On Sun, Oct 27, 2019 at 02:53:33PM +0100, 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 9405447ef79bc93101373e130f72e9e6cbf17dbb Mon Sep 17 00:00:00 2001 From: Marc Zyngier <maz@xxxxxxxxxx> Date: Tue, 9 Apr 2019 16:22:24 +0100 Subject: [PATCH] arm64: Avoid Cavium TX2 erratum 219 when switching TTBR As a PRFM instruction racing against a TTBR update can have undesirable effects on TX2, NOP-out such PRFM on cores that are affected by the TX2-219 erratum. Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Rather than backporting this, we need to look into backporting the rest of the errata fixes. I'll look into that... -- Thanks, Sasha
