From: will schmidt <will_schmidt@vnet.ibm.com>
Date: Tue, 30 Oct 2007 18:59:33 +0000 (+1100)
Subject: [POWERPC] Fix switch_slb handling of 1T ESID values
X-Git-Tag: v2.6.24-rc3~175^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=465ccab9eb8209a2a402710b24a9bff127b25b94;p=pandora-kernel.git

[POWERPC] 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 fixes 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@vnet.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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