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Re: [Xen-devel] using PageForeign for pte allocation vs. shortcutting __
| To: | Jan Beulich <jbeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] using PageForeign for pte allocation vs. shortcutting __pte_free_tlb() |
| From: | Gerd Hoffmann <kraxel@xxxxxxx> |
| Date: | Tue, 09 Jan 2007 11:51:21 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 09 Jan 2007 02:51:01 -0800 |
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Jan Beulich wrote: > In the course of trying to get CONFIG_HIGHPTE to work I stumbled across this > inconsistency between i386 and x86-64 Linux: i386 uses SetPageForeign() in > (one the non-highpte) case of pte_alloc_one(), and leaves intact native's > definition of __pte_free_tlb(), whereas x86-64 doesn't use the former but > shortcuts the latter to just invoke pte_free(). Obviously it would be nice for > these two to be consistent, x86-64 has no HIGHMEM zone, thus CONFIG_HIGHPTE has no effect (I'm surprised it exists in the first place ...). cheers, Gerd -- Gerd Hoffmann <kraxel@xxxxxxx> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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