diff options
Diffstat (limited to 'arch/x86/include/asm/xen/hypervisor.h')
| -rw-r--r-- | arch/x86/include/asm/xen/hypervisor.h | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/arch/x86/include/asm/xen/hypervisor.h b/arch/x86/include/asm/xen/hypervisor.h index 16f548a661cf..c2fc7869b996 100644 --- a/arch/x86/include/asm/xen/hypervisor.h +++ b/arch/x86/include/asm/xen/hypervisor.h @@ -36,11 +36,14 @@ extern struct shared_info *HYPERVISOR_shared_info; extern struct start_info *xen_start_info; +#include <asm/bug.h> #include <asm/processor.h> +#define XEN_SIGNATURE "XenVMMXenVMM" + static inline uint32_t xen_cpuid_base(void) { - return hypervisor_cpuid_base("XenVMMXenVMM", 2); + return cpuid_base_hypervisor(XEN_SIGNATURE, 2); } struct pci_dev; @@ -61,4 +64,38 @@ void __init xen_pvh_init(struct boot_params *boot_params); void __init mem_map_via_hcall(struct boot_params *boot_params_p); #endif +/* Lazy mode for batching updates / context switch */ +enum xen_lazy_mode { + XEN_LAZY_NONE, + XEN_LAZY_MMU, + XEN_LAZY_CPU, +}; + +DECLARE_PER_CPU(enum xen_lazy_mode, xen_lazy_mode); + +static inline void enter_lazy(enum xen_lazy_mode mode) +{ + BUG_ON(this_cpu_read(xen_lazy_mode) != XEN_LAZY_NONE); + + this_cpu_write(xen_lazy_mode, mode); +} + +static inline void leave_lazy(enum xen_lazy_mode mode) +{ + BUG_ON(this_cpu_read(xen_lazy_mode) != mode); + + this_cpu_write(xen_lazy_mode, XEN_LAZY_NONE); +} + +enum xen_lazy_mode xen_get_lazy_mode(void); + +#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) +void xen_sanitize_proc_cap_bits(uint32_t *buf); +#else +static inline void xen_sanitize_proc_cap_bits(uint32_t *buf) +{ + BUG(); +} +#endif + #endif /* _ASM_X86_XEN_HYPERVISOR_H */ |