From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: multicalls.c warning in xen_mc_flush
Date: Tue, 22 May 2012 14:36:59 -0400
Message-ID: <20120522183659.GA24324@phenom.dumpdata.com>
References: <CAJ75kXYXvVA3Xd9evNkvkFL+JuGLcFG=DwHbXAxsLsZ0pKk1Sg@mail.gmail.com>
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To: William Dauchy <wdauchy@gmail.com>
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On Tue, May 22, 2012 at 03:04:17PM +0200, William Dauchy wrote:
> Hello,
> 
> I'm getting a call trace when booting a dom0 v3.3.7 (x86_32) under xen 4.1.2.
> It is about multicalls.c:129. I tried with MC_DEBUG = 1 but it appears
> that b->mcidx = 1 when getting this call trace.
> Does anybody have any clue?

Yes. Do you have CONFIG_NUMA enabled? If you disable it, do the messages
disappear?

> 
> 
> WARNING: at /arch/x86/xen/multicalls.c:129 xen_mc_flush+0x12a/0x140()
> Hardware name: C6100
> Modules linked in:
> Pid: 0, comm: swapper Not tainted 3.3.7-i386 #125
> Call Trace:
>  [<c102f34d>] warn_slowpath_common+0x6d/0xa0
>  [<c100384a>] ? xen_mc_flush+0x12a/0x140
>  [<c100384a>] ? xen_mc_flush+0x12a/0x140
>  [<c102f39d>] warn_slowpath_null+0x1d/0x20
>  [<c100384a>] xen_mc_flush+0x12a/0x140
>  [<c1006035>] xen_set_pmd_hyper+0x75/0x80
>  [<c102c4ee>] set_pmd_pfn+0x9e/0xf0
>  [<c14e68c7>] init_alloc_remap+0x1c3/0x237
>  [<c14e6315>] x86_numa_init+0x378/0x691
>  [<c1004af6>] ? xen_set_fixmap+0xa6/0x160
>  [<c14e6639>] initmem_init+0xb/0xd6
>  [<c14dea61>] ? early_acpi_boot_init+0x6e/0xbe
>  [<c14dede0>] ? acpi_boot_table_init+0x36/0x7d
>  [<c14d7796>] setup_arch+0xb30/0xbe7
>  [<c14d1566>] start_kernel+0x76/0x2ef
>  [<c14d10ba>] i386_start_kernel+0xa9/0xb0
>  [<c14d4a66>] xen_start_kernel+0x546/0x54e
> 
> 
> Regards,
> -- 
> William
> 
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