Re: [Xen-devel] [PATCH v1 3/6] x86: Enable Supervisor Mode Execution Prevention (SMAP) for Xen

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 16.04.14 at 11:10, <andrew.cooper3@xxxxxxxxxx> wrote:
> On a broader note, how do implicit supervisor accesses interact with
> SMAP when the usermode code is using alignment checking?  Do we end up
> with spurious SMAP violations for accesses to the GDT, LDT, IDT and TSS?

None of these should be mapped with the U bit set at all levels.

Jan


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