[RFC v3 05/24] target/arm/kvm: Split kvm_arch_get/put_registers

[Mathieu Poirier <mathieu.poirier@linaro.org>]

From: Jean-Philippe Brucker <jean-philippe@linaro.org>

For a Realm, KVM is much more restrictive on the registers a VMM can
initialize.  To prepare for Realm VM initialization, split the get/put
register functions for a non-secure VM in their own function.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 target/arm/kvm.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 0c853d17413e..33ac9528c45f 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -2166,7 +2166,7 @@ static int kvm_arch_put_sve(CPUState *cs, uint32_t vq, bool have_ffr)
     return 0;
 }
 
-int kvm_arch_put_registers(CPUState *cs, KvmPutState level, Error **errp)
+static int kvm_arm_put_core_regs(CPUState *cs, Error **errp)
 {
     uint64_t val;
     uint32_t fpr;
@@ -2269,6 +2269,19 @@ int kvm_arch_put_registers(CPUState *cs, KvmPutState level, Error **errp)
         return ret;
     }
 
+    return 0;
+}
+
+int kvm_arch_put_registers(CPUState *cs, KvmPutState level, Error **errp)
+{
+    int ret;
+    ARMCPU *cpu = ARM_CPU(cs);
+
+    ret = kvm_arm_put_core_regs(cs, errp);
+    if (ret) {
+        return ret;
+    }
+
     write_cpustate_to_list(cpu, true);
 
     if (!write_list_to_kvmstate(cpu, level)) {
@@ -2351,7 +2364,7 @@ static int kvm_arch_get_sve(CPUState *cs, uint32_t vq, bool have_ffr)
     return 0;
 }
 
-int kvm_arch_get_registers(CPUState *cs, Error **errp)
+static int kvm_arm_get_core_regs(CPUState *cs, Error **errp)
 {
     uint64_t val;
     unsigned int el;
@@ -2454,6 +2467,19 @@ int kvm_arch_get_registers(CPUState *cs, Error **errp)
     }
     vfp_set_fpcr(env, fpr);
 
+    return 0;
+}
+
+int kvm_arch_get_registers(CPUState *cs, Error **errp)
+{
+    int ret;
+    ARMCPU *cpu = ARM_CPU(cs);
+
+    ret = kvm_arm_get_core_regs(cs, errp);
+    if (ret) {
+        return ret;
+    }
+
     ret = kvm_get_vcpu_events(cpu);
     if (ret) {
         return ret;
-- 
2.43.0