aboutsummaryrefslogtreecommitdiffstats
path: root/arch/i386/kernel/doublefault.c
diff options
context:
space:
mode:
authorZachary Amsden <zach@vmware.com>2005-09-03 18:56:38 -0400
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 03:06:11 -0400
commit4d37e7e3fd851428dede4d05d3e69d03795a744a (patch)
treef830928a0baf81f462bc9176dacbaad2dac2bb65 /arch/i386/kernel/doublefault.c
parent245067d1674d451855692fcd4647daf9fd47f82d (diff)
[PATCH] i386: inline assembler: cleanup and encapsulate descriptor and task register management
i386 inline assembler cleanup. This change encapsulates descriptor and task register management. Also, it is possible to improve assembler generation in two cases; savesegment may store the value in a register instead of a memory location, which allows GCC to optimize stack variables into registers, and MOV MEM, SEG is always a 16-bit write to memory, making the casting in math-emu unnecessary. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/doublefault.c')
-rw-r--r--arch/i386/kernel/doublefault.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/i386/kernel/doublefault.c b/arch/i386/kernel/doublefault.c
index 789af3e9fb1f..5edb1d379add 100644
--- a/arch/i386/kernel/doublefault.c
+++ b/arch/i386/kernel/doublefault.c
@@ -20,7 +20,7 @@ static void doublefault_fn(void)
20 struct Xgt_desc_struct gdt_desc = {0, 0}; 20 struct Xgt_desc_struct gdt_desc = {0, 0};
21 unsigned long gdt, tss; 21 unsigned long gdt, tss;
22 22
23 __asm__ __volatile__("sgdt %0": "=m" (gdt_desc): :"memory"); 23 store_gdt(&gdt_desc);
24 gdt = gdt_desc.address; 24 gdt = gdt_desc.address;
25 25
26 printk("double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size); 26 printk("double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size);