Re: [PATCH] Prevent reserving RAM in the region already reserved by BIOS

From: Mathieu Rondonneau
Date: Sat May 22 2010 - 00:59:06 EST

On Fri, May 21, 2010 at 8:15 AM, Mathieu Rondonneau
<mathieu.rondonneau@xxxxxxxxx> wrote:
> On Thu, May 20, 2010 at 5:12 AM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:
>> On Wed, 19 May 2010 17:01:41 -0700
>> Mathieu Rondonneau <mathieu.rondonneau@xxxxxxxxx> wrote:
>>> it' s not in ISA space.
>>> once loading the NVIDIA driver, the warnign oops shows up.
>>> 4K starting at 0x9f800 (i.e. to 0xa007ff) overlap with the ISA space
>>> (starting at 0xa0000).
>> If this is the proprietary Nvidia driver you need to take the matter up
>> with Nvidia. I assume they are trying to remap chunks of the EBA for some
>> reason.
>> And please can you not top post to this list, it makes it very hard to
>> follow when you are replying in a different order to everyone else.
>> Alan
> Thanks Alan, I will post on NVIDIA forum. Thanks for the feedback.
> Yinghai, your patch had some missing parameter for the sanitize function.
> It does fixes the bios side (/proc/iomem) that now shows only aligned sections.
> But it does not prevent the Nvidia driver to try to allocate on non-4K
> align (i.e. if this is what' s happening).
> Thanks for the help,
> -Mathieu

Found on Nvidia forum that they are aware of the problem. They said
that this will be fixed in the next driver version.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at