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42e6d5e5ee
Just one fix, to add a barrier in the switch_mm() code to make sure the mm cpumask update is ordered vs the MMU starting to load translations. As far as we know no one's actually hit the bug, but that's just luck. Thanks to: Benjamin Herrenschmidt, Nicholas Piggin. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJZoAZDAAoJEFHr6jzI4aWAi3AQAJq4boEBqdmL042oNK4PWW0M uGfehNmtzCw9Hp8bPfzOf8NypJ51Kw7eDQELaeSaazKW+gffUCBeEsKGS7kmHvc+ x1tHxkXxI7PXuNIRojJg9y7rlKXdRym5SecvPSo1cm/c46RRWOlNGZaIwiHyrXSh eBjyP5EHu1HXpRxkcUh+//PQp2b+7SmgUYzSf0hA9UCtzSZSJr19DuY8uhetI9Ws AfjkO1uvb2KETqBVegGBpAruZzQtxqdtffd2HToSaCHUnAKma2iqUZqkqBNjL6OQ gSXWpXVInng/7ktrrfEgSiwlHns7pgHkxYHS8thDZqQpIt3GNsUg2UwpHGf6oL7V L+GtRp36LM91Ueq6KdlU7bJkmoiJ798Hnp3FOjpkqo+j/MGuCQDDDK4Ge1popehJ a17K7lE/FKGqNaFINc1Q6hnXg4MPyawAOLDlV839Ap5+ISPS6WcHaa1AgKjdQNkH fIkZZsYT531FIf853AjUGFw8frSlVfrHmIx9/HJOhEa1KHQhBqGRV1sWYEjuN6IB av+tQDlleG5aT641qhHlA/hN5DGrGZXLp8e6cFRufF+CSsRayL27u0Qw9pP9VZ3S bgfdnmZZyP23+bzaq/m/bjhRiOf0snSQPxIKe56KmNCJ8buTrGWDw4IuiPKB7Y6V 06vBFn7ZUP5aeHIZkS62 =IClj -----END PGP SIGNATURE----- Merge tag 'powerpc-4.13-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fix from Michael Ellerman: "Just one fix, to add a barrier in the switch_mm() code to make sure the mm cpumask update is ordered vs the MMU starting to load translations. As far as we know no one's actually hit the bug, but that's just luck. Thanks to Benjamin Herrenschmidt, Nicholas Piggin" * tag 'powerpc-4.13-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/mm: Ensure cpumask update is ordered |
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