On Wed, Apr 15, 2020 at 03:16:27PM +0200, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From aa4113340ae6c2811e046f08c2bc21011d20a072 Mon Sep 17 00:00:00 2001
From: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>
Date: Thu, 23 Jan 2020 11:19:25 +0000
Subject: [PATCH] powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
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@xxxxxxxxxxxxxxx # v4.4+
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>
Acked-by: Scott Wood <oss@xxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200123111914.2565-1-laurentiu.tudor@xxxxxxx
Different filename in older trees.
--
Thanks,
Sasha
