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-rw-r--r--arch/ia64/kernel/head.S43
1 files changed, 42 insertions, 1 deletions
diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index ddeab4e36fd5..41c712917ff7 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -26,11 +26,14 @@
#include <asm/mmu_context.h>
#include <asm/asm-offsets.h>
#include <asm/pal.h>
+#include <asm/paravirt.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
#include <asm/system.h>
#include <asm/mca_asm.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
#ifdef CONFIG_HOTPLUG_CPU
#define SAL_PSR_BITS_TO_SET \
@@ -367,6 +370,44 @@ start_ap:
;;
(isBP) st8 [r2]=r28 // save the address of the boot param area passed by the bootloader
+#ifdef CONFIG_PARAVIRT
+
+ movl r14=hypervisor_setup_hooks
+ movl r15=hypervisor_type
+ mov r16=num_hypervisor_hooks
+ ;;
+ ld8 r2=[r15]
+ ;;
+ cmp.ltu p7,p0=r2,r16 // array size check
+ shladd r8=r2,3,r14
+ ;;
+(p7) ld8 r9=[r8]
+ ;;
+(p7) mov b1=r9
+(p7) cmp.ne.unc p7,p0=r9,r0 // no actual branch to NULL
+ ;;
+(p7) br.call.sptk.many rp=b1
+
+ __INITDATA
+
+default_setup_hook = 0 // Currently nothing needs to be done.
+
+ .weak xen_setup_hook
+
+ .global hypervisor_type
+hypervisor_type:
+ data8 PARAVIRT_HYPERVISOR_TYPE_DEFAULT
+
+ // must have the same order with PARAVIRT_HYPERVISOR_TYPE_xxx
+
+hypervisor_setup_hooks:
+ data8 default_setup_hook
+ data8 xen_setup_hook
+num_hypervisor_hooks = (. - hypervisor_setup_hooks) / 8
+ .previous
+
+#endif
+
#ifdef CONFIG_SMP
(isAP) br.call.sptk.many rp=start_secondary
.ret0:
@@ -1082,7 +1123,7 @@ SET_REG(b5);
* p15 - used to track flag status.
*
* If you patch this code to use more registers, do not forget to update
- * the clobber lists for spin_lock() in include/asm-ia64/spinlock.h.
+ * the clobber lists for spin_lock() in arch/ia64/include/asm/spinlock.h.
*/
#if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
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