From: Christoph Hellwig <hch@lst.de>
To: Dominique MARTINET <dominique.martinet@atmark-techno.com>
Cc: "Konrad Rzeszutek Wilk" <konrad@darnok.org>,
"Jianxiong Gao" <jxgao@google.com>,
"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
"Christoph Hellwig" <hch@lst.de>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Horia Geantă" <horia.geanta@nxp.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Lukas Hartmann" <lukas@mntmn.com>,
"Aymen Sghaier" <aymen.sghaier@nxp.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"Marc Orr" <marcorr@google.com>,
"Erdem Aktas" <erdemaktas@google.com>,
"Peter Gonda" <pgonda@google.com>
Subject: Re: swiotlb/caamjr regression (Was: [GIT PULL] (swiotlb) stable/for-linus-5.12)
Date: Thu, 17 Jun 2021 07:12:32 +0200 [thread overview]
Message-ID: <20210617051232.GB27192@lst.de> (raw)
In-Reply-To: <YMqZswFnSNKk4Z7B@atmark-techno.com>
On Thu, Jun 17, 2021 at 09:39:15AM +0900, Dominique MARTINET wrote:
> Konrad Rzeszutek Wilk wrote on Wed, Jun 16, 2021 at 08:27:39PM -0400:
> > Thank you for testing that - and this is a bummer indeed.
>
> Hm, actually not that surprising if it was working without the offset
> adjustments and doing non-aligned mappings -- perhaps the nvme code just
> needs to round the offsets down instead of expecting swiotlb to do it?
It can't. The whole point of the series was to keep the original offsets.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Dominique MARTINET <dominique.martinet@atmark-techno.com>
Cc: "Aymen Sghaier" <aymen.sghaier@nxp.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"Horia Geantă" <horia.geanta@nxp.com>,
"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
"Marc Orr" <marcorr@google.com>,
"Lukas Hartmann" <lukas@mntmn.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
"Peter Gonda" <pgonda@google.com>,
"Konrad Rzeszutek Wilk" <konrad@darnok.org>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Christoph Hellwig" <hch@lst.de>,
"Jianxiong Gao" <jxgao@google.com>
Subject: Re: swiotlb/caamjr regression (Was: [GIT PULL] (swiotlb) stable/for-linus-5.12)
Date: Thu, 17 Jun 2021 07:12:32 +0200 [thread overview]
Message-ID: <20210617051232.GB27192@lst.de> (raw)
In-Reply-To: <YMqZswFnSNKk4Z7B@atmark-techno.com>
On Thu, Jun 17, 2021 at 09:39:15AM +0900, Dominique MARTINET wrote:
> Konrad Rzeszutek Wilk wrote on Wed, Jun 16, 2021 at 08:27:39PM -0400:
> > Thank you for testing that - and this is a bummer indeed.
>
> Hm, actually not that surprising if it was working without the offset
> adjustments and doing non-aligned mappings -- perhaps the nvme code just
> needs to round the offsets down instead of expecting swiotlb to do it?
It can't. The whole point of the series was to keep the original offsets.
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next prev parent reply other threads:[~2021-06-17 5:12 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 16:00 [GIT PULL] (swiotlb) stable/for-linus-5.12 Konrad Rzeszutek Wilk
2021-02-26 22:24 ` pr-tracker-bot
2021-06-08 2:35 ` swiotlb/caamjr regression (Was: [GIT PULL] (swiotlb) stable/for-linus-5.12) Dominique MARTINET
2021-06-10 14:52 ` Horia Geantă
2021-06-10 14:52 ` Horia Geantă
2021-06-10 19:41 ` Linus Torvalds
2021-06-10 19:41 ` Linus Torvalds
2021-06-10 23:20 ` Horia Geantă
2021-06-10 23:20 ` Horia Geantă
2021-06-11 6:21 ` Christoph Hellwig
2021-06-11 6:21 ` Christoph Hellwig
2021-06-11 10:34 ` Konrad Rzeszutek Wilk
2021-06-11 10:34 ` Konrad Rzeszutek Wilk
2021-06-11 10:59 ` Horia Geantă
2021-06-11 10:59 ` Horia Geantă
2021-06-11 16:21 ` Linus Torvalds
2021-06-11 16:21 ` Linus Torvalds
2021-06-16 20:49 ` Jianxiong Gao
2021-06-16 20:49 ` Jianxiong Gao via iommu
2021-06-17 0:27 ` Konrad Rzeszutek Wilk
2021-06-17 0:27 ` Konrad Rzeszutek Wilk
2021-06-17 0:39 ` Dominique MARTINET
2021-06-17 0:39 ` Dominique MARTINET
2021-06-17 5:12 ` Christoph Hellwig [this message]
2021-06-17 5:12 ` Christoph Hellwig
2021-06-17 5:36 ` Dominique MARTINET
2021-06-17 5:36 ` Dominique MARTINET
2021-06-18 18:01 ` Jianxiong Gao via iommu
2021-06-18 18:01 ` Jianxiong Gao
2021-06-21 2:03 ` Dominique MARTINET
2021-06-21 2:03 ` Dominique MARTINET
2021-06-21 2:55 ` Chanho Park
2021-06-21 2:55 ` Chanho Park
2021-06-21 4:14 ` 'Dominique MARTINET'
2021-06-21 4:14 ` 'Dominique MARTINET'
2021-06-21 13:16 ` Konrad Rzeszutek Wilk
2021-06-21 13:16 ` Konrad Rzeszutek Wilk
2021-06-22 7:48 ` 'Dominique MARTINET'
2021-06-22 7:48 ` 'Dominique MARTINET'
2021-06-22 21:58 ` Konrad Rzeszutek Wilk
2021-06-22 21:58 ` Konrad Rzeszutek Wilk
2021-06-22 23:04 ` 'Dominique MARTINET'
2021-06-22 23:04 ` 'Dominique MARTINET'
2021-06-17 11:33 ` Christoph Hellwig
2021-06-17 11:33 ` Christoph Hellwig
2021-06-11 16:01 ` Linus Torvalds
2021-06-11 16:01 ` Linus Torvalds
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