On 4/21/2016 1:49 AM, Catalin Marinas wrote:
On Wed, Apr 20, 2016 at 04:01:39PM -0700, Shi, Yang wrote:
When I enable memory comact via
# echo 1 > /proc/sys/vm/compact_memory
I got the below WARNING:
set_pte_at: racy dirty state clearing: 0x0068000099371bd3 ->
0x0068000099371fd3
------------[ cut here ]------------
WARNING: CPU: 5 PID: 294 at ./arch/arm64/include/asm/pgtable.h:227
ptep_set_access_flags+0x138/0x1b8
Modules linked in:
Do you have this patch applied:
http://article.gmane.org/gmane.linux.ports.arm.kernel/492239
It's also queued into -next as commit 66dbd6e61a52.
No, but I just applied it, it works.
Thanks,
Yang
My kernel has ARM64_HW_AFDBM enabled, but LS2085 is not ARMv8.1.
The code shows it just check if ARM64_HW_AFDBM is enabled or not, but
doesn't check if the CPU really has such capability.
So, it might be better to have the capability checked runtime?
The warnings are there to spot any incorrect uses of the pte accessors
even before you run on AF/DBM-capable hardware.
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