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authorStefano Stabellini <stefano.stabellini@eu.citrix.com>2011-04-12 12:19:52 +0100
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-04-20 09:04:40 -0400
commit24bdb0b62cc82120924762ae6bc85afc8c3f2b26 (patch)
tree9f7f3ee5d73716d744eb16f287cadcd370f81e78
parentf0e615c3cb72b42191b558c130409335812621d8 (diff)
xen: do not create the extra e820 region at an addr lower than 4G
Do not add the extra e820 region at a physical address lower than 4G because it breaks e820_end_of_low_ram_pfn(). It is OK for us to move the xen_extra_mem_start up and down because this is the index of the memory that can be ballooned in/out - it is memory not available to the kernel during bootup. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-rw-r--r--arch/x86/xen/setup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index fa0269a99377..90bac0aac3a5 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -227,7 +227,7 @@ char * __init xen_memory_setup(void)
memcpy(map_raw, map, sizeof(map));
e820.nr_map = 0;
- xen_extra_mem_start = mem_end;
+ xen_extra_mem_start = max((1ULL << 32), mem_end);
for (i = 0; i < memmap.nr_entries; i++) {
unsigned long long end;