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Yuxuan Shui 41c1a06d1d entry: Unbreak single step reporting behaviour 
The move of TIF_SYSCALL_EMU to SYSCALL_WORK_SYSCALL_EMU broke single step
reporting. The original code reported the single step when TIF_SINGLESTEP
was set and TIF_SYSCALL_EMU was not set. The SYSCALL_WORK conversion got
the logic wrong and now the reporting only happens when both bits are set.

Restore the original behaviour.

[ tglx: Massaged changelog and dropped the pointless double negation ]

Fixes: 64eb35f701 ("ptrace: Migrate TIF_SYSCALL_EMU to use SYSCALL_WORK flag")
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Link: https://lore.kernel.org/r/877do3gaq9.fsf@m5Zedd9JOGzJrf0
 		2021-01-28 13:46:55 +01:00
..
Makefile kernel: Implement selective syscall userspace redirection 2020-12-02 15:07:56 +01:00
common.c entry: Unbreak single step reporting behaviour 2021-01-28 13:46:55 +01:00
common.h kernel: Implement selective syscall userspace redirection 2020-12-02 15:07:56 +01:00
kvm.c Merge branch 'core/urgent' into core/entry 2020-11-04 18:14:52 +01:00
syscall_user_dispatch.c kernel: Implement selective syscall userspace redirection 2020-12-02 15:07:56 +01:00