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Diffstat (limited to 'arch/x86/xen/setup.c')
-rw-r--r--arch/x86/xen/setup.c28
1 files changed, 25 insertions, 3 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 94eac5c85cdc..8f3eea6b80c5 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -313,6 +313,17 @@ static void xen_align_and_add_e820_region(u64 start, u64 size, int type)
e820_add_region(start, end - start, type);
}
+void xen_ignore_unusable(struct e820entry *list, size_t map_size)
+{
+ struct e820entry *entry;
+ unsigned int i;
+
+ for (i = 0, entry = list; i < map_size; i++, entry++) {
+ if (entry->type == E820_UNUSABLE)
+ entry->type = E820_RAM;
+ }
+}
+
/**
* machine_specific_memory_setup - Hook for machine specific memory setup.
**/
@@ -353,6 +364,17 @@ char * __init xen_memory_setup(void)
}
BUG_ON(rc);
+ /*
+ * Xen won't allow a 1:1 mapping to be created to UNUSABLE
+ * regions, so if we're using the machine memory map leave the
+ * region as RAM as it is in the pseudo-physical map.
+ *
+ * UNUSABLE regions in domUs are not handled and will need
+ * a patch in the future.
+ */
+ if (xen_initial_domain())
+ xen_ignore_unusable(map, memmap.nr_entries);
+
/* Make sure the Xen-supplied memory map is well-ordered. */
sanitize_e820_map(map, memmap.nr_entries, &memmap.nr_entries);
@@ -475,7 +497,7 @@ static void __init fiddle_vdso(void)
#endif
}
-static int __cpuinit register_callback(unsigned type, const void *func)
+static int register_callback(unsigned type, const void *func)
{
struct callback_register callback = {
.type = type,
@@ -486,7 +508,7 @@ static int __cpuinit register_callback(unsigned type, const void *func)
return HYPERVISOR_callback_op(CALLBACKOP_register, &callback);
}
-void __cpuinit xen_enable_sysenter(void)
+void xen_enable_sysenter(void)
{
int ret;
unsigned sysenter_feature;
@@ -505,7 +527,7 @@ void __cpuinit xen_enable_sysenter(void)
setup_clear_cpu_cap(sysenter_feature);
}
-void __cpuinit xen_enable_syscall(void)
+void xen_enable_syscall(void)
{
#ifdef CONFIG_X86_64
int ret;