search for: __raw_local_irq_save

Hi folks, Here is the result of the latest work on the pvops front, after the x86 arch merge. From the functionality point of view, almost nothing was changed, except for proper vsmp support - which was discussed, but not implemented before - and the introduction of smp_ops in x86_64, which eased the merging of the smp header. Speaking of the merge, a significant part (although not majority) of

Hi folks, Here is the result of the latest work on the pvops front, after the x86 arch merge. From the functionality point of view, almost nothing was changed, except for proper vsmp support - which was discussed, but not implemented before - and the introduction of smp_ops in x86_64, which eased the merging of the smp header. Speaking of the merge, a significant part (although not majority) of

...-#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) static inline void raw_local_irq_restore(unsigned long flags) { @@ -100,8 +107,6 @@ static inline unsigned long __raw_local_ return flags; } -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) static inline int raw_irqs_disabled(void) { @@ -128,6 +133,7 @@ static inline void halt(void) __asm__ __volatile__("hlt": : :"memory"); } +#endif /* CONFIG_PARAVIRT */ #else /* __ASSEMBLY__: */ # ifdef CONFIG_TRACE_IRQFLAGS # define TRACE_IRQS_ON cal...

...-#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) static inline void raw_local_irq_restore(unsigned long flags) { @@ -100,8 +107,6 @@ static inline unsigned long __raw_local_ return flags; } -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) static inline int raw_irqs_disabled(void) { @@ -128,6 +133,7 @@ static inline void halt(void) __asm__ __volatile__("hlt": : :"memory"); } +#endif /* CONFIG_PARAVIRT */ #else /* __ASSEMBLY__: */ # ifdef CONFIG_TRACE_IRQFLAGS # define TRACE_IRQS_ON cal...

Paravirt ops is currently only capable of either replacing a lot of Linux internal code or none at all. The are users that don't need all of the possibilities pv-ops delivers though. On KVM for example we're perfectly fine not using the PV MMU, thus not touching any MMU code. That way we don't have to improve pv-ops to become fast, we just don't compile the MMU parts in! This

Paravirt ops is currently only capable of either replacing a lot of Linux internal code or none at all. The are users that don't need all of the possibilities pv-ops delivers though. On KVM for example we're perfectly fine not using the PV MMU, thus not touching any MMU code. That way we don't have to improve pv-ops to become fast, we just don't compile the MMU parts in! This

...ine void raw_local_irq_restore(unsigned long flags) +{ + return paravirt_ops.restore_fl(flags); +} + +static inline void raw_local_irq_disable(void) +{ + paravirt_ops.irq_disable(); +} + +static inline void raw_local_irq_enable(void) +{ + paravirt_ops.irq_enable(); +} + +static inline unsigned long __raw_local_irq_save(void) +{ + return paravirt_ops.save_fl_irq_disable(); +} + +static inline void raw_safe_halt(void) +{ + paravirt_ops.safe_halt(); +} + +static inline void halt(void) +{ + paravirt_ops.safe_halt(); +} +#define wbinvd() paravirt_ops.wbinvd() + +#define get_kernel_rpl() (paravirt_ops.kernel_rpl) + +#...

...quot;); -} static inline int raw_irqs_disabled_flags(unsigned long flags) { @@ -76,18 +26,6 @@ static inline int raw_irqs_disabled(void unsigned long flags = __raw_local_save_flags(); return raw_irqs_disabled_flags(flags); -} - -/* - * For spinlocks, etc: - */ -static inline unsigned long __raw_local_irq_save(void) -{ - unsigned long flags = __raw_local_save_flags(); - - raw_local_irq_disable(); - - return flags; } #define raw_local_irq_save(flags) \ =================================================================== --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h @@ -20,6 +20,...

...quot;); -} static inline int raw_irqs_disabled_flags(unsigned long flags) { @@ -76,18 +26,6 @@ static inline int raw_irqs_disabled(void unsigned long flags = __raw_local_save_flags(); return raw_irqs_disabled_flags(flags); -} - -/* - * For spinlocks, etc: - */ -static inline unsigned long __raw_local_irq_save(void) -{ - unsigned long flags = __raw_local_save_flags(); - - raw_local_irq_disable(); - - return flags; } #define raw_local_irq_save(flags) \ =================================================================== --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h @@ -20,6 +20,...

...INTERRUPT_RETURN iret +#define GET_CR0_INTO_EAX movl %cr0, %eax +#endif /* __ASSEMBLY__ */ +#endif /* CONFIG_PARAVIRT */ + +#ifndef __ASSEMBLY__ +#define raw_local_save_flags(flags) \ + do { (flags) = __raw_local_save_flags(); } while (0) + #define raw_local_irq_save(flags) \ do { (flags) = __raw_local_irq_save(); } while (0) +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1 << 9)); +} + +static inline int raw_irqs_disabled(void) +{ + unsigned long flags = __raw_local_save_flags(); + + return raw_irqs_disabled_flags(flags); +} #endif /* __ASSEMBLY__ */...

