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authorRusty Russell <rusty@rustcorp.com.au>2007-05-02 13:27:13 -0400
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 13:27:13 -0400
commita75c54f933bd8db9f4a609bd128663c179b3e6a1 (patch)
tree8b7dd866185bec34146eb537f057b6b496c78443 /arch/i386/kernel/doublefault.c
parent82d1bb725e128c97b362a4b33fcbfff08fdaaa5a (diff)
[PATCH] i386: i386 separate hardware-defined TSS from Linux additions
On Thu, 2007-03-29 at 13:16 +0200, Andi Kleen wrote: > Please clean it up properly with two structs. Not sure about this, now I've done it. Running it here. If you like it, I can do x86-64 as well. == lguest defines its own TSS struct because the "struct tss_struct" contains linux-specific additions. Andi asked me to split the struct in processor.h. Unfortunately it makes usage a little awkward. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/i386/kernel/doublefault.c')
-rw-r--r--arch/i386/kernel/doublefault.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/arch/i386/kernel/doublefault.c b/arch/i386/kernel/doublefault.c
index b4d14c2eb345..265c5597efb0 100644
--- a/arch/i386/kernel/doublefault.c
+++ b/arch/i386/kernel/doublefault.c
@@ -33,7 +33,7 @@ static void doublefault_fn(void)
33 printk("double fault, tss at %08lx\n", tss); 33 printk("double fault, tss at %08lx\n", tss);
34 34
35 if (ptr_ok(tss)) { 35 if (ptr_ok(tss)) {
36 struct tss_struct *t = (struct tss_struct *)tss; 36 struct i386_hw_tss *t = (struct i386_hw_tss *)tss;
37 37
38 printk("eip = %08lx, esp = %08lx\n", t->eip, t->esp); 38 printk("eip = %08lx, esp = %08lx\n", t->eip, t->esp);
39 39
@@ -49,18 +49,21 @@ static void doublefault_fn(void)
49} 49}
50 50
51struct tss_struct doublefault_tss __cacheline_aligned = { 51struct tss_struct doublefault_tss __cacheline_aligned = {
52 .esp0 = STACK_START, 52 .x86_tss = {
53 .ss0 = __KERNEL_DS, 53 .esp0 = STACK_START,
54 .ldt = 0, 54 .ss0 = __KERNEL_DS,
55 .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, 55 .ldt = 0,
56 .io_bitmap_base = INVALID_IO_BITMAP_OFFSET,
56 57
57 .eip = (unsigned long) doublefault_fn, 58 .eip = (unsigned long) doublefault_fn,
58 .eflags = X86_EFLAGS_SF | 0x2, /* 0x2 bit is always set */ 59 /* 0x2 bit is always set */
59 .esp = STACK_START, 60 .eflags = X86_EFLAGS_SF | 0x2,
60 .es = __USER_DS, 61 .esp = STACK_START,
61 .cs = __KERNEL_CS, 62 .es = __USER_DS,
62 .ss = __KERNEL_DS, 63 .cs = __KERNEL_CS,
63 .ds = __USER_DS, 64 .ss = __KERNEL_DS,
65 .ds = __USER_DS,
64 66
65 .__cr3 = __pa(swapper_pg_dir) 67 .__cr3 = __pa(swapper_pg_dir)
68 }
66}; 69};