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Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR |
Date: |
Mon, 8 Aug 2016 17:06:48 +0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Tue, Aug 02, 2016 at 03:17:20PM +0300, David Kiarie wrote:
> On Tue, Aug 2, 2016 at 3:12 PM, Peter Xu <address@hidden> wrote:
>
> > On Tue, Aug 02, 2016 at 02:58:55PM +0300, David Kiarie wrote:
> > > > Sure. David, so do you like to do it or I cook this patch? :)
> > >
> > > If there are no objections I will look at this employing Jan's approach:
> > > associating a write with an address space.
> >
> > Do you mean to translate current stl_le_phys() into something like
> > address_space_stl_le(), with MemTxAttrs? (in ioapic_service())
> >
>
> I tried doing something like that but the write gets discarded somewhere. I
> don't see the write from IOMMU side.
Hi, Jan, David,
Sorry to respond late, but what's the version of your guest kernel? I
suspect there is bug in guest IOMMU codes with IR on EOI handling, and
maybe you can try to boost IOAPIC version to 0x20 when with old
kernels using "-global ioapic.version=0x20".
Thanks,
-- peterx
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, Jan Kiszka, 2016/08/01
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, Peter Xu, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, Jan Kiszka, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, Peter Xu, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, David Kiarie, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, Peter Xu, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, David Kiarie, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, Jan Kiszka, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR,
Peter Xu <=
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, David Kiarie, 2016/08/08
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, Jan Kiszka, 2016/08/02
- Re: [Qemu-devel] [PULL v5 29/57] intel_iommu: add SID validation for IR, David Kiarie, 2016/08/02