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Diffstat (limited to 'include/asm-x86_64/pda.h')
-rw-r--r--include/asm-x86_64/pda.h14
1 files changed, 7 insertions, 7 deletions
diff --git a/include/asm-x86_64/pda.h b/include/asm-x86_64/pda.h
index 36b766cfc4d5..bbf89aa8a1af 100644
--- a/include/asm-x86_64/pda.h
+++ b/include/asm-x86_64/pda.h
@@ -10,10 +10,8 @@
10struct x8664_pda { 10struct x8664_pda {
11 struct task_struct *pcurrent; /* Current process */ 11 struct task_struct *pcurrent; /* Current process */
12 unsigned long data_offset; /* Per cpu data offset from linker address */ 12 unsigned long data_offset; /* Per cpu data offset from linker address */
13 struct x8664_pda *me; /* Pointer to itself */
14 unsigned long kernelstack; /* top of kernel stack for current */ 13 unsigned long kernelstack; /* top of kernel stack for current */
15 unsigned long oldrsp; /* user rsp for system call */ 14 unsigned long oldrsp; /* user rsp for system call */
16 unsigned long irqrsp; /* Old rsp for interrupts. */
17 int irqcount; /* Irq nesting counter. Starts with -1 */ 15 int irqcount; /* Irq nesting counter. Starts with -1 */
18 int cpunumber; /* Logical CPU number */ 16 int cpunumber; /* Logical CPU number */
19 char *irqstackptr; /* top of irqstack */ 17 char *irqstackptr; /* top of irqstack */
@@ -22,7 +20,7 @@ struct x8664_pda {
22 struct mm_struct *active_mm; 20 struct mm_struct *active_mm;
23 int mmu_state; 21 int mmu_state;
24 unsigned apic_timer_irqs; 22 unsigned apic_timer_irqs;
25} ____cacheline_aligned; 23} ____cacheline_aligned_in_smp;
26 24
27 25
28#define IRQSTACK_ORDER 2 26#define IRQSTACK_ORDER 2
@@ -42,13 +40,14 @@ extern void __bad_pda_field(void);
42#define pda_offset(field) offsetof(struct x8664_pda, field) 40#define pda_offset(field) offsetof(struct x8664_pda, field)
43 41
44#define pda_to_op(op,field,val) do { \ 42#define pda_to_op(op,field,val) do { \
43 typedef typeof_field(struct x8664_pda, field) T__; \
45 switch (sizeof_field(struct x8664_pda, field)) { \ 44 switch (sizeof_field(struct x8664_pda, field)) { \
46case 2: \ 45case 2: \
47asm volatile(op "w %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); break; \ 46asm volatile(op "w %0,%%gs:%P1"::"ri" ((T__)val),"i"(pda_offset(field)):"memory"); break; \
48case 4: \ 47case 4: \
49asm volatile(op "l %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); break; \ 48asm volatile(op "l %0,%%gs:%P1"::"ri" ((T__)val),"i"(pda_offset(field)):"memory"); break; \
50case 8: \ 49case 8: \
51asm volatile(op "q %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); break; \ 50asm volatile(op "q %0,%%gs:%P1"::"ri" ((T__)val),"i"(pda_offset(field)):"memory"); break; \
52 default: __bad_pda_field(); \ 51 default: __bad_pda_field(); \
53 } \ 52 } \
54 } while (0) 53 } while (0)
@@ -58,7 +57,7 @@ asm volatile(op "q %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); bre
58 * Unfortunately removing them causes all hell to break lose currently. 57 * Unfortunately removing them causes all hell to break lose currently.
59 */ 58 */
60#define pda_from_op(op,field) ({ \ 59#define pda_from_op(op,field) ({ \
61 typedef typeof_field(struct x8664_pda, field) T__; T__ ret__; \ 60 typeof_field(struct x8664_pda, field) ret__; \
62 switch (sizeof_field(struct x8664_pda, field)) { \ 61 switch (sizeof_field(struct x8664_pda, field)) { \
63case 2: \ 62case 2: \
64asm volatile(op "w %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory"); break;\ 63asm volatile(op "w %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory"); break;\
@@ -75,6 +74,7 @@ asm volatile(op "q %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory"); b
75#define write_pda(field,val) pda_to_op("mov",field,val) 74#define write_pda(field,val) pda_to_op("mov",field,val)
76#define add_pda(field,val) pda_to_op("add",field,val) 75#define add_pda(field,val) pda_to_op("add",field,val)
77#define sub_pda(field,val) pda_to_op("sub",field,val) 76#define sub_pda(field,val) pda_to_op("sub",field,val)
77#define or_pda(field,val) pda_to_op("or",field,val)
78 78
79#endif 79#endif
80 80