| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] [PATCH] [IOEMU]: fix the crash of HVM live migration wit
On Wed, 12 Aug 2009, Zhai, Edwin wrote:
> One interface should be better. But I'm not sure about the perf
> implications. You know, qemu use logdirty for its device emulation even
> without live migration, e.g. vga screen refresh. Changing to
> xc_hvm_modified_memory would cause many hypercall to set/get the bitmap
> in xen...
>
For vga screen refresh qemu calls xc_hvm_track_dirty_vram and
then cpu_physical_memory_set_dirty; the latter needs only to call
xc_hvm_modified_memory in case logdirty is active.
In facts your patch is modifying logdirty_bitmap only when
logdirty_bitmap != NULL that is when a logdirty event is triggered on
xenstore.
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home