Messages in this thread | | | Date | Mon, 28 Jan 2008 13:28:56 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86: Construct 32 bit boot time page tables in native format. |
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Rafael J. Wysocki wrote: > On Monday, 28 of January 2008, Jeremy Fitzhardinge wrote: >> Rafael J. Wysocki wrote: >>> Actually, no. We only do that with the kernel code mapping which should be >>> safe as long as TLBs are not flushed (and they aren't). >>> >> Er, what? Assuming the TLB will retain some mappings while you >> overwrite the pagetable is a highly dubious prospect. Are you copying >> the same values over, or something else? > > As long as a relocatable kernel is not used to restore a non-relocatable one > (or vice versa), we're copying the same values over. >
So that case is deliberately considered broken?
-hpa
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