Messages in this thread | | | Date | Thu, 15 Mar 2012 14:24:46 +0000 | From | Matthew Garrett <> | Subject | Re: [PATCH] EFI: Only set regions uncacheable if they support it |
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On Thu, Mar 15, 2012 at 07:17:56AM -0700, H. Peter Anvin wrote: > On 03/15/2012 07:07 AM, Matthew Garrett wrote: > > > > I have a report of a system that fails to boot with an MCE during EFI > > setup. The memory range is marked reserved and claims not to support any > > caching type, which I think probably translates as "Don't do anything to > > this region ever". > > > > In other words, "don't map me"... not something we really support at the > moment, but perhaps we should; at least until we find systems in the > field that break with that constraint :(
Mapping should be harmless as long as we then don't touch it? I can't think of any circumstances where we would.
-- Matthew Garrett | mjg59@srcf.ucam.org
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