diff options
Diffstat (limited to 'arch/x86/xen/xen-ops.h')
| -rw-r--r-- | arch/x86/xen/xen-ops.h | 190 |
1 files changed, 180 insertions, 10 deletions
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 9a8bb972193d..090349baec09 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -5,8 +5,15 @@ #include <linux/init.h> #include <linux/clocksource.h> #include <linux/irqreturn.h> +#include <linux/linkage.h> + +#include <xen/interface/xenpmu.h> #include <xen/xen-ops.h> +#include <asm/page.h> + +#include <trace/events/xen.h> + /* These are code, but not functions. Defined in entry.S */ extern const char xen_failsafe_callback[]; @@ -21,16 +28,13 @@ extern void *xen_initial_gdt; struct trap_info; void xen_copy_trap_info(struct trap_info *traps); -DECLARE_PER_CPU(struct vcpu_info, xen_vcpu_info); +DECLARE_PER_CPU_ALIGNED(struct vcpu_info, xen_vcpu_info); DECLARE_PER_CPU(unsigned long, xen_cr3); -DECLARE_PER_CPU(unsigned long, xen_current_cr3); extern struct start_info *xen_start_info; extern struct shared_info xen_dummy_shared_info; extern struct shared_info *HYPERVISOR_shared_info; -extern bool xen_fifo_events; - void xen_setup_mfn_list_list(void); void xen_build_mfn_list_list(void); void xen_setup_machphys_mapping(void); @@ -43,8 +47,12 @@ void xen_mm_unpin_all(void); #ifdef CONFIG_X86_64 void __init xen_relocate_p2m(void); #endif +void __init xen_do_remap_nonram(void); +void __init xen_add_remap_nonram(phys_addr_t maddr, phys_addr_t paddr, + unsigned long size); -bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size); +void __init xen_chk_is_e820_usable(phys_addr_t start, phys_addr_t size, + const char *component); unsigned long __ref xen_chk_extra_mem(unsigned long pfn); void __init xen_inv_extra_mem(void); void __init xen_remap_memory(void); @@ -72,8 +80,6 @@ void xen_restore_time_memory_area(void); void xen_init_time_ops(void); void xen_hvm_init_time_ops(void); -irqreturn_t xen_debug_interrupt(int irq, void *dev_id); - bool xen_vcpu_stolen(int vcpu); void xen_vcpu_setup(int cpu); @@ -108,11 +114,12 @@ static inline void xen_uninit_lock_cpu(int cpu) struct dom0_vga_console_info; -#ifdef CONFIG_XEN_PV_DOM0 -void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size); +#ifdef CONFIG_XEN_DOM0 +void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size, + struct screen_info *); #else static inline void __init xen_init_vga(const struct dom0_vga_console_info *info, - size_t size) + size_t size, struct screen_info *si) { } #endif @@ -147,9 +154,12 @@ int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int), void xen_pin_vcpu(int cpu); void xen_emergency_restart(void); +void xen_force_evtchn_callback(void); + #ifdef CONFIG_XEN_PV void xen_pv_pre_suspend(void); void xen_pv_post_suspend(int suspend_cancelled); +void xen_start_kernel(struct start_info *si); #else static inline void xen_pv_pre_suspend(void) {} static inline void xen_pv_post_suspend(int suspend_cancelled) {} @@ -161,4 +171,164 @@ void xen_hvm_post_suspend(int suspend_cancelled); static inline void xen_hvm_post_suspend(int suspend_cancelled) {} #endif +/* + * The maximum amount of extra memory compared to the base size. The + * main scaling factor is the size of struct page. At extreme ratios + * of base:extra, all the base memory can be filled with page + * structures for the extra memory, leaving no space for anything + * else. + * + * 10x seems like a reasonable balance between scaling flexibility and + * leaving a practically usable system. + */ +#define EXTRA_MEM_RATIO (10) + +void xen_add_extra_mem(unsigned long start_pfn, unsigned long n_pfns); + +struct dentry * __init xen_init_debugfs(void); + +enum pt_level { + PT_PGD, + PT_P4D, + PT_PUD, + PT_PMD, + PT_PTE +}; + +bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn); +void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); +unsigned