From bae1d2507e44417455eda76d4435352fee14cf51 Mon Sep 17 00:00:00 2001 From: Ravikiran G Thirumalai Date: Fri, 4 Apr 2008 03:06:29 -0700 Subject: [PATCH] x86: fix breakage of vSMP irq operations 25-rc* stopped working with CONFIG_X86_VSMP on vSMP machines. Looks like the vsmp irq ops got accidentally removed during merge of x86_64 pvops in 2.6.25. -- commit 6abcd98ffafbff81f0bfd7ee1d129e634af13245 removed vsmp irq ops. Tested with both CONFIG_X86_VSMP and without CONFIG_X86_VSMP, on vSMP and non vSMP x86_64 machines. Please apply. Signed-off-by: Ravikiran Thirumalai Signed-off-by: Ingo Molnar --- include/asm-x86/irqflags.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/include/asm-x86/irqflags.h b/include/asm-x86/irqflags.h index 92021c1ffa3a..0e2292483b35 100644 --- a/include/asm-x86/irqflags.h +++ b/include/asm-x86/irqflags.h @@ -70,6 +70,26 @@ static inline void raw_local_irq_restore(unsigned long flags) native_restore_fl(flags); } +#ifdef CONFIG_X86_VSMP + +/* + * Interrupt control for the VSMP architecture: + */ + +static inline void raw_local_irq_disable(void) +{ + unsigned long flags = __raw_local_save_flags(); + raw_local_irq_restore((flags & ~X86_EFLAGS_IF) | X86_EFLAGS_AC); +} + +static inline void raw_local_irq_enable(void) +{ + unsigned long flags = __raw_local_save_flags(); + raw_local_irq_restore((flags | X86_EFLAGS_IF) & (~X86_EFLAGS_AC)); +} + +#else + static inline void raw_local_irq_disable(void) { native_irq_disable(); @@ -80,6 +100,8 @@ static inline void raw_local_irq_enable(void) native_irq_enable(); } +#endif + /* * Used in the idle loop; sti takes one instruction cycle * to complete: @@ -137,10 +159,17 @@ static inline unsigned long __raw_local_irq_save(void) #define raw_local_irq_save(flags) \ do { (flags) = __raw_local_irq_save(); } while (0) +#ifdef CONFIG_X86_VSMP +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & X86_EFLAGS_IF) || (flags & X86_EFLAGS_AC); +} +#else static inline int raw_irqs_disabled_flags(unsigned long flags) { return !(flags & X86_EFLAGS_IF); } +#endif static inline int raw_irqs_disabled(void) { -- GitLab