[Bug 19752] New: Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

Summary: Integrate support for v86-64?
           Product: Wine
           Version: 1.1.27
          Platform: PC
               URL: http://sourceforge.net/projects/v86-64/
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: ntdll
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

The error

wine: Cannot start DOS application "foo.exe" because vm86 mode is not supported
on this platform.

pops up when trying to run 16 bit dos apps in wine on x86_64 systems
(e.g. bug 16037, or trying to run win16test).

This is a kernel limitation for which a patch seems to be available:
http://sourceforge.net/projects/v86-64/

That kernel patch also comes with a wine patch.

We may want to support it sometime.

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

--- Comment #1 from Austin English   2009-08-16 14:37:34 ---
Created an attachment (id=23119)
 --> (http://bugs.winehq.org/attachment.cgi?id=23119)
patch

The patch from v86-64.

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

--- Comment #2 from Vitaliy Margolen   2009-08-16 14:39:28 ---
16-bit windows apps can work. 16-bit DOS app in vm86 mode won't work. It's a
hardware limitation (CPUs don't support vm86 mode in 64-bit protected mode).

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

Dmitry Timoshkov  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|ntdll                       |-unknown

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

André H.  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch
                 CC|                            |[e-mail]

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

Damjan Jovanovic  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #3 from Damjan Jovanovic   2010-05-19 05:39:49 ---
(In reply to comment #2)
> 16-bit windows apps can work. 16-bit DOS app in vm86 mode won't work. It's a
> hardware limitation (CPUs don't support vm86 mode in 64-bit protected mode).

That patch actually switches the CPU into 32-bit PM mode, then VM86 mode. It
will work even for 16-bit DOS apps.

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

Jerome Leclanche  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #4 from Jerome Leclanche  2011-11-08 09:00:18 CST ---
So I take it this patch is not fit for wine?

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

--- Comment #5 from Damjan Jovanovic  2011-11-08 10:09:02 CST ---
(In reply to comment #4)
> So I take it this patch is not fit for wine?

See http://www.winehq.org/pipermail/wine-devel/2010-April/083002.html

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

--- Comment #6 from Jerome Leclanche  2011-11-08 10:12:01 CST ---
(In reply to comment #5)
Interesting.
Did the feature make it into the linux kernel?

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

--- Comment #7 from André H.  2011-11-08 12:43:02 CST ---
i wonder where my comment moved to... so again: we went the dosbox way, but
Support for this seems possible. so i will have a look at it next weekend and
try to clean up the patch. and yeah, whats the state of the kernel part? if not
yet in, do some distros ship it?

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

--- Comment #8 from Alexandre Julliard  2011-11-08 13:04:18 CST ---
If that's going to be supported in the kernel it should be through the standard
syscall. There's no reason to change Wine.

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

--- Comment #9 from Jerome Leclanche  2011-11-08 13:05:21 CST ---
(In reply to comment #8)
Does this mean this bug is invalid?

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

André H.  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID

--- Comment #10 from André H.  2011-11-08 13:31:32 CST ---
(In reply to comment #9)
> (In reply to comment #8)
> Does this mean this bug is invalid?

i would say yes

[Bug 19752] Integrate support for v86-64?

http://bugs.winehq.org/show_bug.cgi?id=19752

Austin English  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #11 from Austin English  2011-11-14 14:25:46 CST ---
Closing.