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[v5,14/27] KVM: arm64: Make ID registers without id_reg_info writable

Message ID 20220214065746.1230608-15-reijiw@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: Make CPU ID registers writable by userspace | expand

Commit Message

Reiji Watanabe Feb. 14, 2022, 6:57 a.m. UTC 
Make ID registers that don't have id_reg_info writable.

Signed-off-by: Reiji Watanabe <reijiw@google.com>
---
 arch/arm64/kvm/sys_regs.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
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Patch

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index fea7b49018b2..9d7041a10b41 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1909,11 +1909,8 @@  static int __set_id_reg(struct kvm_vcpu *vcpu,
 		/* The value is same as the current value. Nothing to do. */
 		return 0;
 
-	/*
-	 * Don't allow to modify the register's value if the register is raz,
-	 * or the reg doesn't have the id_reg_info.
-	 */
-	if (raz || !GET_ID_REG_INFO(encoding))
+	/* Don't allow to modify the register's value if the register is raz. */
+	if (raz)
 		return -EINVAL;
 
 	/*