From: Milton Miller <miltonm@bga.com>
To: Dave Carroll <dcarroll@astekcorp.com>
Cc: Paul Mackerras <paulus@samba.org>,
LPPC <linuxppc-dev@lists.ozlabs.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: RE: [ v4] powerpc: Force page alignment for initrd reserved memory
Date: Mon, 23 May 2011 12:39:06 -0500 [thread overview]
Message-ID: <initrd-align-withdrawn@mdm.bga.com> (raw)
In-Reply-To: <522F24EF533FC546962ECFA2054FF777373072AB78@MAILSERVER2.cos.astekcorp.com>
On Mon, 23 May 2011 about 10:50:07 -0600, Dave Carroll wrote:
> I'm withdrawing this patch for the moment, due to two areas that need
> further research;
>
> 1) An adjacent FDT blob, as mentioned by Milton Miller, and
>
Ok ... by the way, see move_device_tree() in arch/powerpc/kernel/prom.c
> 2) Potential interaction with the crash kernel, as used in
> init/initramfs.c
which already goes around the start and end of crashk_res, which
is adjusted to PAGE_ALIGN in reserve_crashkernel() in machine_kexec.c
> If anyone sees other interactions, please feel free to let me know ...
>
> Thanks,
> -Dave Carroll
One interaction that I have ignored is preserve_initrd overlapping
crash kernel. Loading the crash kernel destroys the preserved initrd.
But that is beyond the scope of your current patch (and probably a
seperate patch, with cross-architecture scope).
milton
WARNING: multiple messages have this Message-ID (diff)
From: Milton Miller <miltonm@bga.com>
To: Dave Carroll <dcarroll@astekcorp.com>
Cc: LPPC <linuxppc-dev@lists.ozlabs.org>,
Paul Mackerras <paulus@samba.org>,
LKML <linux-kernel@vger.kernel.org>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>
Subject: RE: [ v4] powerpc: Force page alignment for initrd reserved memory
Date: Mon, 23 May 2011 12:39:06 -0500 [thread overview]
Message-ID: <initrd-align-withdrawn@mdm.bga.com> (raw)
In-Reply-To: <522F24EF533FC546962ECFA2054FF777373072AB78@MAILSERVER2.cos.astekcorp.com>
On Mon, 23 May 2011 about 10:50:07 -0600, Dave Carroll wrote:
> I'm withdrawing this patch for the moment, due to two areas that need
> further research;
>
> 1) An adjacent FDT blob, as mentioned by Milton Miller, and
>
Ok ... by the way, see move_device_tree() in arch/powerpc/kernel/prom.c
> 2) Potential interaction with the crash kernel, as used in
> init/initramfs.c
which already goes around the start and end of crashk_res, which
is adjusted to PAGE_ALIGN in reserve_crashkernel() in machine_kexec.c
> If anyone sees other interactions, please feel free to let me know ...
>
> Thanks,
> -Dave Carroll
One interaction that I have ignored is preserve_initrd overlapping
crash kernel. Loading the crash kernel destroys the preserved initrd.
But that is beyond the scope of your current patch (and probably a
seperate patch, with cross-architecture scope).
milton
next prev parent reply other threads:[~2011-05-23 17:39 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 21:26 [PATCH]powerpc: Force page alignment for early reserved memory Dave Carroll
2011-05-20 21:26 ` Dave Carroll
2011-05-20 22:27 ` Benjamin Herrenschmidt
2011-05-20 22:27 ` Benjamin Herrenschmidt
2011-05-20 23:23 ` [PATCH v2]powerpc: Force page alignment for initrd Dave Carroll
2011-05-20 23:23 ` Dave Carroll
2011-05-21 10:36 ` [v2] powerpc: " Milton Miller
2011-05-21 10:36 ` Milton Miller
2011-05-21 17:05 ` [PATCH v3] powerpc: Force page alignment for initrd reserved memory Dave Carroll
2011-05-21 17:05 ` Dave Carroll
2011-05-22 21:17 ` [PATCH v3] powerpc: Force page alignment for initrd reserved memory, " 'Milton Miller'
2011-05-22 21:17 ` 'Milton Miller'
2011-05-23 1:29 ` Dave Carroll
2011-05-23 1:29 ` Dave Carroll
2011-05-23 2:31 ` [PATCH v4] " Dave Carroll
2011-05-23 2:31 ` Dave Carroll
2011-05-23 16:50 ` [ " Dave Carroll
2011-05-23 16:50 ` Dave Carroll
2011-05-23 17:39 ` Milton Miller [this message]
2011-05-23 17:39 ` Milton Miller
2011-05-23 22:54 ` [PATCH v5] " Dave Carroll
2011-05-23 22:54 ` Dave Carroll
2011-05-25 9:28 ` [v5] " Milton Miller
2011-05-25 9:28 ` Milton Miller
2011-05-26 2:00 ` [PATCH v6] " Dave Carroll
2011-05-26 2:00 ` Dave Carroll
2011-05-26 2:32 ` [PATCH v7] " Dave Carroll
2011-05-26 2:32 ` Dave Carroll
2011-05-26 11:18 ` Milton Miller
2011-05-26 11:18 ` Milton Miller
2011-05-26 16:53 ` [PATCH v8] " Dave Carroll
2011-05-26 16:53 ` Dave Carroll
2011-06-11 1:38 ` [PATCH 1/2] powerpc: Move free_initmem to common code Dave Carroll
2011-06-11 1:38 ` Dave Carroll
2011-06-11 1:38 ` [PATCH 2/2] powerpc: Add printk companion for ppc_md.progress Dave Carroll
2011-06-11 1:38 ` Dave Carroll
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