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Re: [Xen-devel] [PATCH v5 00/10] AMD IOMMU: further improvements

  • To: Jan Beulich <jbeulich@xxxxxxxx>
  • From: "Woods, Brian" <Brian.Woods@xxxxxxx>
  • Date: Thu, 15 Aug 2019 22:30:28 +0000
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  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "Woods, Brian" <Brian.Woods@xxxxxxx>, "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Delivery-date: Thu, 15 Aug 2019 22:30:39 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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  • Thread-topic: [PATCH v5 00/10] AMD IOMMU: further improvements

On Tue, Aug 06, 2019 at 03:05:36PM +0200, Jan Beulich wrote:
> Only the first patch here is left from v4, everything else is new,
> yet still related. The main goal is to reduce the huge memory
> overhead that we've noticed. On the way there a number of other
> things were once again noticed. Unfortunately before I was able to
> also test the last two patches there, my Rome box broke again.
> Hence these two patches have been tested on a (less affected)
> Fam15 system only.
> 01: miscellaneous DTE handling adjustments
> 02: drop stray "else"
> 03: don't free shared IRT multiple times
> 04: introduce a "valid" flag for IVRS mappings
> 05: let callers of amd_iommu_alloc_intremap_table() handle errors
> 06: don't blindly allocate interrupt remapping tables
> 07: make phantom functions share interrupt remapping tables
> 08: x86/PCI: read MSI-X table entry count early
> 09: replace INTREMAP_ENTRIES
> 10: restrict interrupt remapping table sizes
> Full set of patches once again attached here due to still unresolved
> email issues over here.
> Jan

I don't think I have enough time here left to review these, but I've
tested them via PCI device passthrough on an AMD Rome system.

Brian Woods

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