Re: [PATCH v4 0/9] MR1324: Draft: ntdll: Use a faster code path for unix calls.

[Alexandre Julliard (＠julliard)]

> I replaced `mov %gs:0x30,%rcx; mov 0x328(%rcx),%rcx` with `mov %gs:0x328,%rcx`, and it works fine though I don't know why there was this double indirection? It is choking the CPU on entry.

That's needed for macOS. It will be removed when we implement %gs switching on syscall entry/exit.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/1324#note_16180