Re: [PATCH] x86/sev: Fully map the #VC exception stacks

[Joerg Roedel]

On Fri, Oct 01, 2021 at 02:58:28PM +0200, Borislav Petkov wrote:
> On Fri, Oct 01, 2021 at 01:50:24PM +0200, Joerg Roedel wrote:
> > Yeah, I think the right fix is to export cea_map_percpu_pages() and move
> > the cea_map_stack() macro to a header and use it to map the VC stacks.
> 
> I'll do you one better: Put the #VC stack mapping into
> percpu_setup_exception_stacks(), where it naturally belongs and where
> the other stacks are being mapped instead of doing everything "by hand"
> like now and exporting random helpers.

The VC stack is only allocated and mapped when SEV-ES is detected, so
they can't always be mapped by generic code.

Regards,

	Joerg