From: Vivek Goyal <vgoyal@redhat.com>
To: Jeremy Kerr <jk@ozlabs.org>,
kexec@lists.infradead.org, dnlombar@ichips.intel.com
Subject: Re: [PATCH 0/8] kexec build system updates, to allow cross-kexec()ing
Date: Wed, 19 Dec 2007 09:45:33 -0500 [thread overview]
Message-ID: <20071219144533.GB14092@redhat.com> (raw)
In-Reply-To: <20071219143822.GA17705@nlxdcldnl2.cl.intel.com>
On Wed, Dec 19, 2007 at 06:38:22AM -0800, Lombard, David N wrote:
> On Tue, Dec 18, 2007 at 06:25:58PM -0500, Vivek Goyal wrote:
> > On Tue, Dec 18, 2007 at 05:47:55PM +0900, Jeremy Kerr wrote:
> >
> > > This allows us to kexec a powerpc64 kernel from a powerpc userspace.
> > > x86{,_64} users might find this handy too, but I don't have hardware
> > > to test.
> >
> > I think x86 it already happens. I think I can launch 64bit kernel from
> > a 32bit kexec.
>
> You certainly can...
>
If that's the case why should we build 64 bit purgatory for 32 bit kexec?
The only advantage I can think of is I can enter the new 64bit
kernel using 64bit entry point instead of 32bit entry point. Is that
the intention behind this work? Otherwise one should be able to launch
64bit kernel from a 32bit purgatory (Using 32bit entry point).
Thanks
Vivek
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next prev parent reply other threads:[~2007-12-19 14:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-18 8:47 [PATCH 0/8] kexec build system updates, to allow cross-kexec()ing Jeremy Kerr
2007-12-18 8:47 ` [PATCH 7/8] removed partially duplicated system headers Jeremy Kerr
2007-12-18 8:47 ` [PATCH 3/8] Consolidate BOOTLOADER defines Jeremy Kerr
2007-12-18 8:47 ` [PATCH 2/8] Use --target for target architecture specification Jeremy Kerr
2007-12-18 8:47 ` [PATCH 1/8] Enable building a 32 bit binary for ppc64 platforms Jeremy Kerr
2007-12-19 6:02 ` Geoff Levand
2007-12-18 8:47 ` [PATCH 5/8] Add gamecube to config.h defines Jeremy Kerr
2007-12-18 8:47 ` [PATCH 8/8] Don't assume we can re-make Makefile Jeremy Kerr
2007-12-18 8:47 ` [PATCH 4/8] Use config.h for defines Jeremy Kerr
2007-12-18 8:47 ` [PATCH 6/8] Build system simplification/standardisation Jeremy Kerr
2007-12-18 23:25 ` [PATCH 0/8] kexec build system updates, to allow cross-kexec()ing Vivek Goyal
2007-12-19 5:37 ` Jeremy Kerr
2007-12-19 14:38 ` Lombard, David N
2007-12-19 14:45 ` Vivek Goyal [this message]
2007-12-19 6:04 ` Simon Horman
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