[PATCH] KVM: arm64: Make HCX writable from userspace

Jinqian Yang yangjinqian1 at huawei.com
Tue Mar 25 05:11:26 PDT 2025


Allow userspace to modify guest visible value for HCX in
ID_AA64MMFR1_EL1.

Signed-off-by: Jinqian Yang <yangjinqian1 at huawei.com>
---
 arch/arm64/kvm/sys_regs.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 82430c1e1dd0..b105f156bdf6 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2666,7 +2666,6 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 					ID_AA64MMFR0_EL1_TGRAN16_2 |
 					ID_AA64MMFR0_EL1_ASIDBITS)),
 	ID_WRITABLE(ID_AA64MMFR1_EL1, ~(ID_AA64MMFR1_EL1_RES0 |
-					ID_AA64MMFR1_EL1_HCX |
 					ID_AA64MMFR1_EL1_TWED |
 					ID_AA64MMFR1_EL1_XNX |
 					ID_AA64MMFR1_EL1_VH |
-- 
2.33.0




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