diff options
Diffstat (limited to 'include/xen/xen.h')
| -rw-r--r-- | include/xen/xen.h | 79 |
1 files changed, 74 insertions, 5 deletions
diff --git a/include/xen/xen.h b/include/xen/xen.h index a74d4362c4f8..61854e3f2837 100644 --- a/include/xen/xen.h +++ b/include/xen/xen.h @@ -1,6 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _XEN_XEN_H #define _XEN_XEN_H +#include <linux/types.h> + enum xen_domain_type { XEN_NATIVE, /* running on bare hardware */ XEN_PV_DOMAIN, /* running in a PV domain */ @@ -13,20 +16,86 @@ extern enum xen_domain_type xen_domain_type; #define xen_domain_type XEN_NATIVE #endif +#ifdef CONFIG_XEN_PVH +extern bool xen_pvh; +#else +#define xen_pvh 0 +#endif + +#ifdef CONFIG_X86 +#include <asm/cpufeature.h> + +#define xen_pv_domain() (cpu_feature_enabled(X86_FEATURE_XENPV)) +#else +#define xen_pv_domain() 0 +#endif + #define xen_domain() (xen_domain_type != XEN_NATIVE) -#define xen_pv_domain() (xen_domain() && \ - xen_domain_type == XEN_PV_DOMAIN) -#define xen_hvm_domain() (xen_domain() && \ - xen_domain_type == XEN_HVM_DOMAIN) +#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN) +#define xen_pvh_domain() (xen_pvh) + +extern uint32_t xen_start_flags; + +#ifdef CONFIG_XEN_PV +extern bool xen_pv_pci_possible; +#else +#define xen_pv_pci_possible 0 +#endif + +#include <xen/interface/hvm/start_info.h> +extern struct hvm_start_info pvh_start_info; +void xen_prepare_pvh(void); +struct pt_regs; +void xen_pv_evtchn_do_upcall(struct pt_regs *regs); #ifdef CONFIG_XEN_DOM0 #include <xen/interface/xen.h> #include <asm/xen/hypervisor.h> #define xen_initial_domain() (xen_domain() && \ - xen_start_info && xen_start_info->flags & SIF_INITDOMAIN) + (xen_start_flags & SIF_INITDOMAIN)) #else /* !CONFIG_XEN_DOM0 */ #define xen_initial_domain() (0) #endif /* CONFIG_XEN_DOM0 */ +struct bio_vec; +struct page; + +bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, + const struct page *page); + +#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON) +extern u64 xen_saved_max_mem_size; +#endif + +#ifdef CONFIG_XEN_UNPOPULATED_ALLOC +int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages); +void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages); +#include <linux/ioport.h> +int arch_xen_unpopulated_init(struct resource **res); +#else +#include <xen/balloon.h> +static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages, + struct page **pages) +{ + return xen_alloc_ballooned_pages(nr_pages, pages); +} +static inline void xen_free_unpopulated_pages(unsigned int nr_pages, + struct page **pages) +{ + xen_free_ballooned_pages(nr_pages, pages); +} +#endif + +#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86) +bool __init xen_processor_present(uint32_t acpi_id); +#else +#include <linux/bug.h> +static inline bool xen_processor_present(uint32_t acpi_id) +{ + BUG(); + return false; +} +#endif + #endif /* _XEN_XEN_H */ |