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Diffstat (limited to 'include/asm-x86/paravirt.h')
-rw-r--r--include/asm-x86/paravirt.h75
1 files changed, 65 insertions, 10 deletions
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index ef5e8ec6a6a..aec9767836b 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -205,7 +205,6 @@ struct pv_apic_ops {
* these shouldn't be in this interface.
*/
void (*apic_write)(unsigned long reg, u32 v);
- void (*apic_write_atomic)(unsigned long reg, u32 v);
u32 (*apic_read)(unsigned long reg);
void (*setup_boot_clock)(void);
void (*setup_secondary_clock)(void);
@@ -326,6 +325,15 @@ struct pv_mmu_ops {
unsigned long phys, pgprot_t flags);
};
+struct raw_spinlock;
+struct pv_lock_ops {
+ int (*spin_is_locked)(struct raw_spinlock *lock);
+ int (*spin_is_contended)(struct raw_spinlock *lock);
+ void (*spin_lock)(struct raw_spinlock *lock);
+ int (*spin_trylock)(struct raw_spinlock *lock);
+ void (*spin_unlock)(struct raw_spinlock *lock);
+};
+
/* This contains all the paravirt structures: we get a convenient
* number for each function using the offset which we use to indicate
* what to patch. */
@@ -336,6 +344,7 @@ struct paravirt_patch_template {
struct pv_irq_ops pv_irq_ops;
struct pv_apic_ops pv_apic_ops;
struct pv_mmu_ops pv_mmu_ops;
+ struct pv_lock_ops pv_lock_ops;
};
extern struct pv_info pv_info;
@@ -345,6 +354,7 @@ extern struct pv_cpu_ops pv_cpu_ops;
extern struct pv_irq_ops pv_irq_ops;
extern struct pv_apic_ops pv_apic_ops;
extern struct pv_mmu_ops pv_mmu_ops;
+extern struct pv_lock_ops pv_lock_ops;
#define PARAVIRT_PATCH(x) \
(offsetof(struct paravirt_patch_template, x) / sizeof(void *))
@@ -896,11 +906,6 @@ static inline void apic_write(unsigned long reg, u32 v)
PVOP_VCALL2(pv_apic_ops.apic_write, reg, v);
}
-static inline void apic_write_atomic(unsigned long reg, u32 v)
-{
- PVOP_VCALL2(pv_apic_ops.apic_write_atomic, reg, v);
-}
-
static inline u32 apic_read(unsigned long reg)
{
return PVOP_CALL1(unsigned long, pv_apic_ops.apic_read, reg);
@@ -1374,6 +1379,37 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
void _paravirt_nop(void);
#define paravirt_nop ((void *)_paravirt_nop)
+void paravirt_use_bytelocks(void);
+
+#ifdef CONFIG_SMP
+
+static inline int __raw_spin_is_locked(struct raw_spinlock *lock)
+{
+ return PVOP_CALL1(int, pv_lock_ops.spin_is_locked, lock);
+}
+
+static inline int __raw_spin_is_contended(struct raw_spinlock *lock)
+{
+ return PVOP_CALL1(int, pv_lock_ops.spin_is_contended, lock);
+}
+
+static __always_inline void __raw_spin_lock(struct raw_spinlock *lock)
+{
+ PVOP_VCALL1(pv_lock_ops.spin_lock, lock);
+}
+
+static __always_inline int __raw_spin_trylock(struct raw_spinlock *lock)
+{
+ return PVOP_CALL1(int, pv_lock_ops.spin_trylock, lock);
+}
+
+static __always_inline void __raw_spin_unlock(struct raw_spinlock *lock)
+{
+ PVOP_VCALL1(pv_lock_ops.spin_unlock, lock);
+}
+
+#endif
+
/* These all sit in the .parainstructions section to tell us what to patch. */
struct paravirt_patch_site {
u8 *instr; /* original instructions */
@@ -1396,8 +1432,8 @@ extern struct paravirt_patch_site __parainstructions[],
* caller saved registers but the argument parameter */
#define PV_SAVE_REGS "pushq %%rdi;"
#define PV_RESTORE_REGS "popq %%rdi;"
-#define PV_EXTRA_CLOBBERS EXTRA_CLOBBERS, "rcx" , "rdx"
-#define PV_VEXTRA_CLOBBERS EXTRA_CLOBBERS, "rdi", "rcx" , "rdx"
+#define PV_EXTRA_CLOBBERS EXTRA_CLOBBERS, "rcx" , "rdx", "rsi"
+#define PV_VEXTRA_CLOBBERS EXTRA_CLOBBERS, "rdi", "rcx" , "rdx", "rsi"
#define PV_FLAGS_ARG "D"
#endif
@@ -1458,6 +1494,7 @@ static inline unsigned long __raw_local_irq_save(void)
return f;
}
+
/* Make sure as little as possible of this mess escapes. */
#undef PARAVIRT_CALL
#undef __PVOP_CALL
@@ -1489,8 +1526,26 @@ static inline unsigned long __raw_local_irq_save(void)
#ifdef CONFIG_X86_64
-#define PV_SAVE_REGS pushq %rax; pushq %rdi; pushq %rcx; pushq %rdx
-#define PV_RESTORE_REGS popq %rdx; popq %rcx; popq %rdi; popq %rax
+#define PV_SAVE_REGS \
+ push %rax; \
+ push %rcx; \
+ push %rdx; \
+ push %rsi; \
+ push %rdi; \
+ push %r8; \
+ push %r9; \
+ push %r10; \
+ push %r11
+#define PV_RESTORE_REGS \
+ pop %r11; \
+ pop %r10; \
+ pop %r9; \
+ pop %r8; \
+ pop %rdi; \
+ pop %rsi; \
+ pop %rdx; \
+ pop %rcx; \
+ pop %rax
#define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 8)
#define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .quad, 8)
#define PARA_INDIRECT(addr) *addr(%rip)