Re: [RFC] [Patch] calgary iommu: Use the first kernel's tce tablesin kdump

From: Andrew Morton
Date: Mon Mar 10 2008 - 12:11:23 EST


On Mon, 10 Mar 2008 18:50:29 +0530 Chandru <chandru@xxxxxxxxxx> wrote:

> Chandru wrote:
> > Hi Muli,
> >
> > I have tried to work with CCR ,CSR, CSMR, CSAR, CFGRW, GBRERRM
> > registers but have been unable to make calgary generate an exception
> > upon error condition. In alloc_tce_table() , I am setting WRITE_ONLY
> > access permission bit to tce entries but it isn't helping. Would you
> > kindly let me know how we can make calgary to generate an exception in
> > error conditions ?.
> >
> > Thanks,
> > Chandru
> >
> >
> Hello Andrew,
>
> Could you pls consider the attached patch for inclusion in mainline.
>

I can sort-of work out what the patch does from the above quote, but it
would be nice to have a proper changelog description from yourself rather
than having me try to write it, please.

>
> Signed-off-by: Chandru S <chandru@xxxxxxxxxx>
> ---
>
> --- arch/x86/kernel/pci-calgary_64.c.orig 2008-03-10
> 15:54:08.000000000 +0530

The patch was badly wordwrapped. Please fix your email client for the next
version.

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