From b5b43ced7a6e79d30df3232b37dc82c5d8dfa843 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Thu, 2 Sep 2010 17:10:12 -0700 Subject: [PATCH] xen: add extra pages for E820 RAM regions, even if beyond mem_end If an entire E820 RAM region is beyond mem_end, still add its pages to the extra area so that space can be used by the kernel. Signed-off-by: Jeremy Fitzhardinge --- arch/x86/xen/setup.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index eac0100..1e85e26 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -158,9 +158,8 @@ char * __init xen_memory_setup(void) xen_extra_mem_start = mem_end; for (i = 0; i < memmap.nr_entries; i++) { unsigned long long end = map[i].addr + map[i].size; + if (map[i].type == E820_RAM) { - if (map[i].addr > mem_end) - continue; if (end > mem_end) { /* Truncate region to max_mem. */ map[i].size -= end - mem_end; @@ -169,7 +168,9 @@ char * __init xen_memory_setup(void) } } else if (map[i].type != E820_RAM) xen_extra_mem_start = end; - if (map[i].size > 0) + + if ((map[i].type != E820_RAM || map[i].addr < mem_end) && + map[i].size > 0) e820_add_region(map[i].addr, map[i].size, map[i].type); } -- 2.7.4