On 6/17/2019 10:56 AM, Liran Alon wrote:
Simiar to how kvm_init_vcpu() calls kvm_arch_init_vcpu() to perform
arch-dependent initialisation, introduce kvm_arch_destroy_vcpu()
to be called from kvm_destroy_vcpu() to perform arch-dependent
destruction.
This was added because some architectures (Such as i386)
currently do not free memory that it have allocated in
kvm_arch_init_vcpu().
Suggested-by: Maran Wilson <maran.wilson@xxxxxxxxxx>
Signed-off-by: Liran Alon <liran.alon@xxxxxxxxxx>
---
accel/kvm/kvm-all.c | 5 +++++
include/sysemu/kvm.h | 1 +
target/arm/kvm32.c | 5 +++++
target/arm/kvm64.c | 5 +++++
target/i386/kvm.c | 12 ++++++++++++
target/mips/kvm.c | 5 +++++
target/ppc/kvm.c | 5 +++++
target/s390x/kvm.c | 10 ++++++++++
8 files changed, 48 insertions(+)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 524c4ddfbd0f..59a3aa3a40da 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -292,6 +292,11 @@ int kvm_destroy_vcpu(CPUState *cpu)
DPRINTF("kvm_destroy_vcpu\n");
+ ret = kvm_arch_destroy_vcpu(cpu);
+ if (ret < 0) {
+ goto err;
+ }
+
mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
if (mmap_size < 0) {
ret = mmap_size;
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index a6d1cd190fed..64f55e519df7 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -371,6 +371,7 @@ int kvm_arch_put_registers(CPUState *cpu, int level);
int kvm_arch_init(MachineState *ms, KVMState *s);
int kvm_arch_init_vcpu(CPUState *cpu);
+int kvm_arch_destroy_vcpu(CPUState *cpu);
bool kvm_vcpu_id_is_valid(int vcpu_id);
diff --git a/target/arm/kvm32.c b/target/arm/kvm32.c
index 4e54e372a668..51f78f722b18 100644
--- a/target/arm/kvm32.c
+++ b/target/arm/kvm32.c
@@ -240,6 +240,11 @@ int kvm_arch_init_vcpu(CPUState *cs)
return kvm_arm_init_cpreg_list(cpu);
}
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+ return 0;
+}
+
typedef struct Reg {
uint64_t id;
int offset;
diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c
index 998d21f399f4..22d19c9aec6f 100644
--- a/target/arm/kvm64.c
+++ b/target/arm/kvm64.c
@@ -654,6 +654,11 @@ int kvm_arch_init_vcpu(CPUState *cs)
return kvm_arm_init_cpreg_list(cpu);
}
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+ return 0;
+}
+
bool kvm_arm_reg_syncs_via_cpreg_list(uint64_t regidx)
{
/* Return true if the regidx is a register we should synchronize
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 3b29ce5c0d08..29889aa6b001 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -1349,6 +1349,18 @@ int kvm_arch_init_vcpu(CPUState *cs)
return r;
}
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+ X86CPU *cpu = X86_CPU(cs);
+
+ if (cpu->kvm_msr_buf) {
+ g_free(cpu->kvm_msr_buf);
+ cpu->kvm_msr_buf = NULL;
+ }
+
+ return 0;
+}
+
void kvm_arch_reset_vcpu(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
diff --git a/target/mips/kvm.c b/target/mips/kvm.c
index 8e72850962e1..938f8f144b74 100644
--- a/target/mips/kvm.c
+++ b/target/mips/kvm.c
@@ -91,6 +91,11 @@ int kvm_arch_init_vcpu(CPUState *cs)
return ret;
}
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+ return 0;
+}
+
void kvm_mips_reset_vcpu(MIPSCPU *cpu)
{
CPUMIPSState *env = &cpu->env;
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 3bf0a46c3352..1967ccc51791 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -521,6 +521,11 @@ int kvm_arch_init_vcpu(CPUState *cs)
return ret;
}
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+ return 0;
+}
+
static void kvm_sw_tlb_put(PowerPCCPU *cpu)
{
CPUPPCState *env = &cpu->env;
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index e5e2b691f253..c2747c31649b 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -368,6 +368,16 @@ int kvm_arch_init_vcpu(CPUState *cs)
return 0;
}
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+ S390CPU *cpu = S390_CPU(cs);
+
+ g_free(cpu->irqstate);
+ cpu->irqstate = NULL;
+
+ return 0;
+}
+
void kvm_s390_reset_vcpu(S390CPU *cpu)
{
CPUState *cs = CPU(cpu);
Reviewed-by: Maran Wilson <maran.wilson@xxxxxxxxxx>
Thanks,
-Maran
