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Re: [Qemu-devel] [RFC v4 08/13] hw/vfio/common: Add EXEC_FLAG to VFIO DM
From: |
Eric Auger |
Subject: |
Re: [Qemu-devel] [RFC v4 08/13] hw/vfio/common: Add EXEC_FLAG to VFIO DMA mappings |
Date: |
Mon, 07 Jul 2014 15:29:10 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
On 07/07/2014 03:25 PM, Alvise Rigo wrote:
> Il 07/07/2014 14:49, Will Deacon ha scritto:
>> On Mon, Jul 07, 2014 at 01:27:18PM +0100, Eric Auger wrote:
>>> From: Alvise Rigo <address@hidden>
>>>
>>> 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.
>
> Yes, you are right.
> This patch is not needed anymore, in fact it was dropped in my last
> patch series.
> It should not be here, please ignore it.
OK. My apologies.
Best Regards
Eric
>
> Regards,
> alvise
>
>>
>> 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
>>
- Re: [Qemu-devel] [RFC v4 04/13] hw/vfio/pci: introduce VFIODevice, (continued)
- [Qemu-devel] [RFC v4 09/13] hw/vfio/platform: add vfio-platform support, Eric Auger, 2014/07/07
- [Qemu-devel] [RFC v4 11/13] hw/vfio/platform: Add irqfd support, Eric Auger, 2014/07/07
- [Qemu-devel] [RFC v4 10/13] hw/intc/arm_gic_kvm: enable irqfd and set routing table, Eric Auger, 2014/07/07
- [Qemu-devel] [RFC v4 12/13] hw/vfio/platform: add default dt generation for vfio device, Eric Auger, 2014/07/07
- [Qemu-devel] [RFC v4 13/13] hw/vfio: add an example calxeda_xgmac, Eric Auger, 2014/07/07