On 12 March 2018 at 22:21, Daniel Vacek <ne...@redhat.com> wrote: > On Mon, Mar 12, 2018 at 3:49 PM, Naresh Kamboju > <naresh.kamb...@linaro.org> wrote: >> On 12 March 2018 at 17:56, Sudeep Holla <sudeep.ho...@arm.com> wrote: >>> Hi, >>> >>> I couldn't find the exact mail corresponding to the patch merged in >>> v4.16-rc5 >>> but commit 864b75f9d6b01 "mm/page_alloc: fix memmap_init_zone >>> pageblock alignment" >>> cause boot hang on my ARM64 platform. >> >> I have also noticed this problem on hi6220 Hikey - arm64. >> >> LKFT: linux-next: Hikey boot failed linux-next-20180308 >> https://bugs.linaro.org/show_bug.cgi?id=3676 >> >> - Naresh >> >>> >>> Log: >>> [ 0.000000] NUMA: No NUMA configuration found >>> [ 0.000000] NUMA: Faking a node at [mem >>> 0x0000000000000000-0x00000009ffffffff] >>> [ 0.000000] NUMA: NODE_DATA [mem 0x9fffcb480-0x9fffccf7f] >>> [ 0.000000] Zone ranges: >>> [ 0.000000] DMA32 [mem 0x0000000080000000-0x00000000ffffffff] >>> [ 0.000000] Normal [mem 0x0000000100000000-0x00000009ffffffff] >>> [ 0.000000] Movable zone start for each node >>> [ 0.000000] Early memory node ranges >>> [ 0.000000] node 0: [mem 0x0000000080000000-0x00000000f8f9afff] >>> [ 0.000000] node 0: [mem 0x00000000f8f9b000-0x00000000f908ffff] >>> [ 0.000000] node 0: [mem 0x00000000f9090000-0x00000000f914ffff] >>> [ 0.000000] node 0: [mem 0x00000000f9150000-0x00000000f920ffff] >>> [ 0.000000] node 0: [mem 0x00000000f9210000-0x00000000f922ffff] >>> [ 0.000000] node 0: [mem 0x00000000f9230000-0x00000000f95bffff] >>> [ 0.000000] node 0: [mem 0x00000000f95c0000-0x00000000fe58ffff] >>> [ 0.000000] node 0: [mem 0x00000000fe590000-0x00000000fe5cffff] >>> [ 0.000000] node 0: [mem 0x00000000fe5d0000-0x00000000fe5dffff] >>> [ 0.000000] node 0: [mem 0x00000000fe5e0000-0x00000000fe62ffff] >>> [ 0.000000] node 0: [mem 0x00000000fe630000-0x00000000feffffff] >>> [ 0.000000] node 0: [mem 0x0000000880000000-0x00000009ffffffff] >>> [ 0.000000] Initmem setup node 0 [mem >>> 0x0000000080000000-0x00000009ffffffff] >>> >>> On Sat, Mar 3, 2018 at 1:08 AM, Daniel Vacek <ne...@redhat.com> wrote: >>>> On Sat, Mar 3, 2018 at 1:40 AM, Andrew Morton <a...@linux-foundation.org> >>>> wrote: >>>>> >>>>> This makes me wonder whether a -stable backport is really needed... >>>> >>>> For some machines it definitely is. Won't hurt either, IMHO. >>>> >>>> --nX > > Hmm, does it step back perhaps? > > Can you check if below cures the boot hang? > > --nX > > ~~~~ > neelx@metal:~/nX/src/linux$ git diff > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 3d974cb2a1a1..415571120bbd 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -5365,8 +5365,10 @@ void __meminit memmap_init_zone(unsigned long > size, int nid, unsigned long zone, > * the valid region but still depends on correct page > * metadata. > */ > - pfn = (memblock_next_valid_pfn(pfn, end_pfn) & > + unsigned long next_pfn; > + next_pfn = (memblock_next_valid_pfn(pfn, end_pfn) & > ~(pageblock_nr_pages-1)) - 1; > + pfn = max(next_pfn, pfn); > #endif > continue; > }
After applying this patch on linux-next the boot hang problem resolved. Now the hi6220-hikey is booting successfully. Thank you. - Naresh > ~~~~
