Re: [patch] mm: Ensure proper alignment for node_remap_start_pfn

From: Ravikiran G Thirumalai
Date: Thu Jul 28 2005 - 13:21:29 EST

On Thu, Jul 28, 2005 at 10:20:26AM -0700, Dave Hansen wrote:
> On Wed, 2005-07-27 at 18:31 -0700, Ravikiran G Thirumalai wrote:
> > On Wed, Jul 27, 2005 at 06:17:24PM -0700, Andrew Morton wrote:
> > > Ravikiran G Thirumalai <kiran@xxxxxxxxxxxx> wrote:
> > > >
> > Yes, it does cause a crash.
> I don't know of any NUMA x86 sub-arches that have nodes which are
> aligned on any less than 2MB. Is this an architecture that's supported
> in the tree, today?

SRAT need not guarantee any alignment at all in the memory affinity
structure (the address in 64-bit byte address). And yes, there are x86-numa
machines that run the latest kernel tree and face this problem.

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