xen64: random ifdefs to mask out 32-bit only code
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 afb047e..ada2e1a 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1296,6 +1296,7 @@
static void __init xen_reserve_top(void)
{
+#ifdef CONFIG_X86_32
unsigned long top = HYPERVISOR_VIRT_START;
struct xen_platform_parameters pp;
@@ -1303,6 +1304,7 @@
top = pp.virt_start;
reserve_top_address(-top + 2 * PAGE_SIZE);
+#endif /* CONFIG_X86_32 */
}
/* First C function to be called on Xen boot */
@@ -1333,6 +1335,11 @@
machine_ops = xen_machine_ops;
+#ifdef CONFIG_X86_64
+ /* Disable until direct per-cpu data access. */
+ have_vcpu_info_placement = 0;
+#endif
+
#ifdef CONFIG_SMP
smp_ops = xen_smp_ops;
#endif
@@ -1343,9 +1350,11 @@
pgd = (pgd_t *)xen_start_info->pt_base;
+#ifdef CONFIG_X86_32
init_pg_tables_start = __pa(pgd);
init_pg_tables_end = __pa(pgd) + xen_start_info->nr_pt_frames*PAGE_SIZE;
max_pfn_mapped = (init_pg_tables_end + 512*1024) >> PAGE_SHIFT;
+#endif
init_mm.pgd = pgd; /* use the Xen pagetables to start */
@@ -1372,7 +1381,9 @@
/* set up basic CPUID stuff */
cpu_detect(&new_cpu_data);
+#ifdef CONFIG_X86_32
new_cpu_data.hard_math = 1;
+#endif
new_cpu_data.x86_capability[0] = cpuid_edx(1);
/* Poke various useful things into boot_params */
@@ -1388,5 +1399,9 @@
}
/* Start the world */
+#ifdef CONFIG_X86_32
i386_start_kernel();
+#else
+ x86_64_start_kernel((char *)&boot_params);
+#endif
}