Thomas Weißschuh <linux@xxxxxxxxxxxxxx> writes:
> sched_core_share_pid() copies the cookie to userspace with
> put_user(id, (u64 __user *)uaddr), expecting 64 bits of space.
> The "unsigned long" datatype that is documented in core-scheduling.rst
> however is only 32 bits large on 32 bit architectures.
>
> Document "unsigned long long" as the correct data type that is always
> 64bits large.
>
> This matches what the selftest cs_prctl_test.c has been doing all along.
>
> Fixes: 0159bb020ca9 ("Documentation: Add usecases, design and interface for core scheduling")
> Cc: stable@xxxxxxxxxxxxxxx
> Link: https://lore.kernel.org/util-linux/df7a25a0-7923-4f8b-a527-5e6f0064074d@xxxxxxxx/
> Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
> ---
> Documentation/admin-guide/hw-vuln/core-scheduling.rst | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/admin-guide/hw-vuln/core-scheduling.rst b/Documentation/admin-guide/hw-vuln/core-scheduling.rst
> index cf1eeefdfc32..a92e10ec402e 100644
> --- a/Documentation/admin-guide/hw-vuln/core-scheduling.rst
> +++ b/Documentation/admin-guide/hw-vuln/core-scheduling.rst
> @@ -67,8 +67,8 @@ arg4:
> will be performed for all tasks in the task group of ``pid``.
>
> arg5:
> - userspace pointer to an unsigned long for storing the cookie returned by
> - ``PR_SCHED_CORE_GET`` command. Should be 0 for all other commands.
> + userspace pointer to an unsigned long long for storing the cookie returned
> + by ``PR_SCHED_CORE_GET`` command. Should be 0 for all other commands.
>
Applied, thanks.
jon
