Helping Wine use 64 bit Mesa OGL drivers for 32-bit Windows applications

[Derek Lesho]

Oh interesting, thanks for looking into this guys. As far as I 
understand it though, this is still not duplicating the mapping, but 
setting up a fault handler at the original address to manage access. I 
don't think we'd want this since when wine remaps the page/s hosting a 
given buffer it also forces all other resources mapped to the same 
page/s to go through this presumably slow fault handler. Am I missing 
something?

Am 10/24/24 um 18:40 schrieb tblodt at icloud.com:
> Wait, apparently this was fully merged in kernel 5.13? The man page is 
> simply out of date. 
> https://github.com/torvalds/linux/commit/a4609387859f0281951f5e476d9f76d7fb9ab321
>
> ~Theodore
>
>> On Oct 24, 2024, at 9:37 AM, tblodt at icloud.com wrote:
>>
>> 
>>> On Oct 24, 2024, at 1:04 AM, Derek Lesho <dlesho at codeweavers.com> wrote:
>>>
>>> In my last mail I responded to this approach all the way at the 
>>> bottom, so it probably got lost: mremap on Linux as it exists now 
>>> won't work as it only supports private anonymous mappings (in 
>>> conjunction with MREMAP_DONTUNMAP), which GPU mappings are not.
>>
>> This is seemingly not insurmountable: 
>> https://lore.kernel.org/linux-mm/20210303175235.3308220-1-bgeffon@google.com/ 
>>
>>
>> ~Theodore
>>
>>
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