Re: [Xen-devel] [PATCH 2/4] EFI/early: add /mapbs to map EfiBootServices{Code, Data}

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Jun 09, 2015 at 03:03:18PM +0100, Andrew Cooper wrote:
> On 09/06/15 14:53, Jan Beulich wrote:
> > From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> >
> > To help on certain platforms to run.
> >
> > Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> >
> > --- a/xen/arch/x86/efi/efi-boot.h
> > +++ b/xen/arch/x86/efi/efi-boot.h
> > @@ -148,12 +148,16 @@ static void __init efi_arch_process_memo
> >  
> >          switch ( desc->Type )
> >          {
> > -        default:
> > -            type = E820_RESERVED;
> > -            break;
> > -        case EfiConventionalMemory:
> >          case EfiBootServicesCode:
> >          case EfiBootServicesData:
> > +            if ( map_bs )
> 
> if ( !map_bs ) surely?  It is the else case which sets a type of E820_RAM.

We want the EfiBootServices{Code|Data} to be E820_RESERVED and this
sets it to that if map_bs is set.

If map_bs is not set then we treat it as E820_RAM.

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