kvm: reset state from the CPU's reset method

Now that we have a CPU object with a reset method, it is better to
keep the KVM reset close to the CPU reset.  Using qemu_register_reset
as we do now keeps them far apart.

With this patch, PPC no longer calls the kvm_arch_ function, so
it can get removed there.  Other arches call it from their CPU
reset handler, and the function gets an ARMCPU/X86CPU/S390CPU.

Note that ARM- and s390-specific functions are called kvm_arm_*
and kvm_s390_*, while x86-specific functions are called kvm_arch_*.
That follows the convention used by the different architectures.
Changing that is the topic of a separate patch.

Reviewed-by: Gleb Natapov <gnatapov@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

3 files changed, 7 insertions, 2 deletions

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 8f193a9..c04aed9 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -24,6 +24,7 @@
 #include "cpu.h"
 #include "sysemu/kvm.h"
 #include "sysemu/cpus.h"
+#include "kvm_i386.h"
 #include "topology.h"
 
 #include "qemu/option.h"
@@ -2494,6 +2495,10 @@ static void x86_cpu_reset(CPUState *s)
     }
 
     s->halted = !cpu_is_bsp(cpu);
+
+    if (kvm_enabled()) {
+        kvm_arch_reset_vcpu(cpu);
+    }
 #endif
 }
 
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index d17eea3..2882e14 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -723,9 +723,8 @@ int kvm_arch_init_vcpu(CPUState *cs)
     return 0;
 }
 
-void kvm_arch_reset_vcpu(CPUState *cs)
+void kvm_arch_reset_vcpu(X86CPU *cpu)
 {
-    X86CPU *cpu = X86_CPU(cs);
     CPUX86State *env = &cpu->env;
 
     env->exception_injected = -1;
diff --git a/target-i386/kvm_i386.h b/target-i386/kvm_i386.h
index 4392ab4..b0b2193 100644
--- a/target-i386/kvm_i386.h
+++ b/target-i386/kvm_i386.h
@@ -14,6 +14,7 @@
 #include "sysemu/kvm.h"
 
 bool kvm_allows_irq0_override(void);
+void kvm_arch_reset_vcpu(X86CPU *cs);
 
 int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr,
                           uint32_t flags, uint32_t *dev_id);