From: Dhaval Giani <dhaval@linux.vnet.ibm.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: kexec@lists.infradead.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
hbabu@us.ibm.com, Ingo Molnar <mingo@redhat.com>,
Thomas Gleixer <tglx@linutronix.de>,
vgoyal@redhat.com
Subject: Re: [PATCH] i386: handle an initrd in highmem (version 2)
Date: Tue, 8 Jan 2008 11:11:05 +0530 [thread overview]
Message-ID: <20080108054105.GC5393@linux.vnet.ibm.com> (raw)
In-Reply-To: <200801080502.m0852rhW017142@tazenda.hos.anvin.org>
On Mon, Jan 07, 2008 at 09:02:53PM -0800, H. Peter Anvin wrote:
> The boot protocol has until now required that the initrd be located in
> lowmem, which makes the lowmem/highmem boundary visible to the boot
> loader. This was exported to the bootloader via a compile-time
> field. Unfortunately, the vmalloc= command-line option breaks this
> part of the protocol; instead of adding yet another hack that affects
> the bootloader, have the kernel relocate the initrd down below the
> lowmem boundary inside the kernel itself.
>
> Note that this does not rely on HIGHMEM being enabled in the kernel.
>
> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
> ---
> Fix crash on NUMA reported by Dhaval Giani (reported as being a kexec issue.)
>
Yep, it does that. Just tested that on top of the x86 git tree (the mm
queue). It boots.
Tested-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
--
regards,
Dhaval
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WARNING: multiple messages have this Message-ID (diff)
From: Dhaval Giani <dhaval@linux.vnet.ibm.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Gleixer <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
vgoyal@redhat.com, hbabu@us.ibm.com, kexec@lists.infradead.org
Subject: Re: [PATCH] i386: handle an initrd in highmem (version 2)
Date: Tue, 8 Jan 2008 11:11:05 +0530 [thread overview]
Message-ID: <20080108054105.GC5393@linux.vnet.ibm.com> (raw)
In-Reply-To: <200801080502.m0852rhW017142@tazenda.hos.anvin.org>
On Mon, Jan 07, 2008 at 09:02:53PM -0800, H. Peter Anvin wrote:
> The boot protocol has until now required that the initrd be located in
> lowmem, which makes the lowmem/highmem boundary visible to the boot
> loader. This was exported to the bootloader via a compile-time
> field. Unfortunately, the vmalloc= command-line option breaks this
> part of the protocol; instead of adding yet another hack that affects
> the bootloader, have the kernel relocate the initrd down below the
> lowmem boundary inside the kernel itself.
>
> Note that this does not rely on HIGHMEM being enabled in the kernel.
>
> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
> ---
> Fix crash on NUMA reported by Dhaval Giani (reported as being a kexec issue.)
>
Yep, it does that. Just tested that on top of the x86 git tree (the mm
queue). It boots.
Tested-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
--
regards,
Dhaval
next prev parent reply other threads:[~2008-01-08 5:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-08 5:02 [PATCH] i386: handle an initrd in highmem (version 2) H. Peter Anvin
2008-01-08 5:02 ` H. Peter Anvin
2008-01-08 5:41 ` Dhaval Giani [this message]
2008-01-08 5:41 ` Dhaval Giani
2008-01-08 8:28 ` Ingo Molnar
2008-01-08 8:28 ` Ingo Molnar
2008-01-08 8:30 ` Ingo Molnar
2008-01-08 8:30 ` Ingo Molnar
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