From: "Michael S. Tsirkin" <mst@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Srivatsa Vaddagiri <vatsa@codeaurora.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
tsoni@codeaurora.org, virtio-dev@lists.oasis-open.org,
konrad.wilk@oracle.com, jasowang@redhat.com,
christoffer.dall@arm.com,
virtualization@lists.linux-foundation.org,
alex.bennee@linaro.org, iommu@lists.linux-foundation.org,
stefano.stabellini@xilinx.com, will@kernel.org,
linux-kernel@vger.kernel.org, pratikp@codeaurora.org
Subject: Re: [PATCH 5/5] virtio: Add bounce DMA ops
Date: Wed, 29 Apr 2020 06:45:10 -0400 [thread overview]
Message-ID: <20200429064458-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <f52556e2-253e-2dbc-cb7a-a7991e3bcfde@siemens.com>
On Wed, Apr 29, 2020 at 12:26:43PM +0200, Jan Kiszka wrote:
> On 29.04.20 12:20, Michael S. Tsirkin wrote:
> > On Wed, Apr 29, 2020 at 03:39:53PM +0530, Srivatsa Vaddagiri wrote:
> > > That would still not work I think where swiotlb is used for pass-thr devices
> > > (when private memory is fine) as well as virtio devices (when shared memory is
> > > required).
> >
> > So that is a separate question. When there are multiple untrusted
> > devices, at the moment it looks like a single bounce buffer is used.
> >
> > Which to me seems like a security problem, I think we should protect
> > untrusted devices from each other.
> >
>
> Definitely. That's the model we have for ivshmem-virtio as well.
>
> Jan
Want to try implementing that?
> --
> Siemens AG, Corporate Technology, CT RDA IOT SES-DE
> Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2020-04-29 10:45 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-28 11:39 [PATCH 0/5] virtio on Type-1 hypervisor Srivatsa Vaddagiri
2020-04-28 11:39 ` [PATCH 1/5] swiotlb: Introduce concept of swiotlb_pool Srivatsa Vaddagiri
2020-04-29 0:31 ` kbuild test robot
2020-04-28 11:39 ` [PATCH 2/5] swiotlb: Allow for non-linear mapping between paddr and vaddr Srivatsa Vaddagiri
2020-04-28 11:39 ` [PATCH 3/5] swiotlb: Add alloc and free APIs Srivatsa Vaddagiri
2020-04-30 4:18 ` kbuild test robot
2020-04-28 11:39 ` [PATCH 4/5] swiotlb: Add API to register new pool Srivatsa Vaddagiri
2020-04-28 11:39 ` [PATCH 5/5] virtio: Add bounce DMA ops Srivatsa Vaddagiri
2020-04-28 16:17 ` Michael S. Tsirkin
[not found] ` <20200428121232-mutt-send-email-mst-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2020-04-28 17:49 ` Srivatsa Vaddagiri
2020-04-28 20:41 ` Michael S. Tsirkin
2020-04-28 23:04 ` Stefano Stabellini
2020-04-29 4:09 ` Srivatsa Vaddagiri
2020-04-29 2:22 ` Lu Baolu
2020-04-29 4:57 ` Michael S. Tsirkin
2020-04-29 5:42 ` Lu Baolu
2020-04-29 6:50 ` Michael S. Tsirkin
2020-04-29 7:01 ` Lu Baolu
2020-04-29 9:44 ` Srivatsa Vaddagiri
2020-04-29 9:52 ` Michael S. Tsirkin
2020-04-29 10:09 ` Srivatsa Vaddagiri
2020-04-29 10:20 ` Michael S. Tsirkin
2020-04-29 10:26 ` Jan Kiszka
2020-04-29 10:45 ` Michael S. Tsirkin [this message]
2020-04-29 10:55 ` Jan Kiszka
2020-04-29 10:34 ` Srivatsa Vaddagiri
2020-04-30 15:20 ` Konrad Rzeszutek Wilk
2020-04-29 3:35 ` Srivatsa Vaddagiri
2020-04-28 21:35 ` kbuild test robot
[not found] ` <1588073958-1793-6-git-send-email-vatsa-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2020-04-28 22:18 ` kbuild test robot
2020-04-28 22:53 ` Stefano Stabellini
2020-04-29 21:06 ` kbuild test robot
2020-04-29 21:06 ` [RFC PATCH] virtio: virtio_pool can be static kbuild test robot
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