search for: __raw_local_save_flags

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

...FF =================================================================== --- a/include/asm-i386/irqflags.h +++ b/include/asm-i386/irqflags.h @@ -9,62 +9,12 @@ */ #ifndef _ASM_IRQFLAGS_H #define _ASM_IRQFLAGS_H +#include <asm/paravirt.h> #ifndef __ASSEMBLY__ -static inline unsigned long __raw_local_save_flags(void) -{ - unsigned long flags; - - __asm__ __volatile__( - "pushfl ; popl %0" - : "=g" (flags) - : /* no input */ - ); - - return flags; -} - #define raw_local_save_flags(flags) \ do { (flags) = __raw_local_save_flags(); } while (0) - -static inline void raw_local_irq_re...

...FF =================================================================== --- a/include/asm-i386/irqflags.h +++ b/include/asm-i386/irqflags.h @@ -9,62 +9,12 @@ */ #ifndef _ASM_IRQFLAGS_H #define _ASM_IRQFLAGS_H +#include <asm/paravirt.h> #ifndef __ASSEMBLY__ -static inline unsigned long __raw_local_save_flags(void) -{ - unsigned long flags; - - __asm__ __volatile__( - "pushfl ; popl %0" - : "=g" (flags) - : /* no input */ - ); - - return flags; -} - #define raw_local_save_flags(flags) \ do { (flags) = __raw_local_save_flags(); } while (0) - -static inline void raw_local_irq_re...

...============================================ --- a/include/asm-i386/irqflags.h +++ b/include/asm-i386/irqflags.h @@ -10,6 +10,9 @@ #ifndef _ASM_IRQFLAGS_H #define _ASM_IRQFLAGS_H +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else #ifndef __ASSEMBLY__ static inline unsigned long __raw_local_save_flags(void) @@ -24,9 +27,6 @@ static inline unsigned long __raw_local_ return flags; } - -#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) static inline void raw_local_irq_restore(unsigned long flags) { @@ -66,18 +66,6 @@ static inline void halt(void)...

...============================================ --- a/include/asm-i386/irqflags.h +++ b/include/asm-i386/irqflags.h @@ -10,6 +10,9 @@ #ifndef _ASM_IRQFLAGS_H #define _ASM_IRQFLAGS_H +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else #ifndef __ASSEMBLY__ static inline unsigned long __raw_local_save_flags(void) @@ -24,9 +27,6 @@ static inline unsigned long __raw_local_ return flags; } - -#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) static inline void raw_local_irq_restore(unsigned long flags) { @@ -66,18 +66,6 @@ static inline void halt(void)...

...paravirt_ops.write_cr2(x) + +#define read_cr3() paravirt_ops.read_cr3() +#define write_cr3(x) paravirt_ops.write_cr3(x) + +#define read_cr4() paravirt_ops.read_cr4() +#define read_cr4_safe(x) paravirt_ops.read_cr4_safe() +#define write_cr4(x) paravirt_ops.write_cr4(x) + +static inline unsigned long __raw_local_save_flags(void) +{ + return paravirt_ops.save_fl(); +} + +static inline 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) +{ + pa...

Here is an slightly updated version of the paravirt_ops patch. If your comments and criticism were welcome before, now it's even more! There are some issues that are _not_ addressed in this revision, and here are the causes: * split debugreg into multiple functions, suggested by Andi: - Me and jsfg agree that introducing more pvops (specially 14!) is not worthwhile. So, although we do

Here is an slightly updated version of the paravirt_ops patch. If your comments and criticism were welcome before, now it's even more! There are some issues that are _not_ addressed in this revision, and here are the causes: * split debugreg into multiple functions, suggested by Andi: - Me and jsfg agree that introducing more pvops (specially 14!) is not worthwhile. So, although we do

This is hopefully the last iteration of the pvops64 patch. >From the last version, we have only one change, which is include/asm-x86_64/processor.h: There were still one survivor in raw asm. Also, git screwed me up for some reason, and the 25th patch was missing the new files, paravirt.{c,h}. (although I do remember having git-add'ed it, but who knows...) Andrew, could you please push it

This is hopefully the last iteration of the pvops64 patch. >From the last version, we have only one change, which is include/asm-x86_64/processor.h: There were still one survivor in raw asm. Also, git screwed me up for some reason, and the 25th patch was missing the new files, paravirt.{c,h}. (although I do remember having git-add'ed it, but who knows...) Andrew, could you please push it

...irt.h> + +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1 << 9)); +} +#else + /* * Interrupt control: */ @@ -30,8 +39,6 @@ static inline unsigned long __raw_local_ return flags; } -#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...

...irt.h> + +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1 << 9)); +} +#else + /* * Interrupt control: */ @@ -30,8 +39,6 @@ static inline unsigned long __raw_local_ return flags; } -#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...

Hi folks, After some time away from it, and a big rebase as a consequence, here is the updated version of paravirt_ops for x86_64, heading to inclusion. Your criticism is of course, very welcome. Have fun -- arch/x86_64/Kconfig | 11 arch/x86_64/ia32/syscall32.c | 2 arch/x86_64/kernel/Makefile | 1 arch/x86_64/kernel/apic.c | 2

Hi folks, After some time away from it, and a big rebase as a consequence, here is the updated version of paravirt_ops for x86_64, heading to inclusion. Your criticism is of course, very welcome. Have fun -- arch/x86_64/Kconfig | 11 arch/x86_64/ia32/syscall32.c | 2 arch/x86_64/kernel/Makefile | 1 arch/x86_64/kernel/apic.c | 2

...ags.h @@ -87,6 +87,9 @@ static inline unsigned long __raw_local_ #endif /* __ASSEMBLY__ */ #endif /* CONFIG_PARAVIRT */ +/* Bit 9 of eflags means interrupts are enabled: a raw int for asm. */ +#define EFLAGS_IF 512 + #ifndef __ASSEMBLY__ #define raw_local_save_flags(flags) \ do { (flags) = __raw_local_save_flags(); } while (0) @@ -96,7 +99,7 @@ static inline unsigned long __raw_local_ static inline int raw_irqs_disabled_flags(unsigned long flags) { - return !(flags & (1 << 9)); + return !(flags & EFLAGS_IF); } static inline int raw_irqs_disabled(void)

...ags.h @@ -87,6 +87,9 @@ static inline unsigned long __raw_local_ #endif /* __ASSEMBLY__ */ #endif /* CONFIG_PARAVIRT */ +/* Bit 9 of eflags means interrupts are enabled: a raw int for asm. */ +#define EFLAGS_IF 512 + #ifndef __ASSEMBLY__ #define raw_local_save_flags(flags) \ do { (flags) = __raw_local_save_flags(); } while (0) @@ -96,7 +99,7 @@ static inline unsigned long __raw_local_ static inline int raw_irqs_disabled_flags(unsigned long flags) { - return !(flags & (1 << 9)); + return !(flags & EFLAGS_IF); } static inline int raw_irqs_disabled(void)

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

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