xen64: set up syscall and sysenter entrypoints for 64-bit
We set up entrypoints for syscall and sysenter. sysenter is only used
for 32-bit compat processes, whereas syscall can be used in by both 32
and 64-bit processes.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 48f1a7e..87d3604 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1139,6 +1139,10 @@
.iret = xen_iret,
.irq_enable_sysexit = xen_sysexit,
+#ifdef CONFIG_X86_64
+ .usergs_sysret32 = xen_sysret32,
+ .usergs_sysret64 = xen_sysret64,
+#endif
.load_tr_desc = paravirt_nop,
.set_ldt = xen_set_ldt,