Messages in this thread | | | Subject | Re: [PATCH 3/3] mm: optimise pte dirty/accessed bit setting by demand based pte insertion | From | Guenter Roeck <> | Date | Wed, 5 Sep 2018 17:36:18 -0700 |
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On 09/05/2018 03:18 PM, Nicholas Piggin wrote: > On Wed, 5 Sep 2018 07:29:51 -0700 > Guenter Roeck <linux@roeck-us.net> wrote: > >> Hi, >> >> On Tue, Aug 28, 2018 at 09:20:34PM +1000, Nicholas Piggin wrote: >>> Similarly to the previous patch, this tries to optimise dirty/accessed >>> bits in ptes to avoid access costs of hardware setting them. >>> >> >> This patch results in silent nios2 boot failures, silent meaning that >> the boot stalls. >> >> ... >> Unpacking initramfs... >> Freeing initrd memory: 2168K >> workingset: timestamp_bits=30 max_order=15 bucket_order=0 >> jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc. >> random: fast init done >> random: crng init done >> >> [no further activity until the qemu session is aborted] >> >> Reverting the patch fixes the problem. Bisect log is attached. > > Thanks for bisecting it, I'll try to reproduce. Just qemu with no > obscure options? Interesting that it's hit nios2 but apparently not > other archs (yet). >
Nothing special. See https://github.com/groeck/linux-build-test/tree/master/rootfs/nios2/.
Guenter
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