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Date: Thu, 1 Aug 2013 09:42:18 -0400 From: Tejun Heo <tj@...nel.org> To: Tang Chen <tangchen@...fujitsu.com> Cc: rjw@...k.pl, lenb@...nel.org, tglx@...utronix.de, mingo@...e.hu, hpa@...or.com, akpm@...ux-foundation.org, trenn@...e.de, yinghai@...nel.org, jiang.liu@...wei.com, wency@...fujitsu.com, laijs@...fujitsu.com, isimatu.yasuaki@...fujitsu.com, izumi.taku@...fujitsu.com, mgorman@...e.de, minchan@...nel.org, mina86@...a86.com, gong.chen@...ux.intel.com, vasilis.liaskovitis@...fitbricks.com, lwoodman@...hat.com, riel@...hat.com, jweiner@...hat.com, prarit@...hat.com, zhangyanfei@...fujitsu.com, yanghy@...fujitsu.com, x86@...nel.org, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, linux-acpi@...r.kernel.org Subject: Re: [PATCH v2 13/18] x86, numa, mem_hotplug: Skip all the regions the kernel resides in. > On Thu, Aug 01, 2013 at 03:06:35PM +0800, Tang Chen wrote: > > At early time, memblock will reserve some memory for the kernel, > such as the kernel code and data segments, initrd file, and so on=EF=BC=8C > which means the kernel resides in these memory regions. > > Even if these memory regions are hotpluggable, we should not > mark them as hotpluggable. Otherwise the kernel won't have enough > memory to boot. > > This patch finds out which memory regions the kernel resides in, > and skip them when finding all hotpluggable memory regions. > > Signed-off-by: Tang Chen <tangchen@...fujitsu.com> > Reviewed-by: Zhang Yanfei <zhangyanfei@...fujitsu.com> > --- > mm/memory=5Fhotplug.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ > 1 files changed, 45 insertions(+), 0 deletions(-) > > diff --git a/mm/memory=5Fhotplug.c b/mm/memory=5Fhotplug.c > index 326e2f2..b800c9c 100644 > --- a/mm/memory=5Fhotplug.c > +++ b/mm/memory=5Fhotplug.c > @@ -31,6 +31,7 @@ > #include <linux/firmware-map.h> > #include <linux/stop=5Fmachine.h> > #include <linux/acpi.h> > +#include <linux/memblock.h> > =20 > #include <asm/tlbflush.h> > =20 This patch is contaminated. Can you please resend? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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