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From: Sachin Sant <sachinp@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Pekka Enberg <penberg@kernel.org>,
	Linux-Next Mailing List <linux-next@vger.kernel.org>,
	David Rientjes <rientjes@google.com>,
	Christopher Lameter <cl@linux.com>,
	linuxppc-dev@lists.ozlabs.org,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Kirill Tkhai <ktkhai@virtuozzo.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Subject: Re: [5.6.0-rc2-next-20200218/powerpc] Boot failure on POWER9
Date: Thu, 12 Mar 2020 22:21:09 +0530	[thread overview]
Message-ID: <F0FBAD4E-3257-4DFD-BFE2-4AD7D811CFB3@linux.vnet.ibm.com> (raw)
In-Reply-To: <87a74lix5p.fsf@mpe.ellerman.id.au>

> The patch below might work. Sachin can you test this? I tried faking up
> a system with a memoryless node zero but couldn't get it to even start
> booting.
> 
The patch did not help. The kernel crashed during
the boot with the same call trace.

BUG_ON() introduced with the patch was not triggered.

Thanks
-Sachin

> cheers
> 
> 
> diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
> index 9b4f5fb719e0..d1f11437f6c4 100644
> --- a/arch/powerpc/mm/mem.c
> +++ b/arch/powerpc/mm/mem.c
> @@ -282,6 +282,9 @@ void __init mem_init(void)
> 	 */
> 	BUILD_BUG_ON(MMU_PAGE_COUNT > 16);
> 
> +	BUG_ON(smp_processor_id() != boot_cpuid);
> +	set_numa_mem(local_memory_node(numa_cpu_lookup_table[boot_cpuid]));
> +
> #ifdef CONFIG_SWIOTLB
> 	/*
> 	 * Some platforms (e.g. 85xx) limit DMA-able memory way below


  reply	other threads:[~2020-03-12 16:56 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-18 10:45 [5.6.0-rc2-next-20200218/powerpc] Boot failure on POWER9 Sachin Sant
2020-02-18 10:50 ` Kirill Tkhai
2020-02-18 11:01   ` Kirill Tkhai
2020-02-18 11:35     ` Kirill Tkhai
2020-02-18 11:40     ` Sachin Sant
2020-02-18 11:55       ` Michal Hocko
2020-02-18 14:00         ` Sachin Sant
2020-02-18 14:26           ` Michal Hocko
2020-02-18 15:11             ` Sachin Sant
2020-02-18 15:24               ` Michal Hocko
2020-02-22  3:38                 ` Christopher Lameter
2020-02-24  8:58                   ` Michal Hocko
2020-02-26 18:25                     ` Christopher Lameter
2020-02-26 18:41                       ` Michal Hocko
2020-02-26 18:44                         ` Christopher Lameter
2020-02-26 19:01                           ` Michal Hocko
2020-02-26 20:31                             ` David Rientjes
2020-02-26 20:52                               ` Michal Hocko
2020-02-26 21:45                         ` Vlastimil Babka
2020-02-26 22:29                           ` Vlastimil Babka
2020-02-27 12:12                             ` Michal Hocko
2020-02-27 16:00                               ` Sachin Sant
2020-02-27 16:16                                 ` Vlastimil Babka
2020-02-27 18:26                                   ` Michal Hocko
2020-03-10 15:01                                     ` Michal Hocko
2020-03-12 12:18                                       ` Michael Ellerman
2020-03-12 16:51                                         ` Sachin Sant [this message]
2020-03-13 10:48                                           ` Michael Ellerman
2020-03-13 11:12                                             ` Srikar Dronamraju
2020-03-13 11:35                                               ` Vlastimil Babka
2020-03-14  8:10                                                 ` Sachin Sant
2020-02-27 12:02                           ` Michal Hocko
2020-02-18 11:38   ` Sachin Sant
2020-02-18 11:53     ` Kirill Tkhai

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