On Tue, Mar 13, 2018 at 7:34 AM, Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote: > On 12 March 2018 at 22:21, Daniel Vacek <neelx@xxxxxxxxxx> wrote: >> On Mon, Mar 12, 2018 at 3:49 PM, Naresh Kamboju >> <naresh.kamboju@xxxxxxxxxx> wrote: >>> On 12 March 2018 at 17:56, Sudeep Holla <sudeep.holla@xxxxxxx> 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 <neelx@xxxxxxxxxx> wrote: >>>>> On Sat, Mar 3, 2018 at 1:40 AM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> 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. Thank you and Sudeep for testing. I've just sent Andrew a formal patch. > > - Naresh > >> ~~~~
