From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Mosberger Date: Mon, 26 Jul 2004 23:09:51 +0000 Subject: Re: [BROKEN PATCH] kexec for ia64 Message-Id: <16645.36671.580858.707082@napali.hpl.hp.com> List-Id: References: <200407261524.40804.jbarnes@engr.sgi.com> In-Reply-To: <200407261524.40804.jbarnes@engr.sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> On Mon, 26 Jul 2004 15:24:40 -0700, Jesse Barnes said: Jesse> I'm also worried about a few things in this patch. Is Jesse> relocate_kernel.S really necessary in 2.6? Can we copy the Jesse> kernel to a contiguous 64MB aligned area, drop into phys mode Jesse> and just jump to it? Also, what about EFI boot services and Jesse> PROM tables that the kernel frees part way through boot? Jesse> Should we copy those into a safe place for the new image at Jesse> boot time? Or just leave them there if CONFIG_KEXEC is Jesse> enabled? I suspect option one is really feasible. The first one probably just doesn't work and the second one could waste relatively large amounts of memory. Perhaps the third option of not using EFI boot-time services at all during kexec should be considered. --david