[PATCH 3/3] Limit E820 map when a user-defined memory map is specified

Bernhard Walle bwalle at suse.de
Sun Jun 22 15:46:32 EDT 2008

* "Yinghai Lu" <yhlu.kernel at gmail.com> [2008-06-20 13:34]:
> On Fri, Jun 20, 2008 at 8:57 AM, Bernhard Walle <bwalle at suse.de> wrote:
> > This patch brings back limiting of the E820 map when a user-defined
> > E820 map is specified. While the behaviour of i386 (32 bit) was to limit
> > the E820 map (and /proc/iomem), the behaviour of x86-64 (64 bit) was not to
> > limit.
> then if you kexec new kernel, the second kernel will be have that
> limitation too.
> any problem that you encountered without this patch?

No, because the new kexec tool uses the /proc/firmware_mem or whatever
it is called.

Bernhard Walle, SUSE LINUX Products GmbH, Architecture Development

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