mirror of
https://github.com/torvalds/linux.git
synced 2024-12-19 09:32:32 +00:00
f6b3c72c23
Currently, we use a global vector as the Posted-Interrupts Notification Event for all the vCPUs in the system. We need to introduce another global vector for VT-d Posted-Interrtups, which will be used to wakeup the sleep vCPU when an external interrupt from a direct-assigned device happens for that vCPU. [ tglx: Removed a gazillion of extra newlines ] Signed-off-by: Feng Wu <feng.wu@intel.com> Cc: jiang.liu@linux.intel.com Link: http://lkml.kernel.org/r/1432026437-16560-4-git-send-email-feng.wu@intel.com Suggested-by: Yang Zhang <yang.z.zhang@intel.com> Acked-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
#ifndef _ASM_X86_IRQ_H
|
|
#define _ASM_X86_IRQ_H
|
|
/*
|
|
* (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
|
|
*
|
|
* IRQ/IPI changes taken from work by Thomas Radke
|
|
* <tomsoft@informatik.tu-chemnitz.de>
|
|
*/
|
|
|
|
#include <asm/apicdef.h>
|
|
#include <asm/irq_vectors.h>
|
|
|
|
static inline int irq_canonicalize(int irq)
|
|
{
|
|
return ((irq == 2) ? 9 : irq);
|
|
}
|
|
|
|
#ifdef CONFIG_X86_32
|
|
extern void irq_ctx_init(int cpu);
|
|
#else
|
|
# define irq_ctx_init(cpu) do { } while (0)
|
|
#endif
|
|
|
|
#define __ARCH_HAS_DO_SOFTIRQ
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
#include <linux/cpumask.h>
|
|
extern int check_irq_vectors_for_cpu_disable(void);
|
|
extern void fixup_irqs(void);
|
|
extern void irq_force_complete_move(int);
|
|
#endif
|
|
|
|
#ifdef CONFIG_HAVE_KVM
|
|
extern void kvm_set_posted_intr_wakeup_handler(void (*handler)(void));
|
|
#endif
|
|
|
|
extern void (*x86_platform_ipi_callback)(void);
|
|
extern void native_init_IRQ(void);
|
|
extern bool handle_irq(unsigned irq, struct pt_regs *regs);
|
|
|
|
extern __visible unsigned int do_IRQ(struct pt_regs *regs);
|
|
|
|
/* Interrupt vector management */
|
|
extern DECLARE_BITMAP(used_vectors, NR_VECTORS);
|
|
extern int vector_used_by_percpu_irq(unsigned int vector);
|
|
|
|
extern void init_ISA_irqs(void);
|
|
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
void arch_trigger_all_cpu_backtrace(bool);
|
|
#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_IRQ_H */
|