PATCH 8/9] KVM: arm64: Allow control of dpISA extensions in ID_AA64ISAR3_EL1

[Mark Brown]

ID_AA64ISAR3_EL1 is currently marked as unallocated in KVM but does have a
number of bitfields defined in it. Expose FPRCVT and FAMINMAX, two simple
instruction only extensions to guests.

Signed-off-by: Mark Brown <broo...@kernel.org>
---
 arch/arm64/kvm/sys_regs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 
dad88e31f9537fe02e28b117d6a740f15572e0ba..ab348c314d7963437e1876d441169f3ef4eff095
 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2409,7 +2409,8 @@ static const struct sys_reg_desc sys_reg_descs[] = {
        ID_WRITABLE(ID_AA64ISAR2_EL1, ~(ID_AA64ISAR2_EL1_RES0 |
                                        ID_AA64ISAR2_EL1_APA3 |
                                        ID_AA64ISAR2_EL1_GPA3)),
-       ID_UNALLOCATED(6,3),
+       ID_WRITABLE(ID_AA64ISAR3_EL1, (ID_AA64ISAR3_EL1_FPRCVT |
+                                      ID_AA64ISAR3_EL1_FAMINMAX)),
        ID_UNALLOCATED(6,4),
        ID_UNALLOCATED(6,5),
        ID_UNALLOCATED(6,6),

-- 
2.39.2