On Tue, 9 Feb 2016 11:29:16 -0800
David Daney <ddaney.c...@gmail.com> wrote:
Hi David,
> From: Andrew Pinski <apin...@cavium.com>
>
> On ThunderX T88 pass 1.x through 2.1 parts, broadcast TLBI
> instructions may cause the icache to become invalid if it contains
> data for a non-current ASID.
>
> This patch implements the workaround (which flushes the local icache
> when switching the mm) by using code patching.
>
> Signed-off-by: Andrew Pinski <apin...@cavium.com>
> Signed-off-by: David Daney <david.da...@cavium.com>
> ---
> arch/arm64/Kconfig | 11 +++++++++++
> arch/arm64/include/asm/cpufeature.h | 3 ++-
> arch/arm64/kernel/cpu_errata.c | 9 +++++++++
> arch/arm64/mm/proc.S | 12 ++++++++++++
> 4 files changed, 34 insertions(+), 1 deletion(-)
It would be good to update Documentation/arm64/silicon-errata.txt to
reflect the fact that there is a workaround available for this erratum.
Thanks,
M.
--
Jazz is not dead. It just smells funny.
