Re: [Xen-devel] [PATCH SpectreV1+L1TF v6 2/9] x86/vioapic: block speculative out-of-bound accesses

2019-02-12 Thread Jan Beulich
>>> On 08.02.19 at 14:44, wrote: > When interacting with io apic, a guest can specify values that are used > as index to structures, and whose values are not compared against > upper bounds to prevent speculative out-of-bound accesses. This change > prevents these speculative accesses. > >

[Xen-devel] [PATCH SpectreV1+L1TF v6 2/9] x86/vioapic: block speculative out-of-bound accesses

2019-02-08 Thread Norbert Manthey
When interacting with io apic, a guest can specify values that are used as index to structures, and whose values are not compared against upper bounds to prevent speculative out-of-bound accesses. This change prevents these speculative accesses. Furthermore, variables are initialized and the