Re: [PATCH]Fix broken VMI in 2.6.27-rc..
From: Jeremy Fitzhardinge
Date: Thu Aug 07 2008 - 19:46:55 EST
H. Peter Anvin wrote:
The fixmap area should never have been made movable. It's utter
braindamage.
Shrug. It's been like that for a couple of years now. It was one of
the very first paravirt-ops patches. It wasn't controversial then, and
nobody seems to have noticed since.
Given the x86 architecture, it's inevitable that PV will want to
reserve address space at the top of memory, and therefore the fixmap
area needs to be moved out of that space.
OK. But there's a few places where the code uses FIXADDR_TOP to mean
"top of kernel address space", so we'd need to come up with a proper
symbol for that.
J
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