linux-kernel - Re: [PATCH v7 02/60] sparc/PCI: Use correct bus address to resource offset

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Message-ID: <5626A8C0.1010409@oracle.com>
Date:	Tue, 20 Oct 2015 14:49:04 -0600
From:	Khalid Aziz <khalid.aziz@...cle.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Bjorn Helgaas <helgaas@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>,
	Yijing Wang <wangyijing@...wei.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 02/60] sparc/PCI: Use correct bus address to resource
 offset

On 10/20/2015 02:34 PM, Yinghai Lu wrote:
> On Tue, Oct 20, 2015 at 1:07 PM, Khalid Aziz <khalid.aziz@...cle.com> wrote:
>>> I don't want to argue about pci_resource_to_user() right now, so I
>>> guess you can just panic if the mem64 offset is different from the
>>> mem32 offset.  But you should at least add a comment about why you're
>>> doing that.  Otherwise it looks like you were just lazy.
>
> I had one version for that, but it has big change to __pci_mmap_make_offset_bus
> for making pci_mmap_resource() working.
> And took it for granted that MEM/MEM64 should have same offet.
>
>>
>>
>> I just hit this condition on a sparc platform where mem32 offset != mem64
>> offset. We need to handle this case, and not just call panic. I had not seen
>> this on 5 platforms and another 3 ldoms I had tested this on when I tested
>> this code earlier. I have sent panic log to Yinghai separately.
>
> Did you get test result with updated patch2 and patch3?

I should have it by the end of day today.

--
Khalid

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