Hello again... On Mon, Nov 16, 2009 at 10:59:11PM +0100, I wrote: > On Mon, Nov 16, 2009 at 03:09:18AM +0000, Samuel Thibault wrote: > > The branch, master-xen has been updated > > > commit c4cbe430a3051382714fb9b38d551c5bba65291e > > Author: Samuel Thibault <samuel.thiba...@ens-lyon.org> > > Date: Mon Nov 16 03:22:44 2009 +0100 > > > > Support unaligned writes > > Great! > > > One question about that one -- I'm not sure whether I asked you already > on IRC some months ago and you told me that this is not possible or > whether I didn't ask yet: as I understand the new code, in the unaligned > case, you copy the *whole* data to align its beginning to a page > boundary. What about instead only copying that much from the source > until you hit the next page boundary, enqueue that part (with its size > being less than a page's size) for processing in the backend, and then > enqueue the rest of the data, which now begins on a page boundary, > without having to copy it any further? Or aren't we allowed to split up > one device_write request into two?
Jeez, I didn't think about simply asking my own documentation system... <http://www.bddebian.com:8888/~hurd-web/open_issues/xen_crash_copy-size_le_page_size/>. But does that really answer my question? Regards, Thomas
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