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authorPaolo Bonzini <pbonzini@redhat.com>2013-03-20 13:11:56 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2014-05-13 13:12:40 +0200
commit50a2c6e55fa2ce5a2916a2c206bad2c6b0e06df1 (patch)
tree0ad5c6445202d419c26a8e18e9aced87bd51665b
parent7848c8d19f8556666df25044bbd5d8b29439c368 (diff)
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>
-rw-r--r--include/sysemu/kvm.h2
-rw-r--r--kvm-all.c11
-rw-r--r--target-arm/cpu.c7
-rw-r--r--target-arm/kvm32.c4
-rw-r--r--target-arm/kvm64.c2
-rw-r--r--target-arm/kvm_arm.h8
-rw-r--r--target-i386/cpu.c5
-rw-r--r--target-i386/kvm.c3
-rw-r--r--target-i386/kvm_i386.h1
-rw-r--r--target-ppc/kvm.c4
-rw-r--r--target-s390x/cpu.c4
-rw-r--r--target-s390x/cpu.h5
-rw-r--r--target-s390x/kvm.c6
13 files changed, 37 insertions, 25 deletions
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index a6c2823352..e7ad9d159a 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -245,8 +245,6 @@ int kvm_arch_init_vcpu(CPUState *cpu);
/* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */
unsigned long kvm_arch_vcpu_id(CPUState *cpu);
-void kvm_arch_reset_vcpu(CPUState *cpu);
-
int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
int kvm_arch_on_sigbus(int code, void *addr);
diff --git a/kvm-all.c b/kvm-all.c
index 94520e5915..a343ede4d4 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -223,13 +223,6 @@ static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot)
return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
}
-static void kvm_reset_vcpu(void *opaque)
-{
- CPUState *cpu = opaque;
-
- kvm_arch_reset_vcpu(cpu);
-}
-
int kvm_init_vcpu(CPUState *cpu)
{
KVMState *s = kvm_state;
@@ -269,10 +262,6 @@ int kvm_init_vcpu(CPUState *cpu)
}
ret = kvm_arch_init_vcpu(cpu);
- if (ret == 0) {
- qemu_register_reset(kvm_reset_vcpu, cpu);
- kvm_arch_reset_vcpu(cpu);
- }
err:
return ret;
}
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index c0ddc3e3df..6c6f2b3d46 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -29,6 +29,7 @@
#include "hw/arm/arm.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
+#include "kvm_arm.h"
static void arm_cpu_set_pc(CPUState *cs, vaddr value)
{
@@ -165,6 +166,12 @@ static void arm_cpu_reset(CPUState *s)
* tb_flush().
*/
tb_flush(env);
+
+#ifndef CONFIG_USER_ONLY
+ if (kvm_enabled()) {
+ kvm_arm_reset_vcpu(cpu);
+ }
+#endif
}
#ifndef CONFIG_USER_ONLY
diff --git a/target-arm/kvm32.c b/target-arm/kvm32.c
index a690d9935f..b79750c57e 100644
--- a/target-arm/kvm32.c
+++ b/target-arm/kvm32.c
@@ -510,11 +510,9 @@ int kvm_arch_get_registers(CPUState *cs)
return 0;
}
-void kvm_arch_reset_vcpu(CPUState *cs)
+void kvm_arm_reset_vcpu(ARMCPU *cpu)
{
/* Feed the kernel back its initial register state */
- ARMCPU *cpu = ARM_CPU(cs);
-
memmove(cpu->cpreg_values, cpu->cpreg_reset_values,
cpu->cpreg_array_len * sizeof(cpu->cpreg_values[0]));
diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c
index e115879d9a..c729b9ec9f 100644
--- a/target-arm/kvm64.c
+++ b/target-arm/kvm64.c
@@ -260,6 +260,6 @@ int kvm_arch_get_registers(CPUState *cs)
return ret;
}
-void kvm_arch_reset_vcpu(CPUState *cs)
+void kvm_arm_reset_vcpu(ARMCPU *cpu)
{
}
diff --git a/target-arm/kvm_arm.h b/target-arm/kvm_arm.h
index 137c5671e9..dc4e2336fa 100644
--- a/target-arm/kvm_arm.h
+++ b/target-arm/kvm_arm.h
@@ -67,6 +67,14 @@ bool write_list_to_kvmstate(ARMCPU *cpu);
*/
bool write_kvmstate_to_list(ARMCPU *cpu);
+/**
+ * kvm_arm_reset_vcpu:
+ * @cpu: ARMCPU
+ *
+ * Called at reset time to kernel registers to their initial values.
+ */
+void kvm_arm_reset_vcpu(ARMCPU *cpu);
+
#ifdef CONFIG_KVM
/**
* kvm_arm_create_scratch_host_vcpu:
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 8f193a9330..c04aed929f 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 d17eea3186..2882e14dad 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 4392ab4359..b0b2193b1f 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);
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 4b81e5f253..8ff1777dcb 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -430,10 +430,6 @@ int kvm_arch_init_vcpu(CPUState *cs)
return ret;
}
-void kvm_arch_reset_vcpu(CPUState *cpu)
-{
-}
-
static void kvm_sw_tlb_put(PowerPCCPU *cpu)
{
CPUPPCState *env = &cpu->env;
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index dfd83e8aef..c3082b73c5 100644
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -152,6 +152,10 @@ static void s390_cpu_full_reset(CPUState *s)
* after incrementing the cpu counter */
#if !defined(CONFIG_USER_ONLY)
s->halted = 1;
+
+ if (kvm_enabled()) {
+ kvm_s390_reset_vcpu(cpu);
+ }
#endif
tlb_flush(s, 1);
}
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index aad277af49..06454d6da5 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -359,11 +359,16 @@ void s390x_cpu_timer(void *opaque);
int s390_virtio_hypercall(CPUS390XState *env);
#ifdef CONFIG_KVM
+void kvm_s390_reset_vcpu(S390CPU *cpu);
void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code);
void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token);
void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm,
uint64_t parm64, int vm);
#else
+static inline void kvm_s390_reset_vcpu(S390CPU *cpu)
+{
+}
+
static inline void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code)
{
}
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index ba2dffe3dd..56179afece 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -117,14 +117,16 @@ int kvm_arch_init_vcpu(CPUState *cpu)
return 0;
}
-void kvm_arch_reset_vcpu(CPUState *cpu)
+void kvm_s390_reset_vcpu(S390CPU *cpu)
{
+ CPUState *cs = CPU(cpu);
+
/* The initial reset call is needed here to reset in-kernel
* vcpu data that we can't access directly from QEMU
* (i.e. with older kernels which don't support sync_regs/ONE_REG).
* Before this ioctl cpu_synchronize_state() is called in common kvm
* code (kvm-all) */
- if (kvm_vcpu_ioctl(cpu, KVM_S390_INITIAL_RESET, NULL)) {
+ if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
perror("Can't reset vcpu\n");
}
}