Re: [PATCH 0/21] MR4445: ntdll: Unwind the kernel stack on thread exit.

[Rémi Bernon]

Rémi Bernon (@rbernon) commented about dlls/ntdll/unix/signal_x86_64.c:
> #endif
>                     /* switch to kernel stack */
>                     "movq %rcx,%rsp\n"
> +                   /* we're now on the kernel stack, stitch unwind info with previous frame */
> +                   __ASM_CFI_CFA_IS_AT2(rsp, 0xb8, 0x01) /* frame->syscall_cfa */
> +                   __ASM_CFI_REG_IS_AT2(rsp, rsp, 0xb8, 0x01)
                   __ASM_CFI_CFA_IS_AT2(rsp, 0xa8, 0x01) /* frame->syscall_cfa */
                   __ASM_CFI_REG_IS_AT2(rsp, rsp, 0xa8, 0x01)

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https://gitlab.winehq.org/wine/wine/-/merge_requests/4445#note_53032