From: Joerg Roedel <jroedel@suse.de>
To: Qian Cai <cai@lca.pw>
Cc: iommu@lists.linux-foundation.org,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>, Tom Murphy <murphyt7@tcd.ie>,
linux-kernel@vger.kernel.org
Subject: Re: "Convert the AMD iommu driver to the dma-iommu api" is buggy
Date: Wed, 16 Oct 2019 17:44:55 +0200 [thread overview]
Message-ID: <20191016154455.GG4695@suse.de> (raw)
In-Reply-To: <1571237982.5937.60.camel@lca.pw>
On Wed, Oct 16, 2019 at 10:59:42AM -0400, Qian Cai wrote:
> BTW, the previous x86 warning was from only reverted one patch "iommu: Add gfp
> parameter to iommu_ops::map" where proved to be insufficient. Now, pasting the
> correct warning.
Can you please test this small fix:
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 78a2cca3ac5c..e7a4464e8594 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2562,7 +2562,7 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova,
if (iommu_prot & IOMMU_WRITE)
prot |= IOMMU_PROT_IW;
- ret = iommu_map_page(domain, iova, paddr, page_size, prot, GFP_KERNEL);
+ ret = iommu_map_page(domain, iova, paddr, page_size, prot, gfp);
domain_flush_np_cache(domain, iova, page_size);
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <jroedel@suse.de>
To: Qian Cai <cai@lca.pw>
Cc: Tom Murphy <murphyt7@tcd.ie>, Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: "Convert the AMD iommu driver to the dma-iommu api" is buggy
Date: Wed, 16 Oct 2019 17:44:55 +0200 [thread overview]
Message-ID: <20191016154455.GG4695@suse.de> (raw)
In-Reply-To: <1571237982.5937.60.camel@lca.pw>
On Wed, Oct 16, 2019 at 10:59:42AM -0400, Qian Cai wrote:
> BTW, the previous x86 warning was from only reverted one patch "iommu: Add gfp
> parameter to iommu_ops::map" where proved to be insufficient. Now, pasting the
> correct warning.
Can you please test this small fix:
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 78a2cca3ac5c..e7a4464e8594 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2562,7 +2562,7 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova,
if (iommu_prot & IOMMU_WRITE)
prot |= IOMMU_PROT_IW;
- ret = iommu_map_page(domain, iova, paddr, page_size, prot, GFP_KERNEL);
+ ret = iommu_map_page(domain, iova, paddr, page_size, prot, gfp);
domain_flush_np_cache(domain, iova, page_size);
next prev parent reply other threads:[~2019-10-16 15:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-16 14:55 "Convert the AMD iommu driver to the dma-iommu api" is buggy Qian Cai
2019-10-16 14:55 ` Qian Cai
2019-10-16 14:59 ` Qian Cai
2019-10-16 14:59 ` Qian Cai
2019-10-16 15:31 ` Joerg Roedel
2019-10-16 15:31 ` Joerg Roedel
2019-10-16 15:53 ` Qian Cai
2019-10-16 15:53 ` Qian Cai
2019-10-16 16:03 ` Joerg Roedel
2019-10-16 16:03 ` Joerg Roedel
2019-10-16 16:09 ` Robin Murphy
2019-10-16 16:09 ` Robin Murphy
2019-10-16 16:36 ` Julien Grall
2019-10-16 16:36 ` Julien Grall
2019-10-16 16:11 ` Qian Cai
2019-10-16 16:11 ` Qian Cai
2019-10-16 16:26 ` Robin Murphy
2019-10-16 16:26 ` Robin Murphy
2019-10-16 15:44 ` Joerg Roedel [this message]
2019-10-16 15:44 ` Joerg Roedel
2019-10-17 14:39 ` Qian Cai
2019-10-17 14:39 ` Qian Cai
2019-10-18 9:39 ` Joerg Roedel
2019-10-18 9:39 ` Joerg Roedel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191016154455.GG4695@suse.de \
--to=jroedel@suse.de \
--cc=cai@lca.pw \
--cc=hch@lst.de \
--cc=iommu@lists.linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=murphyt7@tcd.ie \
--cc=robin.murphy@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.