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Re: [Qemu-arm] [PATCH v2 00/13] iommu: support txattrs, support TCG exec
From: |
Peter Maydell |
Subject: |
Re: [Qemu-arm] [PATCH v2 00/13] iommu: support txattrs, support TCG execution, implement TZ MPC |
Date: |
Tue, 5 Jun 2018 10:13:12 +0100 |
On 5 June 2018 at 08:39, Peter Xu <address@hidden> wrote:
> On Mon, Jun 04, 2018 at 04:29:28PM +0100, Peter Maydell wrote:
>> Hi; this is v2 of my iommu patchset, which does:
>> * support IOMMUs that are aware of memory transaction attributes and
>> may generate different translations for different attributes
>> * support TCG execution out of memory which is behind an IOMMU
>> * implement the Arm TrustZone Memory Protection Controller
>> (which needs both the above features in the IOMMU core code)
>> * use the MPC in the mps2-an505 board
> It seems that this series is still using the IOMMU index way. In case
> I missed anything... Could you elaborate a bit on why this IOMMU index
> solution is preferred comparing to the way to pass in MemTxAttrs? Or
> was there any further discussion I missed on the topic?
>
> My last post to previous series is here:
>
> https://lists.gnu.org/archive/html/qemu-devel/2018-05/msg05702.html
>
> In that, I was still confused on why we couldn't use the existing
> MemTxAttrs directly instead of the new IOMMU index (and I explained on
> why that was prefered at least to me). I didn't see replies
> afterwards.
Broadly speaking I didn't think I had any further better
explanation than I'd already given in that thread, eg here:
https://lists.gnu.org/archive/html/qemu-devel/2018-05/msg05250.html
and here:
https://lists.gnu.org/archive/html/qemu-devel/2018-05/msg05513.html
If you want to make a specific (detailed) counterproposal of a
different API, I'm happy to look at whether that works for
the use cases I care about and whether it's a nicer way to do it.
thanks
-- PMM
- Re: [Qemu-arm] [Qemu-devel] [PATCH v2 05/13] hw/misc/tz-mpc.c: Implement the Arm TrustZone Memory Protection Controller, (continued)
[Qemu-arm] [PATCH v2 09/13] hw/core/or-irq: Support more than 16 inputs to an OR gate, Peter Maydell, 2018/06/04
[Qemu-arm] [PATCH v2 13/13] hw/arm/mps2-tz.c: Instantiate MPCs, Peter Maydell, 2018/06/04
[Qemu-arm] [PATCH v2 10/13] hw/misc/iotkit-secctl.c: Implement SECMPCINTSTATUS, Peter Maydell, 2018/06/04
[Qemu-arm] [PATCH v2 11/13] hw/arm/iotkit: Instantiate MPC, Peter Maydell, 2018/06/04
[Qemu-arm] [PATCH v2 12/13] hw/arm/iotkit: Wire up MPC interrupt lines, Peter Maydell, 2018/06/04
Re: [Qemu-arm] [Qemu-devel] [PATCH v2 00/13] iommu: support txattrs, support TCG execution, implement TZ MPC, no-reply, 2018/06/04
Re: [Qemu-arm] [PATCH v2 00/13] iommu: support txattrs, support TCG execution, implement TZ MPC, Peter Xu, 2018/06/05
- Re: [Qemu-arm] [PATCH v2 00/13] iommu: support txattrs, support TCG execution, implement TZ MPC,
Peter Maydell <=
Re: [Qemu-arm] [Qemu-devel] [PATCH v2 00/13] iommu: support txattrs, support TCG execution, implement TZ MPC, Peter Maydell, 2018/06/14