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Date: Fri, 5 Jun 2015 09:53:54 +0800 From: Xishi Qiu <qiuxishi@...wei.com> To: "Luck, Tony" <tony.luck@...el.com> CC: Andrew Morton <akpm@...ux-foundation.org>, "nao.horiguchi@...il.com" <nao.horiguchi@...il.com>, Yinghai Lu <yinghai@...nel.org>, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, "mingo@...e.hu" <mingo@...e.hu>, Xiexiuqi <xiexiuqi@...wei.com>, Hanjun Guo <guohanjun@...wei.com>, Linux MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [RFC PATCH 02/12] mm: introduce mirror_info On 2015/6/5 0:57, Luck, Tony wrote: > +#ifdef CONFIG_MEMORY_MIRROR > +struct numa_mirror_info { > + int node; > + unsigned long start; > + unsigned long size; > +}; > + > +struct mirror_info { > + int count; > + struct numa_mirror_info info[MAX_NUMNODES]; > +}; > > Do we really need this? My patch series leaves all the mirrored memory in > the memblock allocator tagged with the MEMBLOCK_MIRROR flag. Can't > we use that information when freeing the boot memory into the runtime > free lists? > Hi Tony, I used this code for testing before, so when your patchset added to mainline, I'll rewrite it, use MEMBLOCK_MIRROR, not mirror_info. I find Andrew has added your patches to mm-tree, right? Thanks, Xishi Qiu > If we can't ... then [MAX_NUMNODES] may not be enough. We may have > more than one mirrored range on each node. Current h/w allows two ranges > per node. > > -Tony > > . > -- 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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