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xen: make sure xen_extra_mem_start is beyond all non-RAM e820
If Xen gives us non-RAM E820 entries (dom0 only, typically), then make sure the extra RAM region is beyond them. It's OK for the extra space to grow into E820 regions, however. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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1 changed files with 2 additions and 1 deletions
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@ -167,7 +167,8 @@ char * __init xen_memory_setup(void)
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extra_pages += PFN_DOWN(end - mem_end);
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}
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}
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} else if (map[i].type != E820_RAM)
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xen_extra_mem_start = end;
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if (map[i].size > 0)
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e820_add_region(map[i].addr, map[i].size, map[i].type);
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}
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