On 15/12/06 16:38, "Markus Armbruster" <armbru@xxxxxxxxxx> wrote:
> This patch fixes the locking, but leaves open a race between
> xenfb_update_screen() and do_no_page(). See the source code for a
> detailed explanation of how it works, and where it fails.
That's a bit of a shame. Is there any way we could use do_file_page() and
have a populate hook (which gets to install the PTE itself)? Or are there
lots of assumptions about VMAs that would take this path, assert
VM_NONLINEAR, etc?
 -- Keir
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