Commit be15f9d6 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (42 commits)
  xen: cache cr0 value to avoid trap'n'emulate for read_cr0
  xen/x86-64: clean up warnings about IST-using traps
  xen/x86-64: fix breakpoints and hardware watchpoints
  xen: reserve Xen start_info rather than e820 reserving
  xen: add FIX_TEXT_POKE to fixmap
  lguest: update lazy mmu changes to match lguest's use of kvm hypercalls
  xen: honour VCPU availability on boot
  xen: add "capabilities" file
  xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yet
  xen/sys/hypervisor: change writable_pt to features
  xen: add /sys/hypervisor support
  xen/xenbus: export xenbus_dev_changed
  xen: use device model for suspending xenbus devices
  xen: remove suspend_cancel hook
  xen/dev-evtchn: clean up locking in evtchn
  xen: export ioctl headers to userspace
  xen: add /dev/xen/evtchn driver
  xen: add irq_from_evtchn
  xen: clean up gate trap/interrupt constants
  xen: set _PAGE_NX in __supported_pte_mask before pagetable construction
  ...
parents 595dc54a a789ed5f

arch/x86/include/asm/paravirt.h

+11 −11
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ struct desc_ptr; 
struct tss_struct;

struct mm_struct;

struct desc_struct;

struct task_struct;



/*

 * Wrapper type for pointers to code which uses the non-standard
@@ -203,7 +204,8 @@ struct pv_cpu_ops { 


	void (*swapgs)(void);



	struct pv_lazy_ops lazy_mode;

	void (*start_context_switch)(struct task_struct *prev);

	void (*end_context_switch)(struct task_struct *next);

};



struct pv_irq_ops {
@@ -1399,25 +1401,23 @@ enum paravirt_lazy_mode { 
};



enum paravirt_lazy_mode paravirt_get_lazy_mode(void);

void paravirt_enter_lazy_cpu(void);

void paravirt_leave_lazy_cpu(void);

void paravirt_start_context_switch(struct task_struct *prev);

void paravirt_end_context_switch(struct task_struct *next);



void paravirt_enter_lazy_mmu(void);

void paravirt_leave_lazy_mmu(void);

void paravirt_leave_lazy(enum paravirt_lazy_mode mode);



#define  __HAVE_ARCH_ENTER_LAZY_CPU_MODE

static inline void arch_enter_lazy_cpu_mode(void)

#define  __HAVE_ARCH_START_CONTEXT_SWITCH

static inline void arch_start_context_switch(struct task_struct *prev)

{

	PVOP_VCALL0(pv_cpu_ops.lazy_mode.enter);

	PVOP_VCALL1(pv_cpu_ops.start_context_switch, prev);

}



static inline void arch_leave_lazy_cpu_mode(void)

static inline void arch_end_context_switch(struct task_struct *next)

{

	PVOP_VCALL0(pv_cpu_ops.lazy_mode.leave);

	PVOP_VCALL1(pv_cpu_ops.end_context_switch, next);

}



void arch_flush_lazy_cpu_mode(void);



#define  __HAVE_ARCH_ENTER_LAZY_MMU_MODE

static inline void arch_enter_lazy_mmu_mode(void)

{

arch/x86/include/asm/pgtable.h

+2 −0
Original line number Diff line number Diff line
@@ -81,6 +81,8 @@ static inline void __init paravirt_pagetable_setup_done(pgd_t *base) 
#define pte_val(x)	native_pte_val(x)

#define __pte(x)	native_make_pte(x)



#define arch_end_context_switch(prev)	do {} while(0)



#endif	/* CONFIG_PARAVIRT */



/*

arch/x86/include/asm/required-features.h

+7 −1
Original line number Diff line number Diff line
@@ -48,9 +48,15 @@ 
#endif



#ifdef CONFIG_X86_64

#ifdef CONFIG_PARAVIRT

/* Paravirtualized systems may not have PSE or PGE available */

#define NEED_PSE	0

#define NEED_MSR	(1<<(X86_FEATURE_MSR & 31))

#define NEED_PGE	0

#else

#define NEED_PSE	(1<<(X86_FEATURE_PSE) & 31)

#define NEED_PGE	(1<<(X86_FEATURE_PGE) & 31)

#endif

#define NEED_MSR	(1<<(X86_FEATURE_MSR & 31))

#define NEED_FXSR	(1<<(X86_FEATURE_FXSR & 31))

#define NEED_XMM	(1<<(X86_FEATURE_XMM & 31))

#define NEED_XMM2	(1<<(X86_FEATURE_XMM2 & 31))

arch/x86/include/asm/thread_info.h

+3 −1
Original line number Diff line number Diff line
@@ -94,7 +94,8 @@ struct thread_info { 
#define TIF_FORCED_TF		24	/* true if TF in eflags artificially */

#define TIF_DEBUGCTLMSR		25	/* uses thread_struct.debugctlmsr */

#define TIF_DS_AREA_MSR		26      /* uses thread_struct.ds_area_msr */

#define TIF_SYSCALL_FTRACE	27	/* for ftrace syscall instrumentation */

#define TIF_LAZY_MMU_UPDATES	27	/* task is updating the mmu lazily */

#define TIF_SYSCALL_FTRACE	28	/* for ftrace syscall instrumentation */



#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)

#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
@@ -116,6 +117,7 @@ struct thread_info { 
#define _TIF_FORCED_TF		(1 << TIF_FORCED_TF)

#define _TIF_DEBUGCTLMSR	(1 << TIF_DEBUGCTLMSR)

#define _TIF_DS_AREA_MSR	(1 << TIF_DS_AREA_MSR)

#define _TIF_LAZY_MMU_UPDATES	(1 << TIF_LAZY_MMU_UPDATES)

#define _TIF_SYSCALL_FTRACE	(1 << TIF_SYSCALL_FTRACE)



/* work to do in syscall_trace_enter() */

arch/x86/include/asm/traps.h

+3 −0
Original line number Diff line number Diff line
@@ -14,6 +14,9 @@ asmlinkage void divide_error(void); 
asmlinkage void debug(void);

asmlinkage void nmi(void);

asmlinkage void int3(void);

asmlinkage void xen_debug(void);

asmlinkage void xen_int3(void);

asmlinkage void xen_stack_segment(void);

asmlinkage void overflow(void);

asmlinkage void bounds(void);

asmlinkage void invalid_op(void);

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