This patch adds id_reg_desc for ID_DFR1_EL1 to make it writable
by userspace.
Signed-off-by: Reiji Watanabe <reijiw@xxxxxxxxxx>
---
arch/arm64/kvm/sys_regs.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 9eca085886f5..3892278deb09 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -4142,6 +4142,13 @@ static struct id_reg_desc id_dfr0_el1_desc = {
.vcpu_mask = vcpu_mask_id_dfr0_el1,
};
+static struct id_reg_desc id_dfr1_el1_desc = {
+ .reg_desc = ID_SANITISED(ID_DFR1_EL1),
+ .ftr_bits = {
+ S_FTR_BITS(FTR_LOWER_SAFE, ID_DFR1_MTPMU_SHIFT, 0xf),
+ },
+};
+
#define ID_DESC(id_reg_name, id_reg_desc) \
[IDREG_IDX(SYS_##id_reg_name)] = (id_reg_desc)
@@ -4150,6 +4157,9 @@ 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),
+ /* CRm=3 */
+ ID_DESC(ID_DFR1_EL1, &id_dfr1_el1_desc),
+
/* CRm=4 */
ID_DESC(ID_AA64PFR0_EL1, &id_aa64pfr0_el1_desc),
ID_DESC(ID_AA64PFR1_EL1, &id_aa64pfr1_el1_desc),
--
2.36.0.rc0.470.gd361397f0d-goog
