Re: Linux 2.6.35.2

From: Linus Torvalds
Date: Sat Aug 14 2010 - 17:57:31 EST


On Sat, Aug 14, 2010 at 12:47 PM, Ed Tomlinson <edt@xxxxxx> wrote:
> On Saturday 14 August 2010 14:47:45 Linus Torvalds wrote:
>>
>> Just to verify: you have CONFIG_HIGHPTE enabled on a x86-32 kernel,
>> right? I'd have expected this to not ever show up anywhere else, and
>> I'm just verifying that there isn't anything else going on. I'm
>> appending the commit message, the patch hasn't changed.
>
> No.  I have a x86-64 based kernel (amd64).

Hmm. On x86-64, pte_unmap() is a no-op. So moving it around should not
matter one whit. We don't even have a debug mode to turn it into some
kind of "check that we use it properly in an atomic region" which we
_could_ do.

Can you send me the messages you saw without that patch? There's
something odd going on here. I don't like the fact that the patch
apparently makes a difference for you. It shouldn't.

Linus
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