long xen_read_cr2_direct(void); +void xen_init_mmu_ops(void); +void xen_hvm_init_mmu_ops(void); + +/* Multicalls */ +struct multicall_space +{ + struct multicall_entry *mc; + void *args; +}; + +/* Allocate room for a multicall and its args */ +struct multicall_space __xen_mc_entry(size_t args); + +DECLARE_PER_CPU(unsigned long, xen_mc_irq_flags); + +/* Call to start a batch of multiple __xen_mc_entry()s. Must be + paired with xen_mc_issue() */ +static inline void xen_mc_batch(void) +{ + unsigned long flags; + + /* need to disable interrupts until this entry is complete */ + local_irq_save(flags); + trace_xen_mc_batch(xen_get_lazy_mode()); + __this_cpu_write(xen_mc_irq_flags, flags); +} + +static inline struct multicall_space xen_mc_entry(size_t args) +{ + xen_mc_batch(); + return __xen_mc_entry(args); +} + +/* Flush all pending multicalls */ +void xen_mc_flush(void); + +/* Issue a multicall if we're not in a lazy mode */ +static inline void xen_mc_issue(unsigned mode) +{ + trace_xen_mc_issue(mode); + + if ((xen_get_lazy_mode() & mode) == 0) + xen_mc_flush(); + + /* restore flags saved in xen_mc_batch */ + local_irq_restore(this_cpu_read(xen_mc_irq_flags)); +} + +/* Set up a callback to be called when the current batch is flushed */ +void xen_mc_callback(void (*fn)(void *), void *data); + +/* + * Try to extend the arguments of the previous multicall command. The + * previous command's op must match. If it does, then it attempts to + * extend the argument space allocated to the multicall entry by + * arg_size bytes. + * + * The returned multicall_space will return with mc pointing to the + * command on success, or NULL on failure, and args pointing to the + * newly allocated space. + */ +struct multicall_space xen_mc_extend_args(unsigned long op, size_t arg_size); + +extern bool is_xen_pmu; + +irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id); +#ifdef CONFIG_XEN_HAVE_VPMU +void xen_pmu_init(int cpu); +void xen_pmu_finish(int cpu); +#else +static inline void xen_pmu_init(int cpu) {} +static inline void xen_pmu_finish(int cpu) {} +#endif +bool pmu_msr_chk_emulated(u32 msr, u64 *val, bool is_read); +int pmu_apic_update(uint32_t reg); +u64 xen_read_pmc(int counter); + +#ifdef CONFIG_SMP + +void asm_cpu_bringup_and_idle(void); +asmlinkage void cpu_bringup_and_idle(void); + +extern void xen_send_IPI_mask(const struct cpumask *mask, + int vector); +extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask, + int vector); +extern void xen_send_IPI_allbutself(int vector); +extern void xen_send_IPI_all(int vector); +extern void xen_send_IPI_self(int vector); + +extern int xen_smp_intr_init(unsigned int cpu); +extern void xen_smp_intr_free(unsigned int cpu); +int xen_smp_intr_init_pv(unsigned int cpu); +void xen_smp_intr_free_pv(unsigned int cpu); + +void xen_smp_count_cpus(void); +void xen_smp_cpus_done(unsigned int max_cpus); + +void xen_smp_send_reschedule(int cpu); +void xen_smp_send_call_function_ipi(const struct cpumask *mask); +void xen_smp_send_call_function_single_ipi(int cpu); + +void __noreturn xen_cpu_bringup_again(unsigned long stack); + +struct xen_common_irq { + int irq; + char *name; +}; +#else /* CONFIG_SMP */ + +static inline int xen_smp_intr_init(unsigned int cpu) +{ + return 0; +} +static inline void xen_smp_intr_free(unsigned int cpu) {} + +static inline int xen_smp_intr_init_pv(unsigned int cpu) +{ + return 0; +} +static inline void xen_smp_intr_free_pv(unsigned int cpu) {} +static inline void xen_smp_count_cpus(void) { } +#endif /* CONFIG_SMP */ + +#ifdef CONFIG_XEN_PV +void xen_hypercall_pv(void); +#endif +void xen_hypercall_hvm(void); +void xen_hypercall_amd(void); +void xen_hypercall_intel(void); +void xen_hypercall_setfunc(void); +void *__xen_hypercall_setfunc(void); + #endif /* XEN_OPS_H */ |