Re: [PATCH] efi: avoid error message when booting under Xen

[Jürgen Groß <jgross@xxxxxxxx>]

On 10.07.20 15:27, Ard Biesheuvel wrote:
> On Fri, 10 Jul 2020 at 13:17, Bartlomiej Zolnierkiewicz
> <b.zolnierkie@xxxxxxxxxxx> wrote:
> > [ added EFI Maintainer & ML to Cc: ]
> >
> > Hi,
> >
> > On 7/9/20 11:17 AM, Jürgen Groß wrote:
> > > On 28.06.20 10:50, Jürgen Groß wrote:
> > > > Ping?
> > > >
> > > > On 10.06.20 16:10, Juergen Gross wrote:
> > > > > efifb_probe() will issue an error message in case the kernel is booted
> > > > > as Xen dom0 from UEFI as EFI_MEMMAP won't be set in this case. Avoid
> > > > > that message by calling efi_mem_desc_lookup() only if EFI_PARAVIRT
> > > > > isn't set.
> Why not test for EFI_MEMMAP instead of EFI_BOOT?
Honestly I'm not sure EFI_BOOT is always set in that case. If you tell
me it is fine to just replace the test to check for EFI_MEMMAP I'm fine
to modify my patch.


Juergen