Add some helpers to ease the declaration for idreg desc.
These Macros will be heavily used for future commits enabling writable
for idregs.
Signed-off-by: Jing Zhang <jingzhangos@xxxxxxxxxx>
---
arch/arm64/kvm/sys_regs.c | 79 ++++++++++++++++-----------------------
1 file changed, 33 insertions(+), 46 deletions(-)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 0a406058abb9..9ca23cfec9e5 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1844,27 +1844,37 @@ static unsigned int elx2_visibility(const struct kvm_vcpu *vcpu,
* from userspace.
*/
-/* sys_reg_desc initialiser for known cpufeature ID registers */
-#define ID_SANITISED(name) { \
- SYS_DESC(SYS_##name), \
- .access = access_id_reg, \
- .get_user = get_id_reg, \
- .set_user = set_id_reg, \
- .visibility = id_visibility, \
- .reset = kvm_read_sanitised_id_reg, \
- .val = 0, \
+#define ID_DESC(name, _set_user, _visibility, _reset, mask) { \
+ SYS_DESC(SYS_##name), \
+ .access = access_id_reg, \
+ .get_user = get_id_reg, \
+ .set_user = _set_user, \
+ .visibility = _visibility, \
+ .reset = _reset, \
+ .val = mask, \
}
/* sys_reg_desc initialiser for known cpufeature ID registers */
-#define AA32_ID_SANITISED(name) { \
- SYS_DESC(SYS_##name), \
- .access = access_id_reg, \
- .get_user = get_id_reg, \
- .set_user = set_id_reg, \
- .visibility = aa32_id_visibility, \
- .reset = kvm_read_sanitised_id_reg, \
- .val = 0, \
-}
+#define _ID_SANITISED(name, _set_user, _reset) \
+ ID_DESC(name, _set_user, id_visibility, _reset, 0)
+#define ID_SANITISED(name) \
+ _ID_SANITISED(name, set_id_reg, kvm_read_sanitised_id_reg)
+
+#define _ID_SANITISED_W(name, _set_user, _reset) \
+ ID_DESC(name, _set_user, id_visibility, _reset, GENMASK(63, 0))
+#define ID_SANITISED_W(name) \
+ _ID_SANITISED_W(name, set_id_reg, kvm_read_sanitised_id_reg)
+
+/* sys_reg_desc initialiser for known cpufeature ID registers */
+#define _AA32_ID_SANITISED(name, _set_user, _reset) \
+ ID_DESC(name, _set_user, aa32_id_visibility, _reset, 0)
+#define AA32_ID_SANITISED(name) \
+ _AA32_ID_SANITISED(name, set_id_reg, kvm_read_sanitised_id_reg)
+
+#define _AA32_ID_SANITISED_W(name, _set_user, _reset) \
+ ID_DESC(name, _set_user, aa32_id_visibility, _reset, GENMASK(63, 0))
+#define AA32_ID_SANITISED_W(name) \
+ _AA32_ID_SANITISED_W(name, set_id_reg, kvm_read_sanitised_id_reg)
/*
* sys_reg_desc initialiser for architecturally unallocated cpufeature ID
@@ -1886,15 +1896,8 @@ static unsigned int elx2_visibility(const struct kvm_vcpu *vcpu,
* For now, these are exposed just like unallocated ID regs: they appear
* RAZ for the guest.
*/
-#define ID_HIDDEN(name) { \
- SYS_DESC(SYS_##name), \
- .access = access_id_reg, \
- .get_user = get_id_reg, \
- .set_user = set_id_reg, \
- .visibility = raz_visibility, \
- .reset = kvm_read_sanitised_id_reg, \
- .val = 0, \
-}
+#define ID_HIDDEN(name) \
+ ID_DESC(name, set_id_reg, raz_visibility, kvm_read_sanitised_id_reg, 0)
static bool access_sp_el1(struct kvm_vcpu *vcpu,
struct sys_reg_params *p,
@@ -2001,13 +2004,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
/* CRm=1 */
AA32_ID_SANITISED(ID_PFR0_EL1),
AA32_ID_SANITISED(ID_PFR1_EL1),
- { SYS_DESC(SYS_ID_DFR0_EL1),
- .access = access_id_reg,
- .get_user = get_id_reg,
- .set_user = set_id_dfr0_el1,
- .visibility = aa32_id_visibility,
- .reset = read_sanitised_id_dfr0_el1,
- .val = GENMASK(63, 0), },
+ _AA32_ID_SANITISED_W(ID_DFR0_EL1, set_id_dfr0_el1, read_sanitised_id_dfr0_el1),
ID_HIDDEN(ID_AFR0_EL1),
AA32_ID_SANITISED(ID_MMFR0_EL1),
AA32_ID_SANITISED(ID_MMFR1_EL1),
@@ -2036,12 +2033,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
/* AArch64 ID registers */
/* CRm=4 */
- { SYS_DESC(SYS_ID_AA64PFR0_EL1),
- .access = access_id_reg,
- .get_user = get_id_reg,
- .set_user = set_id_reg,
- .reset = read_sanitised_id_aa64pfr0_el1,
- .val = GENMASK(63, 0), },
+ _ID_SANITISED_W(ID_AA64PFR0_EL1, set_id_reg, read_sanitised_id_aa64pfr0_el1),
ID_SANITISED(ID_AA64PFR1_EL1),
ID_UNALLOCATED(4,2),
ID_UNALLOCATED(4,3),
@@ -2051,12 +2043,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
ID_UNALLOCATED(4,7),
/* CRm=5 */
- { SYS_DESC(SYS_ID_AA64DFR0_EL1),
- .access = access_id_reg,
- .get_user = get_id_reg,
- .set_user = set_id_aa64dfr0_el1,
- .reset = read_sanitised_id_aa64dfr0_el1,
- .val = GENMASK(63, 0), },
+ _ID_SANITISED_W(ID_AA64DFR0_EL1, set_id_aa64dfr0_el1, read_sanitised_id_aa64dfr0_el1),
ID_SANITISED(ID_AA64DFR1_EL1),
ID_UNALLOCATED(5,2),
ID_UNALLOCATED(5,3),
--
2.41.0.585.gd2178a4bd4-goog
