From: Geoff Levand <geoff@infradead.org>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: marc.zyngier@arm.com, Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org, kexec@lists.infradead.org,
christoffer.dall@linaro.org
Subject: Re: [PATCH 6/7] arm64/kexec: Add core kexec support
Date: Thu, 23 Oct 2014 16:08:22 -0700 [thread overview]
Message-ID: <1414105702.23621.12.camel@smoke> (raw)
In-Reply-To: <1412893600.31184.1.camel@smoke>
Hi Vivek,
On Thu, 2014-10-09 at 15:26 -0700, Geoff Levand wrote:
> On Tue, 2014-10-07 at 16:22 -0400, Vivek Goyal wrote:
> > Problem is this that if you put code in kernel once which does something
> > which purgatory ought to do, you will never be able to remove it for
> > backward compatibility reasons. Older versions of kexec-tools will
> > continue to rely on it. Also how in kernel you would know that now
> > purgatory will take care of this and kernel does not have to worry
> > about something. So it is a good idea to integrate the purgatory support
> > from the very beginning.
>
> I agree with you. I will add a purgatory.
I added a purgatory stage to kexec-tools, and verified it works
as expected. My current kernel patches were generic enough to
support a purgatory stage without any additional changes. I did
make some minor changes to the kernel comments so they use the
language of loading an 'image' instead of a 'kernel'.
I'll post a V5 kernel series. Please review and reply with your
ack if you find them acceptable.
-Geoff
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WARNING: multiple messages have this Message-ID (diff)
From: geoff@infradead.org (Geoff Levand)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/7] arm64/kexec: Add core kexec support
Date: Thu, 23 Oct 2014 16:08:22 -0700 [thread overview]
Message-ID: <1414105702.23621.12.camel@smoke> (raw)
In-Reply-To: <1412893600.31184.1.camel@smoke>
Hi Vivek,
On Thu, 2014-10-09 at 15:26 -0700, Geoff Levand wrote:
> On Tue, 2014-10-07 at 16:22 -0400, Vivek Goyal wrote:
> > Problem is this that if you put code in kernel once which does something
> > which purgatory ought to do, you will never be able to remove it for
> > backward compatibility reasons. Older versions of kexec-tools will
> > continue to rely on it. Also how in kernel you would know that now
> > purgatory will take care of this and kernel does not have to worry
> > about something. So it is a good idea to integrate the purgatory support
> > from the very beginning.
>
> I agree with you. I will add a purgatory.
I added a purgatory stage to kexec-tools, and verified it works
as expected. My current kernel patches were generic enough to
support a purgatory stage without any additional changes. I did
make some minor changes to the kernel comments so they use the
language of loading an 'image' instead of a 'kernel'.
I'll post a V5 kernel series. Please review and reply with your
ack if you find them acceptable.
-Geoff
next prev parent reply other threads:[~2014-10-23 23:08 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 0:23 [PATCH 0/7] arm64 kexec kernel patches V3 Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 2/7] arm64: Convert hcalls to use ISS field Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-10-03 10:51 ` Mark Rutland
2014-10-03 10:51 ` Mark Rutland
2014-10-03 21:56 ` Geoff Levand
2014-10-03 21:56 ` Geoff Levand
2014-10-06 10:13 ` Mark Rutland
2014-10-06 10:13 ` Mark Rutland
2014-09-25 0:23 ` [PATCH 4/7] arm64: Add EL2 switch to soft_restart Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 3/7] arm64: Add new hcall HVC_CALL_FUNC Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 1/7] arm64/kvm: Fix assembler compatibility of macros Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-10-03 10:26 ` Mark Rutland
