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-rw-r--r--arch/x86/xen/setup.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index b5a7f928234b..a8a66a50d446 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -179,8 +179,13 @@ char * __init xen_memory_setup(void)
e820.nr_map = 0;
xen_extra_mem_start = mem_end;
for (i = 0; i < memmap.nr_entries; i++) {
- unsigned long long end = map[i].addr + map[i].size;
+ unsigned long long end;
+ /* Guard against non-page aligned E820 entries. */
+ if (map[i].type == E820_RAM)
+ map[i].size -= (map[i].size + map[i].addr) % PAGE_SIZE;
+
+ end = map[i].addr + map[i].size;
if (map[i].type == E820_RAM && end > mem_end) {
/* RAM off the end - may be partially included */
u64 delta = min(map[i].size, end - mem_end);
@@ -350,6 +355,7 @@ void __init xen_arch_setup(void)
boot_cpu_data.hlt_works_ok = 1;
#endif
pm_idle = default_idle;
+ boot_option_idle_override = IDLE_HALT;
fiddle_vdso();
}