Re: [Xen-devel] KEXEC: allocate crash note buffers at boot time v5

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 02.12.11 at 16:59, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
> On 02/12/11 15:43, Jan Beulich wrote:
>> I just had another look at the Dom0 side of things, and I fail to see why
>> you think boot time allocation is necessary: All Dom0 does with the
>> provided info is set up the resource tree. The data doesn't get stored
>> for any post-boot use. What am I overlooking?
> 
> /sbin/kexec opens /proc/iomem and looks for "Crash note" and interprets
> the range values.  This is how it grabs the locations to pack into its
> magic binary package.

So how does the hotplug scenario then get handled on native? I can't
imagine they expect things to remain stable across CPU unplug and
re-activation.

Jan


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