Understanding 64bit implications and wine64

Ben Klein shacklein at gmail.com
Tue Feb 9 19:20:54 CST 2010

On 10 February 2010 09:11, David Gerard <dgerard at gmail.com> wrote:
> On 9 February 2010 18:16, David Laight <david at l8s.co.uk> wrote:
>> A 32bit (i386) windows application binary can only run in a 32bit
>> Unix application [1].  In which case the Unix kernel will handle the
>> system call emulation and ensure that the only user-space virtual
>> addresses the application sees are 32bit (it may be able to give
>> the app almost 4G of user address space - instead of the usual 3G).
> So the Wine on my 64-bit Ubuntu (which works perfectly well) is
> actually a 32-bit app? I didn't know that!

Yup. If Wine runs win32 apps (which most Windows apps are), then it's
32bit. WoW64 for the win64+win32 wine is not ready, afaik.

More information about the wine-devel mailing list