On Tue, Oct 27, 2020 at 09:51:16PM +0000, Will Deacon wrote:
> diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
> index 4784011cecac..c45b5f9dd66b 100644
> --- a/arch/arm64/kernel/process.c
> +++ b/arch/arm64/kernel/process.c
> @@ -542,6 +542,17 @@ static void erratum_1418040_thread_switch(struct task_struct *prev,
> write_sysreg(val, cntkctl_el1);
> }
>
> +static void compat_thread_switch(struct task_struct *next)
> +{
> + if (!is_compat_thread(task_thread_info(next)))
> + return;
> +
> + if (!system_has_mismatched_32bit_el0())
> + return;
> +
> + set_tsk_thread_flag(next, TIF_NOTIFY_RESUME);
> +}
I wonder whether you could use set_notify_resume() for consistency.
--
Catalin
