Messages in this thread |  | | Date | Wed, 21 May 2003 12:12:43 +0200 | From | mikpe@csd ... | Subject | Re: pat support in the kernel |
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Andi Kleen writes: > mikpe@csd.uu.se writes: > > > (Large pages ignoring PAT index bit 2, or something like that.) > > change_page_attr will force 4K pages for these anyways, so for the kernel > direct mapping it should not be an issue. > > For the hugetlbfs user mapping you may need to check the case, but > it's probably reasonable to EINVAL there. > > Other than that everything should be 4K mapped.
The bug is that 4K pages get the wrong PAT index; the large page thing is the trigger but the large pages themselves arent' affected.
So 4K pages need to be restricted to the low 4 PAT types. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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