[PATCH v7 17/38] KVM: arm64: KVM: arm64: Make ID_MMFR0_EL1 writable

[Reiji Watanabe]

This patch adds id_reg_desc for ID_MMFR0_EL1 to make it writable
by userspace.

Signed-off-by: Reiji Watanabe <reijiw at google.com>
---
 arch/arm64/kvm/sys_regs.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 3892278deb09..dfcf95eee139 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -4149,6 +4149,14 @@ static struct id_reg_desc id_dfr1_el1_desc = {
 	},
 };
 
+static struct id_reg_desc id_mmfr0_el1_desc = {
+	.reg_desc = ID_SANITISED(ID_MMFR0_EL1),
+	.ftr_bits = {
+		S_FTR_BITS(FTR_LOWER_SAFE, ID_MMFR0_OUTERSHR_SHIFT, 0xf),
+		S_FTR_BITS(FTR_LOWER_SAFE, ID_MMFR0_INNERSHR_SHIFT, 0xf),
+	},
+};
+
 #define ID_DESC(id_reg_name, id_reg_desc)	\
 	[IDREG_IDX(SYS_##id_reg_name)] = (id_reg_desc)
 
@@ -4156,6 +4164,7 @@ static struct id_reg_desc id_dfr1_el1_desc = {
 static struct id_reg_desc *id_reg_desc_table[KVM_ARM_ID_REG_MAX_NUM] = {
 	/* CRm=1 */
 	ID_DESC(ID_DFR0_EL1, &id_dfr0_el1_desc),
+	ID_DESC(ID_MMFR0_EL1, &id_mmfr0_el1_desc),
 
 	/* CRm=3 */
 	ID_DESC(ID_DFR1_EL1, &id_dfr1_el1_desc),
-- 
2.36.0.rc0.470.gd361397f0d-goog