This patch adds id_reg_desc for ID_MMFR0_EL1 to make it writable
by userspace.
Signed-off-by: Reiji Watanabe <reijiw@xxxxxxxxxx>
---
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
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