On Sat, 2017-05-06 at 11:04 +0200, Paolo Bonzini wrote: > > > On 05/05/2017 20:17, Ricardo Neri wrote: > > User-Mode Instruction Prevention is a security feature present in > new > > Intel processors that, when set, prevents the execution of a subset > of > > instructions if such instructions are executed in user mode (CPL > > 0). > > Attempting to execute such instructions causes a general protection > > exception. > > > > The subset of instructions comprises: > > > > * SGDT - Store Global Descriptor Table > > * SIDT - Store Interrupt Descriptor Table > > * SLDT - Store Local Descriptor Table > > * SMSW - Store Machine Status Word > > * STR - Store Task Register > > > > This feature is also added to the list of disabled-features to allow > > a cleaner handling of build-time configuration. > > > > Cc: Andy Lutomirski <luto@xxxxxxxxxx> > > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > > Cc: H. Peter Anvin <hpa@xxxxxxxxx> > > Cc: Borislav Petkov <bp@xxxxxxx> > > Cc: Brian Gerst <brgerst@xxxxxxxxx> > > Cc: Chen Yucong <slaoub@xxxxxxxxx> > > Cc: Chris Metcalf <cmetcalf@xxxxxxxxxxxx> > > Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > > Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx> > > Cc: Huang Rui <ray.huang@xxxxxxx> > > Cc: Jiri Slaby <jslaby@xxxxxxx> > > Cc: Jonathan Corbet <corbet@xxxxxxx> > > Cc: Michael S. Tsirkin <mst@xxxxxxxxxx> > > Cc: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx> > > Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > Cc: Ravi V. Shankar <ravi.v.shankar@xxxxxxxxx> > > Cc: Shuah Khan <shuah@xxxxxxxxxx> > > Cc: Vlastimil Babka <vbabka@xxxxxxx> > > Cc: Tony Luck <tony.luck@xxxxxxxxx> > > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> > > Cc: Liang Z. Li <liang.z.li@xxxxxxxxx> > > Cc: Alexandre Julliard <julliard@xxxxxxxxxx> > > Cc: Stas Sergeev <stsp@xxxxxxx> > > Cc: x86@xxxxxxxxxx > > Cc: linux-msdos@xxxxxxxxxxxxxxx > > > > Signed-off-by: Ricardo Neri <ricardo.neri-calderon@xxxxxxxxxxxxxxx> > > Would it be possible to have this patch in a topic branch for KVM's > consumption? > I have put a branch here with this single patch: https://github.com/ricardon/tip.git rneri/umip_for_kvm This is based on Linux v4.11. Please let me know if this works for your or you'd prefer it to be based on a different branch/commit/repo. Thanks and BR, Ricardo -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
