Re: [PATCH v3] x86, efi: Calling __pa() with an ioremap'd addressis invalid

[Matthew Garrett]

On Mon, Nov 07, 2011 at 01:34:01PM -0800, H. Peter Anvin wrote:
> On 11/07/2011 01:23 PM, Matthew Garrett wrote:
> > 
> > I know. But we also have to handle being called after 
> > ExitBootServices(). There are going to be people who don't want to deal 
> > with signing their kernel builds.
> >  
> 
> Could you clarify why these two are connected?

You can't execute anything unsigned until after ExitBootServices() has 
been called. Otherwise your bootloader is also a malware loader, and 
your signature probably gets blacklisted.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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