motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

memory: manage coalesced mmio via a MemoryListener

Browse source 
Instead of calling a global function on coalesced mmio changes, which
routes the call to kvm if enabled, add coalesced mmio hooks to
MemoryListener and make kvm use that instead.

The motivation is support for multiple address spaces (which means we
we need to filter the call on the right address space) but the result
is cleaner as well.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2012-10-02 18:21:54 +02:00
parent bf83601fdd
commit 95d2994a2f
6 changed files with 27 additions and 39 deletions
Download patch file Download diff file Expand all files Collapse all files

20
kvm-all.c
View file

@ -454,9 +454,10 @@ static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section)
return ret;
}
int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
static void kvm_coalesce_mmio_region(MemoryListener *listener,
MemoryRegionSection *secion,
target_phys_addr_t start, target_phys_addr_t size)
{
int ret = -ENOSYS;
KVMState *s = kvm_state;
if (s->coalesced_mmio) {
@ -466,15 +467,14 @@ int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
zone.size = size;
zone.pad = 0;
ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
(void)kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
}
return ret;
}
int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
static void kvm_uncoalesce_mmio_region(MemoryListener *listener,
MemoryRegionSection *secion,
target_phys_addr_t start, target_phys_addr_t size)
{
int ret = -ENOSYS;
KVMState *s = kvm_state;
if (s->coalesced_mmio) {
@ -484,10 +484,8 @@ int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
zone.size = size;
zone.pad = 0;
ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
(void)kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
}
return ret;
}
int kvm_check_extension(KVMState *s, unsigned int extension)
@ -817,6 +815,8 @@ static MemoryListener kvm_memory_listener = {
.log_global_stop = kvm_log_global_stop,
.eventfd_add = kvm_mem_ioeventfd_add,
.eventfd_del = kvm_mem_ioeventfd_del,
.coalesced_mmio_add = kvm_coalesce_mmio_region,
.coalesced_mmio_del = kvm_uncoalesce_mmio_region,
.priority = 10,
};