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From: Siddhartha Chhabra <siddhartha.chhabra@gmail.com>
To: Bryan Donlan <bdonlan@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: Kernel vs user memory
Date: Thu, 18 Mar 2010 21:29:07 -0400	[thread overview]
Message-ID: <49f90a801003181829w63b3e96fp79c015b15b8d535b@mail.gmail.com> (raw)
In-Reply-To: <3e8340491003181806t201218acod8ea408d1993cbfc@mail.gmail.com>

On Thu, Mar 18, 2010 at 9:06 PM, Bryan Donlan <bdonlan@gmail.com> wrote:

>
> That is correct. The kernel can avoid a PF if it wants to by ensuring
> the page tables are set up properly from the start; and physical
> addresses below a certain value (which varies by architecture) can be
> accessed directly without any setup at all.
>

Thank you for your time, this discussion was really helpful.

Thanks once again
Sid

  reply	other threads:[~2010-03-19  1:29 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-17  2:56 sidc7
2009-01-17  4:16 ` Bryan Donlan
2009-01-17  4:21   ` sidc7
2009-01-17  5:26     ` Bryan Donlan
     [not found]       ` <49f90a801003181710v5e08ccc8jdd26ec899e75bdb9@mail.gmail.com>
2010-03-19  0:28         ` Bryan Donlan
     [not found]           ` <49f90a801003181747m5078d9c2y3cc8421203a7b1e6@mail.gmail.com>
2010-03-19  1:06             ` Bryan Donlan
2010-03-19  1:29               ` Siddhartha Chhabra [this message]
2009-01-17  6:26 ` H. Peter Anvin
2009-01-17  6:34   ` sidc7
2009-01-17  6:38     ` H. Peter Anvin
2009-01-17  6:42       ` sidc7
2009-01-17  7:27         ` H. Peter Anvin
2009-01-19 20:03           ` sidc7

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