lkml.org 
[lkml]   [2014]   [Aug]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/2] UEFI arm64: add noefi boot param
On 08/06/14 at 02:40pm, Ard Biesheuvel wrote:
> On 6 August 2014 10:38, Dave Young <dyoung@redhat.com> wrote:
> >
> > Adding a noefi boot param like in X86 to disable efi runtime services support.
> >
> > This will be useful for debugging uefi problems. Also it will be useful
> > for later kexec/kdump work. Kexec on uefi support in X86 depends on a fixed vm
> > area specific for uefi runtime 1:1 mapping, kernel will switch to a different
> > page table for any uefi runtime callback in virtual mode. In arm64 similar
> > work probably is necessary. But kexec boot will just works with 'noefi' with
> > the limitaion of lacking runtime services. The runtime services is not critical
> > for kdump kernel for now. So as for kexec/kdump just leave the 1:1 mapping a
> > future work.
> >
>
> Can we find a better name? You will still be using the UEFI memory map
> rather than the DT memory nodes (which will have been deleted by the
> stub), and things like SMBIOS and ACPI that hinge off UEFI remain
> enabled as well.
>
Hi, Ard

Leif suggested efi=noruntime, I think that will be better to you?

Thanks for review.
Dave


\
 
 \ /
  Last update: 2014-08-07 03:41    [W:2.304 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site