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| author | Laurentiu Tudor <laurentiu.tudor@nxp.com> | 2020-01-23 11:19:25 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-24 08:00:51 +0200 |
| commit | 995f8a96818a951f84878e4d0f18703ad90486d7 (patch) | |
| tree | 44f365907916c58559248e27fdbb91d9aea4fbbd /drivers/misc/echo/echo.c | |
| parent | 63e715f351d254a7bb0926bc9738dfb154fe2abf (diff) | |
powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
[ Upstream commit aa4113340ae6c2811e046f08c2bc21011d20a072 ]
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: d9e1831a4202 ("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
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/misc/echo/echo.c')
0 files changed, 0 insertions, 0 deletions