...INTERRUPT_RETURN iret +#define GET_CR0_INTO_EAX movl %cr0, %eax +#endif /* __ASSEMBLY__ */ +#endif /* CONFIG_PARAVIRT */ + +#ifndef __ASSEMBLY__ +#define raw_local_save_flags(flags) \ + do { (flags) = __raw_local_save_flags(); } while (0) + #define raw_local_irq_save(flags) \ do { (flags) = __raw_local_irq_save(); } while (0) +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1 << 9)); +} + +static inline int raw_irqs_disabled(void) +{ + unsigned long flags = __raw_local_save_flags(); + + return raw_irqs_disabled_flags(flags); +} #endif /* __ASSEMBLY__ */...

This series contain fixes to make the paravirt_ops code compile and boot on x86_64. This is a follow-up for the previous series from Glauber.

This series contain fixes to make the paravirt_ops code compile and boot on x86_64. This is a follow-up for the previous series from Glauber.

The following patches introduce the core infrastructure needed to paravirtualize the 32-bit x86 Linux kernel. This is done by moving virtualization sensitive insn's or code paths to a function table, paravirt_ops. This structure can be populated with hypervisor specific calls or native stubs and currently support running on bare metal, VMI, Xen, or Lhype. These patches apply to

The following patches introduce the core infrastructure needed to paravirtualize the 32-bit x86 Linux kernel. This is done by moving virtualization sensitive insn's or code paths to a function table, paravirt_ops. This structure can be populated with hypervisor specific calls or native stubs and currently support running on bare metal, VMI, Xen, or Lhype. These patches apply to

...-#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) static inline void raw_local_irq_restore(unsigned long flags) { @@ -100,8 +108,6 @@ static inline unsigned long __raw_local_ return flags; } -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) static inline int raw_irqs_disabled(void) { @@ -128,6 +134,7 @@ static inline void halt(void) __asm__ __volatile__("hlt": : :"memory"); } +#endif /* CONFIG_PARAVIRT */ #else /* __ASSEMBLY__: */ # ifdef CONFIG_TRACE_IRQFLAGS # define TRACE_IRQS_ON cal...

...-#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) static inline void raw_local_irq_restore(unsigned long flags) { @@ -100,8 +108,6 @@ static inline unsigned long __raw_local_ return flags; } -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) static inline int raw_irqs_disabled(void) { @@ -128,6 +134,7 @@ static inline void halt(void) __asm__ __volatile__("hlt": : :"memory"); } +#endif /* CONFIG_PARAVIRT */ #else /* __ASSEMBLY__: */ # ifdef CONFIG_TRACE_IRQFLAGS # define TRACE_IRQS_ON cal...

...static inline void raw_local_irq_enable(void) +{ + __asm__ __volatile__(paravirt_alt("call *%0;", + PARAVIRT_IRQ_ENABLE, CLBR_NONE) + : : "m" (paravirt_ops.irq_enable) + : "memory", "rax", "cc"); +} + +static inline unsigned long __raw_local_irq_save(void) +{ + unsigned long f; + + __asm__ __volatile__(paravirt_alt( "call *%1;" + "call *%2;", + PARAVIRT_SAVE_FLAGS_IRQ_DISABLE, + CLBR_NONE) + : "=a"(f) + : "m" (paravirt_ops.save_fl), + "m" (paravirt_ops.i...

...static inline void raw_local_irq_enable(void) +{ + __asm__ __volatile__(paravirt_alt("call *%0;", + PARAVIRT_IRQ_ENABLE, CLBR_NONE) + : : "m" (paravirt_ops.irq_enable) + : "memory", "rax", "cc"); +} + +static inline unsigned long __raw_local_irq_save(void) +{ + unsigned long f; + + __asm__ __volatile__(paravirt_alt( "call *%1;" + "call *%2;", + PARAVIRT_SAVE_FLAGS_IRQ_DISABLE, + CLBR_NONE) + : "=a"(f) + : "m" (paravirt_ops.save_fl), + "m" (paravirt_ops.i...

Hi Andi, This series of patches updates paravirt_ops in various ways. Some of the changes are plain cleanups and improvements, and some add some interfaces necessary for Xen. The brief overview: add-MAINTAINERS.patch - obvious remove-CONFIG_DEBUG_PARAVIRT.patch - no longer needed paravirt-nop.patch - mark nop operations consistently paravirt-pte-accessors.patch - operations to pack/unpack