[PATCH 1/1] PPC32 : Huge-page support for ppc440

Josh Boyer jwboyer at linux.vnet.ibm.com
Tue Nov 7 13:00:33 EST 2006


Hi Edi,

On Mon, 2006-11-06 at 18:21 -0500, Edi Shmueli wrote:
> From: Edi Shmueli edi at linux.vnet.ibm.com
> 
> This patch enables applications to exploit the PPC440 TLB support for 
> huge-page mapping, to minimize TLB thrashing.
> Applications with large memory footprint that exploit this support, 
> experience minimal TLB misses, and boost in performance.
> NAS benchmarks performed with this patch indicate hundreds of percent of 
> improvement in performance for some application.
> Known limitations: because each PMD covers 2MB of the process address 
> space, the minimal huge-page size supported by this patch is 2M.
> 
> Signed-off-by: Edi Shmueli edi at linux.vnet.ibm.com

Your patch is line wrapped and the whitespace has been corrupted.  It's
also against a bit older version of the kernel.

Could you try to fixup these issues and resubmit?  Paul's powerpc.git
tree would probably be best to diff against.

josh




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