From: David Miller <davem@davemloft.net>
To: tushar.n.dave@oracle.com
Cc: chris.hyser@oracle.com, sowmini.varadhan@oracle.com,
egtvedt@samfundet.no, dan.carpenter@oracle.com, krzk@kernel.org,
bart.vanassche@sandisk.com, sparclinux@vger.kernel.org,
linux-kernel@vger.kernel.org, hch@lst.de, mroos@linux.ee
Subject: Re: [sparc-next] SPARC64: Fix sun4v DMA panic
Date: Wed, 12 Jul 2017 08:13:20 -0700 (PDT) [thread overview]
Message-ID: <20170712.081320.21515285122907934.davem@davemloft.net> (raw)
In-Reply-To: <1499808887-31483-1-git-send-email-tushar.n.dave@oracle.com>
From: Tushar Dave <tushar.n.dave@oracle.com>
Date: Tue, 11 Jul 2017 14:34:47 -0700
> 64bit DMA only supported on sun4v equipped with ATU IOMMU HW.
> 'Commit b02c2b0bfd7ae ("sparc: remove arch specific dma_supported
> implementations")' introduced a code that incorrectly allow
> dma_supported() to succeed for 64bit dma mask even if system doesn't
> have ATU IOMMU. This results into panic.
>
> Fix it.
>
> Reported-by: Meelis Roos <mroos@linux.ee>
> Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Applied to the 'sparc' tree, thanks.
prev parent reply other threads:[~2017-07-12 15:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-11 21:34 Tushar Dave
2017-07-12 7:21 ` Christoph Hellwig
2017-07-12 15:13 ` David Miller [this message]
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