Avi Kivity wrote:
On 03/15/2010 10:33 AM, Marcelo Tosatti wrote:
Are there any good ways to solve this kind of problems?
You can introduce a new get_dirty_log ioctl that passes the address
of the next bitmap in userspace, and use it (after pinning with
get_user_pages), instead of vmalloc'ing.
Thank you for your advice!
No pinning please, put_user_bit() or set_bit_user().
(can be implemented generically using get_user_pages() and
kmap_atomic(), but x86 should get an optimized implementation)
Given your advice last time, I started this with my colleague.
-- We were just talking about how to strugle with every architectures.
As your comment, we'll make the generic implementation with optimized one
for x86 first.
Thanks
Takuya
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