Messages in this thread | | | Date | Thu, 13 Jun 2002 00:52:38 +0200 | From | Andi Kleen <> | Subject | Re: [patch] pageattr update |
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On Wed, Jun 12, 2002 at 07:04:43AM +0200, Benjamin LaHaise wrote: > Below are some updates to the pageattr patch you posted earlier. The > first set of changes were to add change_page_attrs in several paths > where the AGP and DRM code would allocate a page and then call > ioremap_nocache on it to create an uncachable mapping. Secondly, I
I don't think these changes are needed. The GART tables itself have no physical alias and the CPU AFAIK deals fine with virtual aliases.
> removed the #ifdef __i386__ around the change_page_attr hook, and > instead put dummy macros in the headers for the various other archs. > There was a race in pageattr.c that would make the P4 unhappy, so I > moved the pte page free to after the tlb flush. The tlb flush was
I had already fixed that, but thanks.
> not flushing global pages, so I replaced the code with a call to > flush_tlb_all() to do the job. Lastly, since the top page of the > page tables on x86 is unique to each mm and contains copies of the > pmd entries in non-PAE mode, I added a function to walk all mms via > the mmlist to update the pmds before the tlb flush.
Urks. last version was only tested on PAE @)
Will release a new version tomorrow.
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