Re: [XenPPC] Re: [Xen-devel] [PATCH] [GNTTAB] expandable grant table

[Hollis Blanchard <hollisb@xxxxxxxxxx>]

On Mon, 2007-02-19 at 17:03 +0900, Isaku Yamahata wrote:
> Attached the updated patches. Please find them
> 
> - 13985_4fa9b86d41b8_grow_granttable_acm.patch
>       acm part. I did only compile test.
> 
> - 13986_cca098fd122c_grow_granttable_ia64.patch
>       ia64 part.
> 
> - 13987_f5f232aef7bd_grow_granttable_powerpc.patch
>       powerpc part. This patch prohibits growing grant table.
>       I didn't even compile test.
>       It needs review by xen/powerpc developers and they may
>       have their own opinions.

Hi Yamahata-san, thanks very much for your patch!

I'm confused about one thing though: why do we need to take a lock to
read d->grant_table->nr_grant_frames? It's a simple integer, so no lock
is required or useful.

-- 
Hollis Blanchard
IBM Linux Technology Center


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