From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Mike Rapoport <rppt@kernel.org>, linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org,
Darren Stevens <darren@stevens-zone.net>,
Robin Murphy <robin.murphy@arm.com>,
Mike Rapoport <rppt@linux.ibm.com>,
linux-mm@kvack.org, iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
Paul Mackerras <paulus@samba.org>,
mad skateman <madskateman@gmail.com>,
Christian Zigotzky <chzigotzky@xenosoft.de>,
linuxppc-dev@lists.ozlabs.org, Christoph Hellwig <hch@lst.de>,
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: Re: [PATCH] powerpc: ensure that swiotlb buffer is allocated from low memory
Date: Wed, 18 Dec 2019 15:05:09 +1100 (AEDT) [thread overview]
Message-ID: <47d1cj4B0Fz9sRc@ozlabs.org> (raw)
In-Reply-To: <20191204123524.22919-1-rppt@kernel.org>
On Wed, 2019-12-04 at 12:35:24 UTC, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
>
> Some powerpc platforms (e.g. 85xx) limit DMA-able memory way below 4G. If a
> system has more physical memory than this limit, the swiotlb buffer is not
> addressable because it is allocated from memblock using top-down mode.
>
> Force memblock to bottom-up mode before calling swiotlb_init() to ensure
> that the swiotlb buffer is DMA-able.
>
> Link: https://lkml.kernel.org/r/F1EBB706-73DF-430E-9020-C214EC8ED5DA@xenosoft.de
> Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/8fabc623238e68b3ac63c0dd1657bf86c1fa33af
cheers
WARNING: multiple messages have this Message-ID (diff)
From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Mike Rapoport <rppt@kernel.org>, linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org,
Darren Stevens <darren@stevens-zone.net>,
linuxppc-dev@lists.ozlabs.org, Mike Rapoport <rppt@linux.ibm.com>,
linux-mm@kvack.org, iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
Paul Mackerras <paulus@samba.org>,
mad skateman <madskateman@gmail.com>,
Christian Zigotzky <chzigotzky@xenosoft.de>,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: Re: [PATCH] powerpc: ensure that swiotlb buffer is allocated from low memory
Date: Wed, 18 Dec 2019 15:05:09 +1100 (AEDT) [thread overview]
Message-ID: <47d1cj4B0Fz9sRc@ozlabs.org> (raw)
In-Reply-To: <20191204123524.22919-1-rppt@kernel.org>
On Wed, 2019-12-04 at 12:35:24 UTC, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
>
> Some powerpc platforms (e.g. 85xx) limit DMA-able memory way below 4G. If a
> system has more physical memory than this limit, the swiotlb buffer is not
> addressable because it is allocated from memblock using top-down mode.
>
> Force memblock to bottom-up mode before calling swiotlb_init() to ensure
> that the swiotlb buffer is DMA-able.
>
> Link: https://lkml.kernel.org/r/F1EBB706-73DF-430E-9020-C214EC8ED5DA@xenosoft.de
> Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/8fabc623238e68b3ac63c0dd1657bf86c1fa33af
cheers
WARNING: multiple messages have this Message-ID (diff)
From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Mike Rapoport <rppt@kernel.org>, linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org,
Darren Stevens <darren@stevens-zone.net>,
linuxppc-dev@lists.ozlabs.org, Mike Rapoport <rppt@linux.ibm.com>,
linux-mm@kvack.org, iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
Paul Mackerras <paulus@samba.org>,
mad skateman <madskateman@gmail.com>,
Christian Zigotzky <chzigotzky@xenosoft.de>,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: Re: [PATCH] powerpc: ensure that swiotlb buffer is allocated from low memory
Date: Wed, 18 Dec 2019 15:05:09 +1100 (AEDT) [thread overview]
Message-ID: <47d1cj4B0Fz9sRc@ozlabs.org> (raw)
In-Reply-To: <20191204123524.22919-1-rppt@kernel.org>
On Wed, 2019-12-04 at 12:35:24 UTC, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
>
> Some powerpc platforms (e.g. 85xx) limit DMA-able memory way below 4G. If a
> system has more physical memory than this limit, the swiotlb buffer is not
> addressable because it is allocated from memblock using top-down mode.
>
> Force memblock to bottom-up mode before calling swiotlb_init() to ensure
> that the swiotlb buffer is DMA-able.
>
> Link: https://lkml.kernel.org/r/F1EBB706-73DF-430E-9020-C214EC8ED5DA@xenosoft.de
> Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/8fabc623238e68b3ac63c0dd1657bf86c1fa33af
cheers
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2019-12-18 4:05 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-04 12:35 [PATCH] powerpc: ensure that swiotlb buffer is allocated from low memory Mike Rapoport
2019-12-04 12:35 ` Mike Rapoport
2019-12-04 12:35 ` Mike Rapoport
2019-12-04 13:56 ` Christoph Hellwig
2019-12-04 13:56 ` Christoph Hellwig
2019-12-04 13:56 ` Christoph Hellwig
2019-12-04 13:56 ` Christoph Hellwig
2019-12-09 5:43 ` Michael Ellerman
2019-12-09 5:43 ` Michael Ellerman
2019-12-09 5:43 ` Michael Ellerman
2019-12-09 7:54 ` Mike Rapoport
2019-12-09 7:54 ` Mike Rapoport
2019-12-09 7:54 ` Mike Rapoport
2019-12-18 4:05 ` Michael Ellerman [this message]
2019-12-18 4:05 ` Michael Ellerman
2019-12-18 4:05 ` Michael Ellerman
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=47d1cj4B0Fz9sRc@ozlabs.org \
--to=patch-notifications@ellerman.id.au \
--cc=chzigotzky@xenosoft.de \
--cc=darren@stevens-zone.net \
--cc=hch@lst.de \
--cc=iommu@lists.linux-foundation.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=madskateman@gmail.com \
--cc=nsaenzjulienne@suse.de \
--cc=paulus@samba.org \
--cc=robh+dt@kernel.org \
--cc=robin.murphy@arm.com \
--cc=rppt@kernel.org \
--cc=rppt@linux.ibm.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.