Re: "iommu/vt-d: Delegate DMA domain to generic iommu" series breaks megaraid_sas

[Lu Baolu]

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Ah, good catch!

The device failed to be attached by a DMA domain. Can you please try the
attached fix patch?

[  101.885468] pci 0000:06:00.0: DMAR: Device is ineligible for IOMMU
domain attach due to platform RMRR requirement.  Contact your platform
vendor.
[  101.900801] pci 0000:06:00.0: Failed to add to iommu group 23: -1

Best regards,
Baolu

On 6/10/19 10:54 PM, Qian Cai wrote:
> On Mon, 2019-06-10 at 09:44 -0400, Qian Cai wrote:
> > On Sun, 2019-06-09 at 10:43 +0800, Lu Baolu wrote:
> > > Hi Qian,
> > >
> > > I just posted some fix patches. I cc'ed them in your email inbox as
> > > well. Can you please check whether they happen to fix your issue?
> > > If not, do you mind posting more debug messages?
> >
> > Unfortunately, it does not work. Here is the dmesg.
> >
> > https://raw.githubusercontent.com/cailca/tmp/master/dmesg?token=AMC35QKPIZBYUM
> > FUQKLW4ZC47ZPIK
>
> This one should be good to view.
>
> https://cailca.github.io/files/dmesg.txt