From: Christoph Hellwig <hch@lst•de>
To: Stefano Stabellini <sstabellini@kernel•org>
Cc: thomas.hellstrom@linux•intel.com,
heikki.krogerus@linux•intel.com,
linux-devicetree <devicetree@vger•kernel.org>,
peterz@infradead•org, joonas.lahtinen@linux•intel.com,
dri-devel@lists•freedesktop.org, chris@chris-wilson•co.uk,
grant.likely@arm•com, paulus@samba•org,
Frank Rowand <frowand.list@gmail•com>,
mingo@kernel•org, Marek Szyprowski <m.szyprowski@samsung•com>,
Nicolas Boichat <drinkcat@chromium•org>,
Saravana Kannan <saravanak@google•com>,
Joerg Roedel <joro@8bytes•org>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel•com>,
Christoph Hellwig <hch@lst•de>,
Bartosz Golaszewski <bgolaszewski@baylibre•com>,
bskeggs@redhat•com, linux-pci@vger•kernel.org,
xen-devel@lists•xenproject.org,
Thierry Reding <treding@nvidia•com>,
intel-gfx@lists•freedesktop.org, matthew.auld@intel•com,
Tom Lendacky <thomas.lendacky@amd•com>,
Jianxiong Gao <jxgao@google•com>, Daniel Vetter <daniel@ffwll•ch>,
Will Deacon <will@kernel•org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle•com>,
maarten.lankhorst@linux•intel.com, airlied@linux•ie,
Dan Williams <dan.j.williams@intel•com>,
linuxppc-dev@lists•ozlabs.org, jani.nikula@linux•intel.com,
Rob Herring <robh+dt@kernel•org>,
rodrigo.vivi@intel•com, Bjorn Helgaas <bhelgaas@google•com>,
Claire Chang <tientzu@chromium•org>,
boris.ostrovsky@oracle•com,
Andy Shevchenko <andriy.shevchenko@linux•intel.com>,
jgross@suse•com, Greg KH <gregkh@linuxfoundation•org>,
Randy Dunlap <rdunlap@infradead•org>,
lkml <linux-kernel@vger•kernel.org>,
Tomasz Figa <tfiga@chromium•org>,
"list@263•net:IOMMU DRIVERS" <iommu@lists•linux-foundation.org>,
Jim Quinlan <james.quinlan@broadcom•com>,
xypron.glpk@gmx•de, Robin Murphy <robin.murphy@arm•com>,
bauerman@linux•ibm.com
Subject: Re: [PATCH v13 01/12] swiotlb: Refactor swiotlb init functions
Date: Mon, 21 Jun 2021 22:19:46 +0200 [thread overview]
Message-ID: <20210621201946.GA13822@lst.de> (raw)
In-Reply-To: <alpine.DEB.2.21.2106211052270.24906@sstabellini-ThinkPad-T480s>
On Mon, Jun 21, 2021 at 10:59:20AM -0700, Stefano Stabellini wrote:
> Just as a clarification: I was referring to the zeroing of "mem" in
> swiotlb_late_init_with_tbl and swiotlb_init_with_tbl. While it looks
> like Tom and Christoph are talking about the zeroing of "tlb".
Indeed.
>
> The zeroing of "mem" is required as some fields of struct io_tlb_mem
> need to be initialized to zero. While the zeroing of "tlb" is not
> required except from the point of view of not leaking sensitive data as
> Christoph mentioned.
>
> Either way, Claire's v14 patch 01/12 looks fine to me.
Agreed.
