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kvm: move kvm to use memory notifiers 

remove direct kvm calls from exec.c, make
kvm use memory notifiers framework instead.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2010-01-27 22:07:21 +02:00 committed by Anthony Liguori
parent 46dbef6ade
commit 7b8f3b7834
3 changed files with 35 additions and 30 deletions
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17
exec.c
View File

@ -1988,12 +1988,6 @@ int cpu_physical_memory_set_dirty_tracking(int enable)
{
int ret = 0;
in_migration = enable;
if (kvm_enabled()) {
ret = kvm_set_migration_log(enable);
}
if (ret < 0) {
return ret;
}
ret = cpu_notify_migration_log(!!enable);
return ret;
}
@ -2006,14 +2000,8 @@ int cpu_physical_memory_get_dirty_tracking(void)
int cpu_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
target_phys_addr_t end_addr)
{
int ret = 0;
int ret;
if (kvm_enabled()) {
ret = kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
}
if (ret < 0) {
return ret;
}
ret = cpu_notify_sync_dirty_bitmap(start_addr, end_addr);
return ret;
}
@ -2426,9 +2414,6 @@ void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
ram_addr_t orig_size = size;
void *subpage;
if (kvm_enabled())
kvm_set_phys_mem(start_addr, size, phys_offset);
cpu_notify_set_memory(start_addr, size, phys_offset);
if (phys_offset == IO_MEM_UNASSIGNED) {

40
kvm-all.c
View File

@ -265,7 +265,7 @@ int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size)
KVM_MEM_LOG_DIRTY_PAGES);
}
int kvm_set_migration_log(int enable)
static int kvm_set_migration_log(int enable)
{
KVMState *s = kvm_state;
KVMSlot *mem;
@ -300,8 +300,8 @@ static int test_le_bit(unsigned long nr, unsigned char *addr)
* @start_add: start of logged region.
* @end_addr: end of logged region.
*/
int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
target_phys_addr_t end_addr)
static int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
target_phys_addr_t end_addr)
{
KVMState *s = kvm_state;
unsigned long size, allocated_size = 0;
@ -402,9 +402,9 @@ int kvm_check_extension(KVMState *s, unsigned int extension)
return ret;
}
void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
ram_addr_t phys_offset)
static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
ram_addr_t phys_offset)
{
KVMState *s = kvm_state;
ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK;
@ -540,6 +540,33 @@ void kvm_set_phys_mem(target_phys_addr_t start_addr,
}
}
static void kvm_client_set_memory(struct CPUPhysMemoryClient *client,
target_phys_addr_t start_addr,
ram_addr_t size,
ram_addr_t phys_offset)
{
kvm_set_phys_mem(start_addr, size, phys_offset);
}
static int kvm_client_sync_dirty_bitmap(struct CPUPhysMemoryClient *client,
target_phys_addr_t start_addr,
target_phys_addr_t end_addr)
{
return kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
}
static int kvm_client_migration_log(struct CPUPhysMemoryClient *client,
int enable)
{
return kvm_set_migration_log(enable);
}
static CPUPhysMemoryClient kvm_cpu_phys_memory_client = {
.set_memory = kvm_client_set_memory,
.sync_dirty_bitmap = kvm_client_sync_dirty_bitmap,
.migration_log = kvm_client_migration_log,
};
int kvm_init(int smp_cpus)
{
static const char upgrade_note[] =
@ -636,6 +663,7 @@ int kvm_init(int smp_cpus)
goto err;
kvm_state = s;
cpu_register_phys_memory_client(&kvm_cpu_phys_memory_client);
return 0;

8
kvm.h
View File

@ -35,16 +35,8 @@ int kvm_init_vcpu(CPUState *env);
int kvm_cpu_exec(CPUState *env);
void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
ram_addr_t phys_offset);
int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
target_phys_addr_t end_addr);
int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
int kvm_set_migration_log(int enable);
int kvm_has_sync_mmu(void);
int kvm_has_vcpu_events(void);