From: Joerg Roedel <joro@8bytes.org>
To: Jiri Kosina <jikos@kernel.org>
Cc: Kurt Garloff <kurt@garloff.de>,
LKML <linux-kernel@vger.kernel.org>,
Shah Nehal-Bakulchandra <Nehal-bakulchandra.Shah@amd.com>
Subject: Re: IOMMU vs Ryzen embedded EMMC controller
Date: Wed, 25 Sep 2019 17:42:56 +0200 [thread overview]
Message-ID: <20190925154256.GB4643@8bytes.org> (raw)
In-Reply-To: <nycvar.YEU.7.76.1909251726550.15418@gjva.wvxbf.pm>
On Wed, Sep 25, 2019 at 05:27:32PM +0200, Jiri Kosina wrote:
> On Sat, 21 Sep 2019, Kurt Garloff wrote:
> > [12916.740274] mmc0: sdhci: ============================================
> > [12916.740337] mmc0: error -5 whilst initialising MMC card
>
> Do you have BAR memory allocation failures in dmesg with IOMMU on?
> Actually, sharing both working and non-working dmesg, as well as
> /proc/iomem contents, would be helpful.
Yes, can you please grab dmesg from a boot with iommu enabled and add
'amd_iommu_dump' to the kernel command line? That should give some hints
on what is going on.
Regards,
Joerg
next prev parent reply other threads:[~2019-09-25 15:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <643f99a4-4613-50af-57e4-5ea6ac975314@garloff.de>
2019-09-21 6:58 ` IOMMU vs Ryzen embedded EMMC controller Kurt Garloff
2019-09-25 15:27 ` Jiri Kosina
2019-09-25 15:42 ` Joerg Roedel [this message]
2019-09-27 9:47 ` Kurt Garloff
2019-09-27 10:30 ` Shah, Nehal-bakulchandra
2019-10-09 19:25 ` Jiri Kosina
2019-10-09 19:36 ` Suthikulpanit, Suravee
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