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Date: Sat, 16 Jul 2011 17:28:06 +0100
From: Matthew Garrett <mjg@redhat.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Seiji Aguchi <seiji.aguchi@hds.com>,
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Subject: Re: [RFC][PATCH] Replace a function call chain of
 kmsg_dump(KMSG_DUMP_KEXEC) with static function calls
Message-ID: <20110716162805.GA13127@srcf.ucam.org>
References: <5C4C569E8A4B9B42A84A977CF070A35B2C17AAE59A@USINDEVS01.corp.hds.com>
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On Sat, Jul 16, 2011 at 09:16:06AM -0700, Eric W. Biederman wrote:

> What is going on with EFI support?  We are still making efi calls in
> virtual mode, and we don't have the one unified identity mapped physical
> page table that hpa and I think others were working a while back.  Even
> if because of bugs we need to transition EFI to virtual mode we can
> still set physical to virtual so we don't have to deal with the nonsense.

No, we can't. It doesn't work.

> Can we please make our EFI support ask the minimal from EFI before
> adding lots more to it?

No.

> Am I wrong in thinking that the core motivation behind this patch is
> that our EFI support sucks and thus kdump on EFI does not work on some
> platforms?

Yes, you are.

-- 
Matthew Garrett | mjg59@srcf.ucam.org

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Date: Sat, 16 Jul 2011 17:28:06 +0100
From: Matthew Garrett <mjg@redhat.com>
Subject: Re: [RFC][PATCH] Replace a function call chain of
	kmsg_dump(KMSG_DUMP_KEXEC) with static function calls
Message-ID: <20110716162805.GA13127@srcf.ucam.org>
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To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "dle-develop@lists.sourceforge.net" <dle-develop@lists.sourceforge.net>, "tony.luck@intel.com" <tony.luck@intel.com>, "hpa@zytor.com" <hpa@zytor.com>, "kexec@lists.infradead.org" <kexec@lists.infradead.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Satoru Moriya <satoru.moriya@hds.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Jarod Wilson <jwilson@redhat.com>, Americo Wang <xiyou.wangcong@gmail.com>, Andrew Morton <akpm@linux-foundation.org>, Seiji Aguchi <seiji.aguchi@hds.com>, Vivek Goyal <vgoyal@redhat.com>

On Sat, Jul 16, 2011 at 09:16:06AM -0700, Eric W. Biederman wrote:

> What is going on with EFI support?  We are still making efi calls in
> virtual mode, and we don't have the one unified identity mapped physical
> page table that hpa and I think others were working a while back.  Even
> if because of bugs we need to transition EFI to virtual mode we can
> still set physical to virtual so we don't have to deal with the nonsense.

No, we can't. It doesn't work.

> Can we please make our EFI support ask the minimal from EFI before
> adding lots more to it?

No.

> Am I wrong in thinking that the core motivation behind this patch is
> that our EFI support sucks and thus kdump on EFI does not work on some
> platforms?

Yes, you are.

-- 
Matthew Garrett | mjg59@srcf.ucam.org

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