diff options
| -rw-r--r-- | arch/i386/kernel/paravirt.c | 8 | ||||
| -rw-r--r-- | include/asm-i386/apic.h | 15 | ||||
| -rw-r--r-- | include/asm-i386/paravirt.h | 27 |
3 files changed, 47 insertions, 3 deletions
diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c index 5a9bd3250a1a..fe82eb3adf42 100644 --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -29,6 +29,8 @@ #include <asm/time.h> #include <asm/irq.h> #include <asm/delay.h> +#include <asm/fixmap.h> +#include <asm/apic.h> /* nop stub */ static void native_nop(void) @@ -446,6 +448,12 @@ struct paravirt_ops paravirt_ops = { .io_delay = native_io_delay, .const_udelay = __const_udelay, +#ifdef CONFIG_X86_LOCAL_APIC + .apic_write = native_apic_write, + .apic_write_atomic = native_apic_write_atomic, + .apic_read = native_apic_read, +#endif + .irq_enable_sysexit = native_irq_enable_sysexit, .iret = native_iret, }; diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h index b9529578fc37..41a44319905f 100644 --- a/include/asm-i386/apic.h +++ b/include/asm-i386/apic.h @@ -37,18 +37,27 @@ extern void generic_apic_probe(void); /* * Basic functions accessing APICs. */ +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else +#define apic_write native_apic_write +#define apic_write_atomic native_apic_write_atomic +#define apic_read native_apic_read +#endif -static __inline void apic_write(unsigned long reg, unsigned long v) +static __inline fastcall void native_apic_write(unsigned long reg, + unsigned long v) { *((volatile unsigned long *)(APIC_BASE+reg)) = v; } -static __inline void apic_write_atomic(unsigned long reg, unsigned long v) +static __inline fastcall void native_apic_write_atomic(unsigned long reg, + unsigned long v) { xchg((volatile unsigned long *)(APIC_BASE+reg), v); } -static __inline unsigned long apic_read(unsigned long reg) +static __inline fastcall unsigned long native_apic_read(unsigned long reg) { return *((volatile unsigned long *)(APIC_BASE+reg)); } diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h index dd707d8c8270..e2c803fadb14 100644 --- a/include/asm-i386/paravirt.h +++ b/include/asm-i386/paravirt.h @@ -115,6 +115,12 @@ struct paravirt_ops void (fastcall *io_delay)(void); void (*const_udelay)(unsigned long loops); +#ifdef CONFIG_X86_LOCAL_APIC + void (fastcall *apic_write)(unsigned long reg, unsigned long v); + void (fastcall *apic_write_atomic)(unsigned long reg, unsigned long v); + unsigned long (fastcall *apic_read)(unsigned long reg); +#endif + /* These two are jmp to, not actually called. */ void (fastcall *irq_enable_sysexit)(void); void (fastcall *iret)(void); @@ -270,6 +276,27 @@ static inline void slow_down_io(void) { #endif } +#ifdef CONFIG_X86_LOCAL_APIC +/* + * Basic functions accessing APICs. + */ +static inline void apic_write(unsigned long reg, unsigned long v) +{ + paravirt_ops.apic_write(reg,v); +} + +static inline void apic_write_atomic(unsigned long reg, unsigned long v) +{ + paravirt_ops.apic_write_atomic(reg,v); +} + +static inline unsigned long apic_read(unsigned long reg) +{ + return paravirt_ops.apic_read(reg); +} +#endif + + /* These all sit in the .parainstructions section to tell us what to patch. */ struct paravirt_patch { u8 *instr; /* original instructions */ |