Re: [PATCH v4 0/1] MR2118: ntdll: Explaining with wine requires a 3G/1G split on 32bit

[Alexandre Julliard (＠julliard)]

Alexandre Julliard (@julliard) commented about dlls/ntdll/unix/loader.c:
> #elif defined(__linux__) && (defined(__i386__) || defined(__arm__))
>
> +/* In Win32, KUSER_SHARED_DATA is at a fixed address (0x7ffe0000), so it needs
> + * to be mapped there in every virtual process space by wine.
> + *
> + * It is used to map kernel address space pages to user space, so that it is
> + * user-space readable without any syscall overhead. It is very comparable
> + * to Linux's vDSO.

Actually it's very different from vDSO.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/2118#note_23130