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From: Scott Wood <scottwood@freescale.com>
To: Simon Horman <horms@verge.net.au>
Cc: linuxppc-dev@lists.ozlabs.org, kexec@lists.infradead.org
Subject: Re: [PATCH 2/2] ppc64: Add a flag to tell the kernel it's booting from kexec
Date: Mon, 17 Aug 2015 13:59:47 -0500	[thread overview]
Message-ID: <1439837987.15601.29.camel@freescale.com> (raw)
In-Reply-To: <1437249439-31496-2-git-send-email-scottwood@freescale.com>

On Sat, 2015-07-18 at 14:57 -0500, Scott Wood wrote:
> It needs to know this because the SMP release mechanism for Freescale
> book3e is different from when booting with normal hardware.  In theory
> we could simulate the normal spin table mechanism, but not (easily) at
> the addresses U-Boot put in the device tree -- so there'd need to be
> even more communication between the kernel and kexec to set that up.
> Since there's already a similar flag being set (for kdump only), this
> seemed like a reasonable approach.
> 
> Signed-off-by: Scott Wood <scottwood@freescale.com>
> ---
>  kexec/arch/ppc64/kexec-elf-ppc64.c | 11 ++++++++++-
>  kexec/arch/ppc64/kexec-ppc64.h     |  2 ++
>  purgatory/arch/ppc64/v2wrap.S      | 11 +++++++++++
>  3 files changed, 23 insertions(+), 1 deletion(-)

Any comment on these two patches?

-Scott


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WARNING: multiple messages have this Message-ID (diff)
From: Scott Wood <scottwood@freescale.com>
To: Simon Horman <horms@verge.net.au>
Cc: <kexec@lists.infradead.org>, <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 2/2] ppc64: Add a flag to tell the kernel it's booting from kexec
Date: Mon, 17 Aug 2015 13:59:47 -0500	[thread overview]
Message-ID: <1439837987.15601.29.camel@freescale.com> (raw)
In-Reply-To: <1437249439-31496-2-git-send-email-scottwood@freescale.com>

On Sat, 2015-07-18 at 14:57 -0500, Scott Wood wrote:
> It needs to know this because the SMP release mechanism for Freescale
> book3e is different from when booting with normal hardware.  In theory
> we could simulate the normal spin table mechanism, but not (easily) at
> the addresses U-Boot put in the device tree -- so there'd need to be
> even more communication between the kernel and kexec to set that up.
> Since there's already a similar flag being set (for kdump only), this
> seemed like a reasonable approach.
> 
> Signed-off-by: Scott Wood <scottwood@freescale.com>
> ---
>  kexec/arch/ppc64/kexec-elf-ppc64.c | 11 ++++++++++-
>  kexec/arch/ppc64/kexec-ppc64.h     |  2 ++
>  purgatory/arch/ppc64/v2wrap.S      | 11 +++++++++++
>  3 files changed, 23 insertions(+), 1 deletion(-)

Any comment on these two patches?

-Scott

  reply	other threads:[~2015-08-17 19:00 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-18 19:57 [PATCH 1/2] ppc64: Fix warnings Scott Wood
2015-07-18 19:57 ` Scott Wood
2015-07-18 19:57 ` [PATCH 2/2] ppc64: Add a flag to tell the kernel it's booting from kexec Scott Wood
2015-07-18 19:57   ` Scott Wood
2015-08-17 18:59   ` Scott Wood [this message]
2015-08-17 18:59     ` Scott Wood
2015-08-18  2:51     ` Michael Ellerman
2015-08-18  2:51       ` Michael Ellerman
2015-08-18  3:30       ` Scott Wood
2015-08-18  3:30         ` Scott Wood
2015-08-18  3:53         ` Michael Ellerman
2015-08-18  3:53           ` Michael Ellerman

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