Re: [Fastboot] RE: [BROKEN PATCH] kexec for ia64

From: Khalid Aziz <khalid.aziz_at_hp.com>
Date: 2004-08-06 05:18:32
On Thu, 2004-08-05 at 11:05, Eric W. Biederman wrote:
> Hmm. Your mailer did not add any references lines.
> 
> 
> "Luck, Tony" <tony.luck@intel.com> writes:
> 
> > Jesse Barnes wrote:
> > >With the addition of some ACPI tables and such.  I don't think 
> > >those are freed by the kernel right now though, so it should
> > >be pretty easy to point at the originals from the newly kexec'd
> > >kernel, or make copies.
> > 
> > The "trim_bottom" and "trim_top" functions currently modify
> > the memory map in place.  But this would only make a difference
> > if you tried to kexec a kernel with a smaller granule size than
> > the originally running kernel, and even then would only
> > result in missing seeing some memory that you might have been
> > able to use.
> 
> On x86 and x86-64 we can recover the memory map from /proc/iomem.
> 
> Does that work on ia64?  Can that be fixed to work on ia64?

No, it does not work on ia64. Once I have basic code in place to get
somewhat working kexec on ia64, I am considering looking into fixing
/proc/iomem.

> 
> All of that information needs to get exported to user space so
> /sbin/kexec can pass it to the new kernel.
> 
> Eric

-- 
Khalid

====================================================================
Khalid Aziz                                Linux and Open Source Lab
(970)898-9214                                        Hewlett-Packard
khalid_aziz@hp.com                                  Fort Collins, CO

"The Linux kernel is subject to relentless development" 
				- Alessandro Rubini


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Received on Thu Aug 5 15:28:24 2004

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