Thank you Jiri, I am studying it. Pavel On 8/24/18 3:44 AM, Jiri Slaby wrote: > pasha.tatashin@xxxxxxxxxx -> pavel.tatashin@xxxxxxxxxxxxx > > due to > 550 5.1.1 Unknown recipient address. > > > On 08/24/2018, 09:32 AM, Jiri Slaby wrote: >> On 06/19/2018, 09:56 PM, Pavel Tatashin wrote: >>> On Tue, Jun 19, 2018 at 9:50 AM Pavel Tatashin >>> <pasha.tatashin@xxxxxxxxxx> wrote: >>>> >>>> On Sat, Jun 16, 2018 at 4:04 AM Jiri Slaby <jslaby@xxxxxxx> wrote: >>>>> >>>>> On 11/21/2017, 08:24 AM, Michal Hocko wrote: >>>>>> On Thu 16-11-17 20:46:01, Pavel Tatashin wrote: >>>>>>> There is no need to have ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT, >>>>>>> as all the page initialization code is in common code. >>>>>>> >>>>>>> Also, there is no need to depend on MEMORY_HOTPLUG, as initialization code >>>>>>> does not really use hotplug memory functionality. So, we can remove this >>>>>>> requirement as well. >>>>>>> >>>>>>> This patch allows to use deferred struct page initialization on all >>>>>>> platforms with memblock allocator. >>>>>>> >>>>>>> Tested on x86, arm64, and sparc. Also, verified that code compiles on >>>>>>> PPC with CONFIG_MEMORY_HOTPLUG disabled. >>>>>> >>>>>> There is slight risk that we will encounter corner cases on some >>>>>> architectures with weird memory layout/topology >>>>> >>>>> Which x86_32-pae seems to be. Many bad page state errors are emitted >>>>> during boot when this patch is applied: >>>> >>>> Hi Jiri, >>>> >>>> Thank you for reporting this bug. >>>> >>>> Because 32-bit systems are limited in the maximum amount of physical >>>> memory, they don't need deferred struct pages. So, we can add depends >>>> on 64BIT to DEFERRED_STRUCT_PAGE_INIT in mm/Kconfig. >>>> >>>> However, before we do this, I want to try reproducing this problem and >>>> root cause it, as it might expose a general problem that is not 32-bit >>>> specific. >>> >>> Hi Jiri, >>> >>> Could you please attach your config and full qemu arguments that you >>> used to reproduce this bug. >> >> Hi, >> >> I seem I never replied. Attaching .config and the qemu cmdline: >> $ qemu-kvm -m 2000 -hda /dev/null -kernel bzImage >> >> "-m 2000" is important to reproduce. >> >> If I disable CONFIG_DEFERRED_STRUCT_PAGE_INIT (which the patch allowed >> to enable), the error goes away, of course. >> >> thanks, >> > >
