Re: [Xen-devel] [PATCH v2] x86: defer not-present segment checks

2016-10-10 Thread Andrew Cooper
On 10/10/16 11:04, Jan Beulich wrote: > Following on from commits 5602e74c60 ("x86emul: correct loading of > %ss") and bdb860d01c ("x86/HVM: correct segment register loading during > task switch") the point of the non-.present checks needs to be refined: > #NP (and its #SS companion), other than su

[Xen-devel] [PATCH v2] x86: defer not-present segment checks

2016-10-10 Thread Jan Beulich
Following on from commits 5602e74c60 ("x86emul: correct loading of %ss") and bdb860d01c ("x86/HVM: correct segment register loading during task switch") the point of the non-.present checks needs to be refined: #NP (and its #SS companion), other than suggested by the various instruction pages in In