Re: [PATCH v4 0/4] MR9060: ntdll: Fix crashes in syscall dispatcher due to attempt to restore unitialized data.

[Paul Gofman (＠gofman)]

Actually, I can probably avoid that and just set eflags to default in sigusr1 (then fixing up the FPU state in handle_syscall_trap, so usr1_handler won't clear trap flag). DF must be clear on Unix call enter, everything else is volatile.