[PATCH v3 05/26] target/arm/kvm: Split kvm_arch_get/put_registers

[Jean-Philippe Brucker]

The confidential guest support in KVM limits the number of registers
that we can read and write. Split the get/put_registers function to
prepare for it.

Signed-off-by: Jean-Philippe Brucker <jean-phili...@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 440c3ac8c6..0c80992f7c 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -2062,7 +2062,7 @@ static int kvm_arch_put_sve(CPUState *cs)
     return 0;
 }
 
-int kvm_arch_put_registers(CPUState *cs, int level, Error **errp)
+static int kvm_arm_put_core_regs(CPUState *cs, int level, Error **errp)
 {
     uint64_t val;
     uint32_t fpr;
@@ -2165,6 +2165,19 @@ int kvm_arch_put_registers(CPUState *cs, int level, 
Error **errp)
         return ret;
     }
 
+    return 0;
+}
+
+int kvm_arch_put_registers(CPUState *cs, int level, Error **errp)
+{
+    int ret;
+    ARMCPU *cpu = ARM_CPU(cs);
+
+    ret = kvm_arm_put_core_regs(cs, level, errp);
+    if (ret) {
+        return ret;
+    }
+
     write_cpustate_to_list(cpu, true);
 
     if (!write_list_to_kvmstate(cpu, level)) {
@@ -2246,7 +2259,7 @@ static int kvm_arch_get_sve(CPUState *cs)
     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;
@@ -2349,6 +2362,19 @@ 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;
-- 
2.47.0