diff options
| author | Jinqian Yang <yangjinqian1@huawei.com> | 2025-09-11 19:46:20 +0800 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2025-09-19 13:55:57 +0100 |
| commit | 1a0b2bf6ff11d2e0438f3a7d1d299339edab96e8 (patch) | |
| tree | b9322f4fe8b1d912df8ca135b7dadd4c845eb165 | |
| parent | ac53365990a19e808fde2758074ee31be65d1015 (diff) | |
KVM: arm64: Make ID_AA64MMFR1_EL1.{HCX, TWED} writable from userspace
Allow userspace to downgrade {HCX, TWED} in ID_AA64MMFR1_EL1. Userspace can
only change the value from high to low.
Signed-off-by: Jinqian Yang <yangjinqian1@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index b29f72478a50..e6ec971eb9d1 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -3152,8 +3152,6 @@ static const struct sys_reg_desc sys_reg_descs[] = { ~(ID_AA64MMFR0_EL1_RES0 | 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 | ID_AA64MMFR1_EL1_VMIDBits)), |