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
..
boot	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
configs	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
crypto	crypto: powerpc/crc-vpmsum_test - Fix sparse endianness warning	2020-09-04 17:57:15 +10:00
include	powerpc/64s: Trim offlined CPUs from mm_cpumasks	2020-11-27 00:10:39 +11:00
kernel	powerpc fixes for CVE-2020-4788	2020-11-23 21:16:27 +11:00
kexec	arch, drivers: replace for_each_membock() with for_each_mem_range()	2020-10-13 18:38:35 -07:00
kvm	KVM: PPC: Book3S HV: XIVE: Fix possible oops when accessing ESB page	2020-11-16 23:28:30 +11:00
lib	powerpc/64s: flush L1D after user accesses	2020-11-19 23:47:18 +11:00
math-emu
mm	powerpc/numa: Fix a regression on memoryless node 0	2020-11-27 22:06:21 +11:00
net	bpf, powerpc: Fix misuse of fallthrough in bpf_jit_comp()	2020-09-29 16:39:11 +02:00
oprofile	powerpc/oprofile: fix spelling mistake "contex" -> "context"	2020-08-25 01:31:33 +10:00
perf	powerpc/hv-gpci: Add sysfs files inside hv-gpci device to show cpumask	2020-10-07 22:34:49 +11:00
platforms	powerpc/64s: Trim offlined CPUs from mm_cpumasks	2020-11-27 00:10:39 +11:00
purgatory	powerpc/kexec_file: Enable early kernel OPAL calls	2020-07-29 23:47:55 +10:00
sysdev	powerpc/xive: Make debug routines static	2020-09-18 20:05:25 +10:00
tools	powerpc/tools: Remove 90 line limit in checkpatch script	2020-09-08 22:57:11 +10:00
xmon	powerpc/watchpoint: Add hw_len wherever missing	2020-09-15 22:13:20 +10:00
Kbuild
Kconfig	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
Kconfig.debug	powerpc: Remove Xilinx PPC405/PPC440 support	2020-05-28 23:24:34 +10:00
Makefile	powerpc: Drop -me200 addition to build flags	2020-11-17 22:05:33 +11:00
Makefile.postlink	powerpc: unrel_branch_check.sh: use nm to find symbol value	2020-09-02 11:00:22 +10:00