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[PATCH 0/2] x86/shadow: MMIO treatment


  • To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Fri, 13 Jan 2023 09:46:49 +0100
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  • Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, Xenia Ragiadakou <burzalodowa@xxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>
  • Delivery-date: Fri, 13 Jan 2023 08:46:58 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

While reviewing Xenia's change to iommu_snoop placement, I've
spotted a shortcoming in _sh_propagate(), fixing of which made
me notice (again) a 2nd kind of issue.

1: sanitize iommu_snoop usage
2: further correct MMIO handling in _sh_propagate()

Jan



 


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