Messages in this thread | | | Date | Thu, 24 Jan 2008 15:40:37 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH] x86: Construct 32 bit boot time page tables in native format. |
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H. Peter Anvin wrote: > While we're mucking around in this area, there is another thing which > we should eventually get around to fixing: > > we need a set of page tables with an identity mapping as well as the > kernel mapping, for trampolining (during startup, but also during > things like ACPI suspend/resume.) Right now, we let those be the > swapper page tables, but that's probably not really a good idea, since > it can hide bugs.
So you're suggesting a second system pagetable which has a P=V alias as well as the normal kernel mapping, used only when we actually need that alias? Sounds simple enough to arrange.
J
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