next prev parent reply other threads:[~2021-06-21 20:20 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 6:26 [PATCH v13 00/12] Restricted DMA Claire Chang
2021-06-17 6:26 ` [PATCH v13 01/12] swiotlb: Refactor swiotlb init functions Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-18 6:25 ` Claire Chang
2021-06-18 14:09 ` Tom Lendacky
2021-06-18 14:32 ` Christoph Hellwig
2021-06-21 17:59 ` Stefano Stabellini
2021-06-21 20:19 ` Christoph Hellwig [this message]
2021-06-17 6:26 ` [PATCH v13 02/12] swiotlb: Refactor swiotlb_create_debugfs Claire Chang
2021-06-17 6:26 ` [PATCH v13 03/12] swiotlb: Set dev->dma_io_tlb_mem to the swiotlb pool used Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 04/12] swiotlb: Update is_swiotlb_buffer to add a struct device argument Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 05/12] swiotlb: Update is_swiotlb_active " Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 06/12] swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing Claire Chang
2021-06-17 23:31 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 07/12] swiotlb: Move alloc_size to swiotlb_find_slots Claire Chang
2021-06-17 6:26 ` [PATCH v13 08/12] swiotlb: Refactor swiotlb_tbl_unmap_single Claire Chang
2021-06-17 6:26 ` [PATCH v13 09/12] swiotlb: Add restricted DMA alloc/free support Claire Chang
2021-06-17 23:31 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 10/12] swiotlb: Add restricted DMA pool initialization Claire Chang
2021-06-17 6:26 ` [PATCH v13 11/12] dt-bindings: of: Add restricted DMA pool Claire Chang
2021-06-17 6:26 ` [PATCH v13 12/12] of: Add plumbing for " Claire Chang
2021-06-17 6:32 ` [PATCH v13 00/12] Restricted DMA Claire Chang
2021-06-19 3:43 ` Claire Chang
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=20210621201946.GA13822@lst.de \
--to=hch@lst$(echo .)de \
--cc=airlied@linux$(echo .)ie \
--cc=andriy.shevchenko@linux$(echo .)intel.com \
--cc=bauerman@linux$(echo .)ibm.com \
--cc=bgolaszewski@baylibre$(echo .)com \
--cc=bhelgaas@google$(echo .)com \
--cc=boris.ostrovsky@oracle$(echo .)com \
--cc=bskeggs@redhat$(echo .)com \
--cc=chris@chris-wilson$(echo .)co.uk \
--cc=dan.j.williams@intel$(echo .)com \
--cc=daniel@ffwll$(echo .)ch \
--cc=devicetree@vger$(echo .)kernel.org \
--cc=dri-devel@lists$(echo .)freedesktop.org \
--cc=drinkcat@chromium$(echo .)org \
--cc=frowand.list@gmail$(echo .)com \
--cc=grant.likely@arm$(echo .)com \
--cc=gregkh@linuxfoundation$(echo .)org \
--cc=heikki.krogerus@linux$(echo .)intel.com \
--cc=intel-gfx@lists$(echo .)freedesktop.org \
--cc=iommu@lists$(echo .)linux-foundation.org \
--cc=james.quinlan@broadcom$(echo .)com \
--cc=jani.nikula@linux$(echo .)intel.com \
--cc=jgross@suse$(echo .)com \
--cc=joonas.lahtinen@linux$(echo .)intel.com \
--cc=joro@8bytes$(echo .)org \
--cc=jxgao@google$(echo .)com \
--cc=konrad.wilk@oracle$(echo .)com \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linux-pci@vger$(echo .)kernel.org \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
--cc=m.szyprowski@samsung$(echo .)com \
--cc=maarten.lankhorst@linux$(echo .)intel.com \
--cc=matthew.auld@intel$(echo .)com \
--cc=mingo@kernel$(echo .)org \
--cc=paulus@samba$(echo .)org \
--cc=peterz@infradead$(echo .)org \
--cc=rafael.j.wysocki@intel$(echo .)com \
--cc=rdunlap@infradead$(echo .)org \
--cc=robh+dt@kernel$(echo .)org \
--cc=robin.murphy@arm$(echo .)com \
--cc=rodrigo.vivi@intel$(echo .)com \
--cc=saravanak@google$(echo .)com \
--cc=sstabellini@kernel$(echo .)org \
--cc=tfiga@chromium$(echo .)org \
--cc=thomas.hellstrom@linux$(echo .)intel.com \
--cc=thomas.lendacky@amd$(echo .)com \
--cc=tientzu@chromium$(echo .)org \
--cc=treding@nvidia$(echo .)com \
--cc=will@kernel$(echo .)org \
--cc=xen-devel@lists$(echo .)xenproject.org \
--cc=xypron.glpk@gmx$(echo .)de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox