[Qemu-devel] [PATCH 09/13] target/arm/kvm: Export kvm_arm_get_sve_vls

[Andrew Jones <drjones@redhat.com>]

Signed-off-by: Andrew Jones <drjones@redhat.com>
---
 target/arm/kvm64.c   |  7 +++++--
 target/arm/kvm_arm.h | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c
index 0c666e405357..11c6334a7c08 100644
--- a/target/arm/kvm64.c
+++ b/target/arm/kvm64.c
@@ -446,7 +446,8 @@ void kvm_arm_pmu_set_irq(CPUState *cs, int irq)
     }
 }
 
-static int kvm_arm_get_sve_vls(CPUState *cs, uint64_t sve_vls[])
+int kvm_arm_get_sve_vls(CPUState *cs,
+                        uint64_t sve_vls[KVM_ARM64_SVE_VLS_WORDS])
 {
     struct kvm_one_reg reg = {
         .id = KVM_REG_ARM64_SVE_VLS,
@@ -470,7 +471,9 @@ static int kvm_arm_get_sve_vls(CPUState *cs, uint64_t sve_vls[])
     return ret;
 }
 
-static int kvm_arm_set_sve_vls(CPUState *cs, uint64_t sve_vls[], int max_vq)
+static int kvm_arm_set_sve_vls(CPUState *cs,
+                               uint64_t sve_vls[KVM_ARM64_SVE_VLS_WORDS],
+                               int max_vq)
 {
     struct kvm_one_reg reg = {
         .id = KVM_REG_ARM64_SVE_VLS,
diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h
index c488ec3ab410..748ed8d54985 100644
--- a/target/arm/kvm_arm.h
+++ b/target/arm/kvm_arm.h
@@ -248,6 +248,26 @@ int kvm_arm_vgic_probe(void);
 void kvm_arm_pmu_set_irq(CPUState *cs, int irq);
 void kvm_arm_pmu_init(CPUState *cs);
 
+/**
+ * kvm_arm_get_sve_vls
+ * @cs: CPUState
+ * @sve_vls: valid vector length bitmap
+ *
+ * Get the valid vector length bitmap. If a bit 'bit' is set
+ * then the host supports a vector length of (bit * 16) bytes.
+ *
+ * For example, if
+ *
+ *   sve_vls[0] = 0xb and
+ *   sve_vls[1 ... KVM_ARM64_SVE_VLS_WORDS-1] = 0,
+ *
+ * then the host supports 16, 32, and 64 byte vector lengths.
+ *
+ * Returns: the highest set bit if successful else < 0 error code
+ */
+int kvm_arm_get_sve_vls(CPUState *cs,
+                        uint64_t sve_vls[KVM_ARM64_SVE_VLS_WORDS]);
+
 #else
 
 static inline void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
-- 
2.20.1