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x86: Introduce GDT_ENTRY_INIT(), initialize bad_bios_desc statically

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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>
This commit is contained in:
Akinobu Mita
2009-08-09 17:03:52 +09:00
committed by Ingo Molnar
parent 4c711576b9
commit c7425314c7
2 changed files with 11 additions and 13 deletions
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5
drivers/pnp/pnpbios/bioscalls.c
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@@ -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)