Re: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86

From: Andi Kleen <andi@xxxxxxxxxxxxxx>
Date: Tue, 25 Mar 2008 19:07:00 +0100

On Tue, Mar 25, 2008 at 10:55:06AM -0700, Christoph Lameter wrote:

On Tue, 25 Mar 2008, Andi Kleen wrote:

Maybe sparse could be taught to check for this if it happens
in a single function? (cc'ing Al who might have some thoughts
on this). Of course if it happens spread out over multiple
functions sparse wouldn't help neither.

We could add debugging code to virt_to_page (or __pa) to catch these uses.

Hard to test all cases. Static checking would be better.

Or just not do it? I didn't think order 1 failures were that big a problem.

-Andi
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References:
- [00/14] Virtual Compound Page Support V3
  - From: Christoph Lameter
- [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86
  - From: Christoph Lameter
- Re: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86
  - From: Andi Kleen
- Re: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86
  - From: Christoph Lameter
- Re: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86
  - From: Andi Kleen
- Re: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86
  - From: Christoph Lameter

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