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Re: [Xen-devel] [RFC XEN PATCH 02/16] x86_64/mm: explicitly specify the location to place the M2P table



On 12/12/16 01:26 -0700, Jan Beulich wrote:
On 12.12.16 at 03:31, <haozhong.zhang@xxxxxxxxx> wrote:
On 12/09/16 16:38 -0500, Konrad Rzeszutek Wilk wrote:
On Mon, Oct 10, 2016 at 08:32:21AM +0800, Haozhong Zhang wrote:
@@ -1427,7 +1429,7 @@ int memory_add(unsigned long spfn, unsigned long epfn, 
unsigned int pxm)
     total_pages += epfn - spfn;

     set_pdx_range(spfn, epfn);
-    ret = setup_m2p_table(&info);
+    ret = setup_m2p_table(&info, &info);

I am not sure I follow this logic. You are passing the same contents, it
is just that 'alloc_info' and 'info' are aliased together?


Similarly to patch 1, the two parameters of setup_m2p_table() are
identical for the ordinary RAM, and can be different for NVDIMM.

And the same comments as for patch 1 apply here then.

Jan


I'll add comments and clarify in commit messages for both patch 1 and
patch 2 in the next version.

Thanks,
Haozhong

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