I haven't implemented dirty logging yet, but without things are just way too
slow. So for the time being I hacked in a dummy function that always tells
userspace we're dirty in VGA regions.
Please don't apply this. This patch is for reference only.
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
---
arch/powerpc/kvm/powerpc.c | 21 ++++++++++++++++++++-
1 files changed, 20 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 2a4551f..fba06ff 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -411,7 +411,26 @@ out:
int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
{
- return -ENOTSUPP;
+ /* XXX clear (and fill?) dirty log */
+ struct kvm_memory_slot *memslot;
+ int i, n;
+
+ if (log->slot >= KVM_MEMORY_SLOTS)
+ return -EINVAL;
+
+ memslot = &kvm->memslots[log->slot];
+
+ /* XXX This is a hack to get VGA updating working for now */
+ if (memslot->base_gfn != 0x8000)
+ return -ENOENT;
+
+ n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
+ for (i = 0; i < n; i++)
+ memslot->dirty_bitmap[i] = 0;
+
+ memslot->dirty_bitmap[0] = ( 1 << 30 ) - 1;
+
+ return 0;
}
long kvm_arch_vm_ioctl(struct file *filp,
--
1.6.0.2
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