kdump/kexec on EFI-enabled x2apic platforms

David N. Lombard dnlombar at ichips.intel.com
Wed Mar 31 18:24:50 EDT 2010

On Mon, Mar 29, 2010 at 01:01:04PM -0700, Jack Steiner wrote:
> All -
> I just started debugging kdump/kexec on our UV platform and
> have run into some problems. I suspect others have encountered these
> same or similar problems. Any help would be appreciated.
> Our platform uses EFI boot. It is Nehalem based & has a large number of cpus.
> The BIOS enables x2apic mode and the kernel runs with interrupt remapping enabled.
> Note that some apicids have more than 8 bits - x2apic mode is required.

What are you using as a boot loader?  I've tested kexec with elilo 3.8 and
got good results.  But, that was early last year, so I'll need to try it out
with production hardware and the current firmware and sw stack.  I'll try to
get to that this week, and let you know the results.

David N. Lombard, Intel, Irvine, CA
I do not speak for Intel Corporation; all comments are strictly my own.

More information about the kexec mailing list