From: Will Deacon <will.deacon@arm.com>
To: Eric Auger <eric.auger@linaro.org>
Cc: "agraf@suse.de" <agraf@suse.de>,
"kim.phillips@freescale.com" <kim.phillips@freescale.com>,
"eric.auger@st.com" <eric.auger@st.com>,
"peter.maydell@linaro.org" <peter.maydell@linaro.org>,
"patches@linaro.org" <patches@linaro.org>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"a.rigo@virtualopensystems.com" <a.rigo@virtualopensystems.com>,
"Bharat.Bhushan@freescale.com" <Bharat.Bhushan@freescale.com>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"stuart.yoder@freescale.com" <stuart.yoder@freescale.com>,
"a.motakis@virtualopensystems.com"
<a.motakis@virtualopensystems.com>,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
"christoffer.dall@linaro.org" <christoffer.dall@linaro.org>
Subject: Re: [Qemu-devel] [RFC v4 08/13] hw/vfio/common: Add EXEC_FLAG to VFIO DMA mappings
Date: Mon, 7 Jul 2014 13:49:56 +0100 [thread overview]
Message-ID: <20140707124955.GH3676@arm.com> (raw)
In-Reply-To: <1404736043-22900-9-git-send-email-eric.auger@linaro.org>
On Mon, Jul 07, 2014 at 01:27:18PM +0100, Eric Auger wrote:
> From: Alvise Rigo <a.rigo@virtualopensystems.com>
>
> The flag is mandatory for the ARM SMMU so we always add it if the MMIO
> handles it.
I though the logic of this flag was changing (so that you request an NX
mapping instead), so I'd hold off on this change until the kernel has
decided what it's doing.
Also, the ARM SMMU doesn't mandate any flags, you probably need this as
a result of using a PL330, which is an odd case of a DMA master that
spits out EXEC transactions (instruction fetch).
Will
next prev parent reply other threads:[~2014-07-07 12:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-07 12:27 [Qemu-devel] [RFC v4 00/13] KVM platform device passthrough Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 01/13] vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 02/13] hw/vfio/pci: Rename VFIODevice into VFIOPCIDevice Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 03/13] hw/vfio/pci: Remove unneeded include files Eric Auger
2014-07-08 18:55 ` Alex Williamson
2014-07-23 9:59 ` Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 04/13] hw/vfio/pci: introduce VFIODevice Eric Auger
2014-07-08 22:41 ` Alex Williamson
2014-07-23 10:02 ` Eric Auger
2014-07-23 10:24 ` Peter Maydell
2014-07-23 11:40 ` Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 05/13] hw/vfio/pci: Introduce VFIORegion Eric Auger
2014-07-08 22:41 ` Alex Williamson
2014-07-23 13:50 ` Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 06/13] hw/vfio/pci: split vfio_get_device Eric Auger
2014-07-08 22:43 ` Alex Williamson
2014-07-24 9:51 ` Eric Auger
2014-07-24 10:25 ` Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 07/13] hw/vfio: create common module Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 08/13] hw/vfio/common: Add EXEC_FLAG to VFIO DMA mappings Eric Auger
2014-07-07 12:40 ` Peter Maydell
2014-07-07 12:49 ` Will Deacon [this message]
2014-07-07 13:25 ` Alvise Rigo
2014-07-07 13:29 ` Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 09/13] hw/vfio/platform: add vfio-platform support Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 10/13] hw/intc/arm_gic_kvm: enable irqfd and set routing table Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 11/13] hw/vfio/platform: Add irqfd support Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 12/13] hw/vfio/platform: add default dt generation for vfio device Eric Auger
2014-07-07 12:27 ` [Qemu-devel] [RFC v4 13/13] hw/vfio: add an example calxeda_xgmac Eric Auger
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