Re: [v6 PATCH 21/21] selftests/x86: Add tests for User-Mode Instruction Prevention

2017-03-10 Thread Ricardo Neri
On Wed, 2017-03-08 at 07:56 -0800, Andy Lutomirski wrote: > On Tue, Mar 7, 2017 at 4:32 PM, Ricardo Neri > wrote: > > Certain user space programs that run on virtual-8086 mode may utilize > > instructions protected by the User-Mode Instruction Prevention

Re: [v6 PATCH 21/21] selftests/x86: Add tests for User-Mode Instruction Prevention

2017-03-10 Thread Ricardo Neri
On Wed, 2017-03-08 at 07:56 -0800, Andy Lutomirski wrote: > On Tue, Mar 7, 2017 at 4:32 PM, Ricardo Neri > wrote: > > Certain user space programs that run on virtual-8086 mode may utilize > > instructions protected by the User-Mode Instruction Prevention (UMIP) > > security feature present in new

Re: [v6 PATCH 21/21] selftests/x86: Add tests for User-Mode Instruction Prevention

2017-03-08 Thread Andy Lutomirski
On Tue, Mar 7, 2017 at 4:32 PM, Ricardo Neri wrote: > Certain user space programs that run on virtual-8086 mode may utilize > instructions protected by the User-Mode Instruction Prevention (UMIP) > security feature present in new Intel processors: SGDT, SIDT

Re: [v6 PATCH 21/21] selftests/x86: Add tests for User-Mode Instruction Prevention

2017-03-08 Thread Andy Lutomirski
On Tue, Mar 7, 2017 at 4:32 PM, Ricardo Neri wrote: > Certain user space programs that run on virtual-8086 mode may utilize > instructions protected by the User-Mode Instruction Prevention (UMIP) > security feature present in new Intel processors: SGDT, SIDT and SMSW. In > such a case, a general

[v6 PATCH 21/21] selftests/x86: Add tests for User-Mode Instruction Prevention

2017-03-07 Thread Ricardo Neri
Certain user space programs that run on virtual-8086 mode may utilize instructions protected by the User-Mode Instruction Prevention (UMIP) security feature present in new Intel processors: SGDT, SIDT and SMSW. In such a case, a general protection fault is issued if UMIP is enabled. When such a

[v6 PATCH 21/21] selftests/x86: Add tests for User-Mode Instruction Prevention

2017-03-07 Thread Ricardo Neri
Certain user space programs that run on virtual-8086 mode may utilize instructions protected by the User-Mode Instruction Prevention (UMIP) security feature present in new Intel processors: SGDT, SIDT and SMSW. In such a case, a general protection fault is issued if UMIP is enabled. When such a