On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote:But isn't SLDT&friends just throw UD in v86?
On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev <stsp@xxxxxxx> wrote:Initially my patches disabled UMIP on virtual-8086 instructions, without
08.03.2017 19:06, Andy Lutomirski ÐÐÑÐÑ:mode as a
On Wed, Mar 8, 2017 at 6:08 AM, Stas Sergeev <stsp@xxxxxxx> wrote:
08.03.2017 03:32, Ricardo Neri ÐÐÑÐÑ:
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
does notspecial case. However, I received clarification that DOSEMU
stillCan you remind me what was special about it? It looks like yousupport applications that use these instructions.
emulate them in v8086 mode.Indeed, sorry, I meant prot mode here. :)
So I wonder what was cited to be special about v86.
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.