On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote: > On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev <stsp@xxxxxxx> wrote: > > 08.03.2017 19:06, Andy Lutomirski пишет: > >> > >> On Wed, Mar 8, 2017 at 6:08 AM, Stas Sergeev <stsp@xxxxxxx> wrote: > >>> > >>> 08.03.2017 03:32, Ricardo Neri пишет: > >>>> > >>>> These are the instructions covered by UMIP: > >>>> * 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 patchset initially treated tasks running in virtual-8086 > mode as a > >>>> special case. However, I received clarification that DOSEMU[8] > does not > >>>> support applications that use these instructions. > >> > >> Can you remind me what was special about it? It looks like you > still > >> emulate them in v8086 mode. > > > > Indeed, sorry, I meant prot mode here. :) > > So I wonder what was cited to be special about v86. Initially my patches disabled UMIP on virtual-8086 instructions, without regards of protected mode (i.e., UMIP was always enabled). I didn't have emulation at the time. Then, I added emulation code that now covers protected and virtual-8086 modes. I guess it is not special anymore. 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
