diff options
Diffstat (limited to 'include/asm-x86/irqflags.h')
| -rw-r--r-- | include/asm-x86/irqflags.h | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/include/asm-x86/irqflags.h b/include/asm-x86/irqflags.h index d17e1f623dbb..17e7a1701c97 100644 --- a/include/asm-x86/irqflags.h +++ b/include/asm-x86/irqflags.h @@ -111,7 +111,20 @@ static inline unsigned long __raw_local_irq_save(void) #define DISABLE_INTERRUPTS(x) cli #ifdef CONFIG_X86_64 +#define SWAPGS swapgs +/* + * Currently paravirt can't handle swapgs nicely when we + * don't have a stack we can rely on (such as a user space + * stack). So we either find a way around these or just fault + * and emulate if a guest tries to call swapgs directly. + * + * Either way, this is a good way to document that we don't + * have a reliable stack. x86_64 only. + */ #define SWAPGS_UNSAFE_STACK swapgs + +#define PARAVIRT_ADJUST_EXCEPTION_FRAME /* */ + #define INTERRUPT_RETURN iretq #define USERGS_SYSRET64 \ swapgs; \ @@ -177,15 +190,6 @@ static inline void trace_hardirqs_fixup(void) #else #ifdef CONFIG_X86_64 -/* - * Currently paravirt can't handle swapgs nicely when we - * don't have a stack we can rely on (such as a user space - * stack). So we either find a way around these or just fault - * and emulate if a guest tries to call swapgs directly. - * - * Either way, this is a good way to document that we don't - * have a reliable stack. x86_64 only. - */ #define ARCH_TRACE_IRQS_ON call trace_hardirqs_on_thunk #define ARCH_TRACE_IRQS_OFF call trace_hardirqs_off_thunk #define ARCH_LOCKDEP_SYS_EXIT call lockdep_sys_exit_thunk |