[Wine] vm86 mode is not supported

[Zoltan Boszormenyi]

Darragh Bailey írta:
> On Thu, Jun 11, 2009 at 12:20:36PM -0400, John Drescher wrote:
>   
>> No you can not get vm86 in your 64 bit kernel. But you can install
>> your application in a 32 bit linux under virtualbox if you have to and
>> then copy your wine prefix to your 64 bit machine. That is if only the
>> installer is a dos application.
>>
>> John
>>     
>
> That does not ring true since I have a 64 bit kernel and I can confirm
> that I do not get the same error as the user. However once I checked
> what the file was and it reported it as an MS-DOS self extracting
> archive it seemed that lack of vm86 support in his distro kernel was
> responsible.
>
> I've done some digging, and as far as I can determine, sys_vm86 should
> be available on most x86_64 kernels, it certain is on my amd64 gentoo
> box.
>
> grep vm86 /proc/kallsyms 
> ffffffff8022c690 T sys32_vm86_warning
> ffffffff80252d20 W sys_vm86
> ffffffff80252d20 W sys_vm86old
>   

Those calls in the x86_64 kernels are only for returning
an error and logging the message in the syslog that vm86
is not supported.

There is/was a patch for supporting it though:
http://v86-64.sourceforge.net/

> So, no need to mess with your kernel.
>
>
> The problem appears to be that wine for your platform was built against
> a glibc that did not install a /usr/include/sys/vm86.h which in turn
> references /usr/include/asm/vm86.h. Package name varies from distro to
> distro, so it could be glibc-kernheaders or something similar for you.
>
> I can only suggest that if those files exist for you, that you should
> contact the package maintainer and point this out as a package build
> problem, or if they don't you'll have to contact your distribution
> support channels as ask why it's not available.
>
>