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>
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@ -3152,8 +3152,6 @@ static const struct sys_reg_desc sys_reg_descs[] = {
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~(ID_AA64MMFR0_EL1_RES0 |
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ID_AA64MMFR0_EL1_ASIDBITS)),
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ID_WRITABLE(ID_AA64MMFR1_EL1, ~(ID_AA64MMFR1_EL1_RES0 |
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ID_AA64MMFR1_EL1_HCX |
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ID_AA64MMFR1_EL1_TWED |
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ID_AA64MMFR1_EL1_XNX |
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ID_AA64MMFR1_EL1_VH |
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ID_AA64MMFR1_EL1_VMIDBits)),
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