x86: Introduce GDT_ENTRY_INIT(), initialize bad_bios_desc statically

Fully initialize bad_bios_desc statically instead of doing some
fields statically and some dynamically.

Suggested-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090809080350.GA4765@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c
index bd035e3d3550..fc83783c3a96 100644
--- a/drivers/pnp/pnpbios/bioscalls.c
+++ b/drivers/pnp/pnpbios/bioscalls.c
@@ -60,7 +60,8 @@ do { \
         set_desc_limit(&gdt[(selname) >> 3], (size) - 1); \
 } while(0)
 
-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, 0, 0);
+static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
+                        (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
 
 /*
  * At some point we want to use this stack frame pointer to unwind
@@ -476,8 +477,6 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header)
         pnp_bios_callpoint.offset = header->fields.pm16offset;
         pnp_bios_callpoint.segment = PNP_CS16;
 
-        set_desc_base(&bad_bios_desc, (unsigned long)__va(0x40UL << 4));
-        set_desc_limit(&bad_bios_desc, 4095 - (0x40 << 4));
         for_each_possible_cpu(i) {
                 struct desc_struct *gdt = get_cpu_gdt_table(i);
                 if (!gdt)