[PATCH] [Powerpc V2] fix switch_slb handling of 1T ESID values

[Benjamin Herrenschmidt]

On Mon, 2007-10-29 at 13:32 -0500, Will Schmidt wrote:
> [Powerpc V2] fix switch_slb handling of 1T ESID values
> 
> Now that we have 1TB segment size support, we need to be using the
> GET_ESID_1T macro when comparing ESID values for pc,stack, and
> unmapped_base within switch_slb().    A new helper function called
> esids_match() contains the logic for deciding when to call GET_ESID
> and GET_ESID_1T.
> 
> This also happens to fix a duplicate-slb-entry inspired machine-check
> exception I was seeing when trying to run java on a power6 partition.
> 
> Tested on power6 and power5.
> 
> Signed-Off-By:  Will Schmidt <will_schmidt at vnet.ibm.com>
> ---

Acked-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>