Messages in this thread | | | Subject | Re: [PATCH v4] powerpc 8xx: Fixing issue with CONFIG_PIN_TLB | From | Scott Wood <> | Date | Fri, 27 Sep 2013 16:43:52 -0500 |
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On Tue, 2013-09-24 at 10:18 +0200, Christophe Leroy wrote: > Activating CONFIG_PIN_TLB is supposed to pin the IMMR and the first three > 8Mbytes pages. But the setting of MD_CTR to a pinnable entry was missing before > the pinning of the third 8Mb page. As the index is decremented module 28 > (MD_RSV4D is set) after every DTLB update, the third 8Mbytes page was > not pinned.
The examples you showed weren't quite modulo 28, more like "if (x >= 28) x -= 4". I'll fix up the changelog on applying, to read something like "As the index is decremented to a value within the first 28 entries (MD_RSV4D is set)...".
-Scott
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