add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/include/xen/xen.h
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@@ -29,6 +29,9 @@
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 extern uint32_t xen_start_flags;
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+#include <xen/interface/hvm/start_info.h>
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+extern struct hvm_start_info pvh_start_info;
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+
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 #ifdef CONFIG_XEN_DOM0
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 #include <xen/interface/xen.h>
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 #include <asm/xen/hypervisor.h>
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@@ -39,4 +42,34 @@
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 #define xen_initial_domain()	(0)
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 #endif	/* CONFIG_XEN_DOM0 */
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+struct bio_vec;
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+struct page;
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+
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+bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
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+		const struct page *page);
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+
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+#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
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+extern u64 xen_saved_max_mem_size;
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+#endif
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+
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+#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
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+int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
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+void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
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+#else
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+#define xen_alloc_unpopulated_pages alloc_xenballooned_pages
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+#define xen_free_unpopulated_pages free_xenballooned_pages
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+#include <xen/balloon.h>
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+#endif
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+
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+#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86)
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+bool __init xen_processor_present(uint32_t acpi_id);
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+#else
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+#include <linux/bug.h>
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+static inline bool xen_processor_present(uint32_t acpi_id)
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+{
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+	BUG();
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+	return false;
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+}
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+#endif
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+
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 #endif	/* _XEN_XEN_H */