Messages in this thread |  | | | Date | Thu, 05 Apr 2007 17:20:30 -0700 | | From | Zachary Amsden <> | | Subject | Re: [PATCH] Bugfix for VMI paravirt ops |
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Jeremy Fitzhardinge wrote: > Zachary Amsden wrote: > >> No, they are totally dependent. The reason interrupts are disabled is >> to stop kmap_atomic in interrupt handlers. With the kmap_atomic_pte >> changes, the whole interrupt disable jibberish goes away. >> > > But kmap_atomic_pte is a special case of kmap_atomic for ptes. > Interrupt routines can still use plain kmap_atomic for bouncebuffers and > so on. >
Ah, yes.
> A more general patch would be to make kmap/unmap_atomic pv_ops, and then > they can all be rolled together. I.e: check the type to see if special > pte handling needs to happen, etc. >
So the clean fix for this is still even further out. I don't think I want to hook kmap/unmap as paravirt-ops.
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