[PATCH v2 14/16] x86, nvdimm, kexec: Use walk_iomem_res_desc() for iomem search

Dave Young dyoung at redhat.com
Mon Jan 4 21:20:03 PST 2016


On 01/04/16 at 01:26pm, Borislav Petkov wrote:
> On Mon, Jan 04, 2016 at 05:29:37PM +0800, Dave Young wrote:
> > Replied to Toshi old kernel will export the "GART" region for amd cards.
> > So for old kernel and new kexec-tools we will have problem.
> > 
> > I think add the GART desc for compitibility purpose is doable, no?
> 
> Just read your other mails too. If I see it correctly, there's only one
> place which has "GART":
> 
> $ git grep -e \"GART\"
> arch/x86/kernel/crash.c:235:    walk_iomem_res("GART", IORESOURCE_MEM, 0, -1,
> 
> So crash.c only excludes this region but the kernel doesn't create it.
> Right?

Right.

> 
> So we can kill that walk_iomem_res(), as you say. Which would be even
> nicer...

Yes, I think it is ok to kill walk_iomem_res()

Thanks
Dave



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