On Mon, 09 Apr 2012 15:28:47 +0300
Avi Kivity <[email protected]> wrote:
> Ah, so it's protecting two paths at the same time: rmap.write_protect ->
> fast page fault, and lock(sptep) -> write protect.
>
> The whole thing needs to be documented very carefully in locking.txt,
> otherwise mmu.c will be write-protected to everyone except you.
Before changing mmu_lock usage, better describe it in locking.txt.
I guess from mmu.c git history, it is already restricted to a few
people who can describe that.
Takuya
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