2014-10-03 10:26 ` Mark Rutland
2014-10-03 22:27 ` Geoff Levand
2014-10-03 22:27 ` Geoff Levand
2014-10-06 10:10 ` Mark Rutland
2014-10-06 10:10 ` Mark Rutland
2014-09-25 0:23 ` [PATCH 7/7] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 6/7] arm64/kexec: Add core kexec support Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 18:28 ` Vivek Goyal
2014-09-25 18:28 ` Vivek Goyal
2014-09-25 19:02 ` Geoff Levand
2014-09-25 19:02 ` Geoff Levand
2014-09-25 19:08 ` Vivek Goyal
2014-09-25 19:08 ` Vivek Goyal
2014-09-30 18:18 ` Vivek Goyal
2014-09-30 18:18 ` Vivek Goyal
2014-09-30 19:54 ` Geoff Levand
2014-09-30 19:54 ` Geoff Levand
2014-10-01 14:56 ` Vivek Goyal
2014-10-01 14:56 ` Vivek Goyal
2014-10-03 18:35 ` Geoff Levand
2014-10-03 18:35 ` Geoff Levand
2014-10-07 13:44 ` Vivek Goyal
2014-10-07 13:44 ` Vivek Goyal
2014-10-07 18:42 ` Geoff Levand
2014-10-07 18:42 ` Geoff Levand
2014-10-07 18:45 ` Vivek Goyal
2014-10-07 18:45 ` Vivek Goyal
2014-10-07 20:12 ` Geoff Levand
2014-10-07 20:12 ` Geoff Levand
2014-10-07 20:22 ` Vivek Goyal
2014-10-07 20:22 ` Vivek Goyal
2014-10-09 22:26 ` Geoff Levand
2014-10-09 22:26 ` Geoff Levand
2014-10-23 23:08 ` Geoff Levand [this message]
2014-10-23 23:08 ` Geoff Levand
2014-10-08 9:28 ` Mark Rutland
2014-10-08 9:28 ` Mark Rutland
2014-10-07 18:48 ` Vivek Goyal
2014-10-07 18:48 ` Vivek Goyal
2014-10-01 16:16 ` Mark Rutland
2014-10-01 16:16 ` Mark Rutland
2014-10-01 17:36 ` Vivek Goyal
2014-10-01 17:36 ` Vivek Goyal
2014-10-01 17:56 ` Mark Rutland
2014-10-01 17:56 ` Mark Rutland
2014-10-01 17:47 ` Vivek Goyal
2014-10-01 17:47 ` Vivek Goyal
2014-10-01 18:03 ` Mark Rutland
2014-10-01 18:03 ` Mark Rutland
2014-10-01 18:09 ` Vivek Goyal
2014-10-01 18:09 ` Vivek Goyal
2014-10-01 18:19 ` Mark Rutland
2014-10-01 18:19 ` Mark Rutland
2014-10-01 18:31 ` Vivek Goyal
2014-10-01 18:31 ` Vivek Goyal
2014-10-01 19:22 ` Vivek Goyal
2014-10-01 19:22 ` Vivek Goyal
2014-10-02 10:26 ` Mark Rutland
2014-10-02 10:26 ` Mark Rutland
2014-10-02 13:54 ` Vivek Goyal
2014-10-02 13:54 ` Vivek Goyal
2014-10-02 16:53 ` Mark Rutland
2014-10-02 16:53 ` Mark Rutland
2014-09-30 23:59 ` [PATCH V2 " Geoff Levand
2014-09-30 23:59 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 5/7] arm64: Move proc-macros.S to include/asm Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-30 20:29 ` [PATCH 0/7] arm64 kexec kernel patches V3 Vivek Goyal
2014-09-30 20:29 ` Vivek Goyal
2014-09-30 21:27 ` Geoff Levand
2014-09-30 21:27 ` Geoff Levand
2014-10-02 19:08 ` Vivek Goyal
2014-10-02 19:08 ` Vivek Goyal
2014-10-02 22:59 ` Geoff Levand
2014-10-02 22:59 ` Geoff Levand
2014-10-07 13:43 ` Vivek Goyal
2014-10-07 13:43 ` Vivek Goyal
2014-10-07 14:06 ` Mark Rutland
2014-10-07 14:06 ` Mark Rutland
2014-10-01 15:19 ` Vivek Goyal
2014-10-01 15:19 ` Vivek Goyal
2014-10-03 21:16 ` Geoff Levand
2014-10-03 21:16 ` Geoff Levand
2014-10-07 13:40 ` Vivek Goyal
2014-10-07 13:40 ` Vivek Goyal
2014-10-07 18:29 ` Geoff Levand
2014-10-07 18:29 ` Geoff Levand
2014-10-08 9:42 ` Mark Rutland
2014-10-08 9:42 ` Mark Rutland
2014-10-09 3:21 ` Dave Young
2014-10-09 3:21 ` Dave Young
2014-10-09 10:09 ` Mark Rutland
2014-10-09 10:09 ` Mark Rutland
2014-10-09 10:19 ` Ard Biesheuvel
2014-10-09 10:19 ` Ard Biesheuvel
2014-10-10 5:30 ` Dave Young
2014-10-10 5:30 ` Dave Young
2014-10-07 15:22 ` Mark Rutland
2014-10-07 15:22 ` Mark Rutland
2014-10-07 18:28 ` Geoff Levand
2014-10-07 18:28 ` Geoff Levand
2014-10-07 18:09 ` Vivek Goyal
2014-10-07 18:09 ` Vivek Goyal
2014-10-07 20:07 ` Geoff Levand
2014-10-07 20:07 ` Geoff Levand
2014-10-08 9:52 ` Leif Lindholm
2014-10-08 9:52 ` Leif Lindholm
2014-10-08 10:07 ` Mark Rutland
2014-10-08 10:07 ` Mark Rutland
2014-10-09 9:22 ` Will Deacon
2014-10-09 9:22 ` Will Deacon
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