ID_REG_LIMIT_FIELD_ENUM() is a useful macro to limit the idreg
features exposed to guest and userspace, and the NV code can
make use of it.
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/kvm/sys_regs.c | 10 ----------
arch/arm64/kvm/sys_regs.h | 10 ++++++++++
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index b1bd1a47e7caa..885cdef77d01e 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1803,16 +1803,6 @@ static u64 sanitise_id_aa64pfr0_el1(const struct kvm_vcpu *vcpu, u64 val)
return val;
}
-#define ID_REG_LIMIT_FIELD_ENUM(val, reg, field, limit) \
-({ \
- u64 __f_val = FIELD_GET(reg##_##field##_MASK, val); \
- (val) &= ~reg##_##field##_MASK; \
- (val) |= FIELD_PREP(reg##_##field##_MASK, \
- min(__f_val, \
- (u64)SYS_FIELD_VALUE(reg, field, limit))); \
- (val); \
-})
-
static u64 sanitise_id_aa64dfr0_el1(const struct kvm_vcpu *vcpu, u64 val)
{
val = ID_REG_LIMIT_FIELD_ENUM(val, ID_AA64DFR0_EL1, DebugVer, V8P8);
diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h
index 1d94ed6efad2c..cc6338d387663 100644
--- a/arch/arm64/kvm/sys_regs.h
+++ b/arch/arm64/kvm/sys_regs.h
@@ -247,4 +247,14 @@ int kvm_finalize_sys_regs(struct kvm_vcpu *vcpu);
CRn(sys_reg_CRn(reg)), CRm(sys_reg_CRm(reg)), \
Op2(sys_reg_Op2(reg))
+#define ID_REG_LIMIT_FIELD_ENUM(val, reg, field, limit) \
+({ \
+ u64 __f_val = FIELD_GET(reg##_##field##_MASK, val); \
+ (val) &= ~reg##_##field##_MASK; \
+ (val) |= FIELD_PREP(reg##_##field##_MASK, \
+ min(__f_val, \
+ (u64)SYS_FIELD_VALUE(reg, field, limit))); \
+ (val); \
+})
+
#endif /* __ARM64_KVM_SYS_REGS_LOCAL_H__ */
--
2.39.2
