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Message-ID: <20130327122856.GK17248@verge.net.au> Date: Wed, 27 Mar 2013 21:28:57 +0900 From: Simon Horman <horms@...ge.net.au> To: zhouzhouyi@...il.com Cc: kexec@...ts.infradead.org, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, vgoyal@...hat.com, yizhouzhou@....ac.cn Subject: Re: [PATCH 1/1 v1] the recommended crash memory reservation is too small for x86_64. On Mon, Mar 25, 2013 at 06:56:49PM +0800, zhouzhouyi@...il.com wrote: > From: root <root@...-Lenovo.(none)> The above line is bogus. > On Documentation/kdump/kdump.txt, section Boot into System Kernel: On x86 and x86_64, use > "crashkernel=64M@16M", but some OSes like ubuntu 12.10 use ram fs larger than 64M, so in these cases the > memory reserved for crashkernel should be at least 128M. The above lines are way to wide. Something less than 80 columns is normal. > Signed-off-by: Zhouyi Zhou <yizhouzhou@....ac.cn> > --- > Documentation/kdump/kdump.txt | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt > index 13f1aa0..1e850e0 100644 > --- a/Documentation/kdump/kdump.txt > +++ b/Documentation/kdump/kdump.txt > @@ -290,7 +290,9 @@ Boot into System Kernel > "crashkernel=64M@16M" tells the system kernel to reserve 64 MB of memory > starting at physical address 0x01000000 (16MB) for the dump-capture kernel. > > - On x86 and x86_64, use "crashkernel=64M@16M". > + On x86 and x86_64, use "crashkernel=64M@16M" (some OSes use init ram fs larger > +than 64M, for example ubuntu-12.10, use crashkernel=128M@16M instead, or dump-capture > +kernel will out of memory). I believe lines of kdmump.txt should also be 80 columns wide or less. > On ppc64, use "crashkernel=128M@32M". > > -- > 1.7.10.4 > > > _______________________________________________ > kexec mailing list > kexec@...ts.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec > -- 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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