[patch 2/3] Add flags parameter to reserve_bootmem_generic()

Vivek Goyal vgoyal at redhat.com
Mon Jun 9 16:54:29 EDT 2008

On Mon, Jun 09, 2008 at 10:42:11PM +0200, Bernhard Walle wrote:
> Hi Vivek,
> * Vivek Goyal <vgoyal at redhat.com> [2008-06-09 16:29]:
> >
> > Can you please put some more explanation comment here to explain that
> > why it is ok to return with success, despite the fact that we never
> > reserved any memory.
> Do you think that's ok?
>     When booting the kdump kernel, the MP tables (for example,
>     or other firmware-reserved memory) of the BIOS are beyond
>     end_pfn. (kexec-tools adds exactmap parameters to the kernel
>     so that the E820 map is no longer used.) Therefore, it's ok
>     to return "success" here. For normal boot, the MP tables
>     must be reserved normally.

Looks good. Thanks


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