powerpc/fsl_booke: Avoid creating duplicate tlb1 entry

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In the current implementation, the call to loadcam_multi() is wrapped
between switch_to_as1() and restore_to_as0() calls so, when it tries
to create its own temporary AS=1 TLB1 entry, it ends up duplicating
the existing one created by switch_to_as1(). Add a check to skip
creating the temporary entry if already running in AS=1.

Fixes: d9e1831a42 ("powerpc/85xx: Load all early TLB entries at once")
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200123111914.2565-1-laurentiu.tudor@nxp.com

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Laurentiu Tudor 2020-01-23 11:19:25 +00:00 • committed by Michael Ellerman

parent 3670664b5d

commit aa4113340a

1 changed files with 11 additions and 1 deletions

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arch/powerpc/mm/nohash/tlb_low.S

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