Srikar Dronamraju 10f78fd0da powerpc/numa: Fix a regression on memoryless node 0 ... Commit e75130f20b ("powerpc/numa: Offline memoryless cpuless node 0") offlines node 0 and expects nodes to be subsequently onlined when CPUs or nodes are detected. Commit 6398eaa268 ("powerpc/numa: Prefer node id queried from vphn") skips onlining node 0 when CPUs are associated with node 0. On systems with node 0 having CPUs but no memory, this causes node 0 be marked offline. This causes issues at boot time when trying to set memory node for online CPUs while building the zonelist. 0:mon> t [link register ] c000000000400354 __build_all_zonelists+0x164/0x280 [c00000000161bda0] c0000000016533c8 node_states+0x20/0xa0 (unreliable) [c00000000161bdc0] c000000000400384 __build_all_zonelists+0x194/0x280 [c00000000161be30] c000000001041800 build_all_zonelists_init+0x4c/0x118 [c00000000161be80] c0000000004020d0 build_all_zonelists+0x190/0x1b0 [c00000000161bef0] c000000001003cf8 start_kernel+0x18c/0x6a8 [c00000000161bf90] c00000000000adb4 start_here_common+0x1c/0x3e8 0:mon> r R00 = c000000000400354 R16 = 000000000b57a0e8 R01 = c00000000161bda0 R17 = 000000000b57a6b0 R02 = c00000000161ce00 R18 = 000000000b5afee8 R03 = 0000000000000000 R19 = 000000000b6448a0 R04 = 0000000000000000 R20 = fffffffffffffffd R05 = 0000000000000000 R21 = 0000000001400000 R06 = 0000000000000000 R22 = 000000001ec00000 R07 = 0000000000000001 R23 = c000000001175580 R08 = 0000000000000000 R24 = c000000001651ed8 R09 = c0000000017e84d8 R25 = c000000001652480 R10 = 0000000000000000 R26 = c000000001175584 R11 = c000000c7fac0d10 R27 = c0000000019568d0 R12 = c000000000400180 R28 = 0000000000000000 R13 = c000000002200000 R29 = c00000000164dd78 R14 = 000000000b579f78 R30 = 0000000000000000 R15 = 000000000b57a2b8 R31 = c000000001175584 pc = c000000000400194 local_memory_node+0x24/0x80 cfar= c000000000074334 mcount+0xc/0x10 lr = c000000000400354 __build_all_zonelists+0x164/0x280 msr = 8000000002001033 cr = 44002284 ctr = c000000000400180 xer = 0000000000000001 trap = 380 dar = 0000000000001388 dsisr = c00000000161bc90 0:mon> Fix this by setting node to be online while onlining CPUs that belong to node 0. Fixes: e75130f20b ("powerpc/numa: Offline memoryless cpuless node 0") Fixes: 6398eaa268 ("powerpc/numa: Prefer node id queried from vphn") Reported-by: Milan Mohanty <milmohan@in.ibm.com> Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201127053738.10085-1-srikar@linux.vnet.ibm.com		2020-11-27 22:06:21 +11:00
..
book3s32	powerpc/32s: Setup the early hash table at all time.	2020-10-08 21:17:14 +11:00
book3s64	powerpc/64s: Trim offlined CPUs from mm_cpumasks	2020-11-27 00:10:39 +11:00
kasan	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
nohash	powerpc/8xx: Support 16k hugepages with 4k pages	2020-09-15 22:13:31 +10:00
ptdump	powerpc: Remove support for PowerPC 601	2020-10-08 21:17:13 +11:00
copro_fault.c	mm: clean up the last pieces of page fault accountings	2020-08-12 10:58:04 -07:00
dma-noncoherent.c	dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h>	2020-10-06 07:07:06 +02:00
drmem.c	pseries/drmem: don't cache node id in drmem_lmb struct	2020-09-02 11:00:21 +10:00
fault.c	mm/powerpc: use general page fault accounting	2020-08-12 10:58:03 -07:00
highmem.c	arch/kunmap_atomic: consolidate duplicate code	2020-06-04 19:06:22 -07:00
hugetlbpage.c	powerpc/8xx: Support 16k hugepages with 4k pages	2020-09-15 22:13:31 +10:00
init_32.c	Merge branch 'akpm' (patches from Andrew)	2020-08-07 11:39:33 -07:00
init_64.c	Merge branch 'fixes' into next	2020-09-14 22:57:18 +10:00
init-common.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
ioremap_32.c	powerpc/ioremap: warn on early use of ioremap()	2019-11-19 19:38:38 +11:00
ioremap_64.c	powerpc: remove __ioremap_at and __iounmap_at	2020-06-02 10:59:10 -07:00
ioremap.c	mm/memremap_pages: Introduce memremap_compat_align()	2020-02-20 16:58:55 -08:00
Makefile	powerpc/mm: Move ioremap functions out of pgtable_32/64.c	2019-08-27 13:03:35 +10:00
mem.c	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
mmap.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
mmu_context.c
mmu_decl.h	powerpc/8xx: Don't set IMMR map anymore at boot	2020-05-26 22:22:21 +10:00
numa.c	powerpc/numa: Fix a regression on memoryless node 0	2020-11-27 22:06:21 +11:00
pgtable_32.c	arch, drivers: replace for_each_membock() with for_each_mem_range()	2020-10-13 18:38:35 -07:00
pgtable_64.c	mm: remove unneeded includes of <asm/pgalloc.h>	2020-08-07 11:33:26 -07:00
pgtable-frag.c	powerpc/mm/radix: Fix PTE/PMD fragment count for early page table mappings	2020-07-20 22:57:56 +10:00
pgtable.c	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
slice.c	powerpc: Replace _ALIGN_UP() by ALIGN()	2020-05-11 23:15:15 +10:00