628c28eefd
Auto-translated physmap guests (arm, arm64 and x86 PVHVM/PVH) map and unmap foreign GFNs using the same method (updating the physmap). Unify the two arm and x86 implementations into one commont one. Note that on arm and arm64, the correct error code will be returned (instead of always -EFAULT) and map/unmap failure warnings are no longer printed. These changes are required if the foreign domain is paging (-ENOENT failures are expected and must be propagated up to the caller). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
#ifndef INCLUDE_XEN_OPS_H
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#define INCLUDE_XEN_OPS_H
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#include <linux/percpu.h>
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#include <linux/notifier.h>
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#include <linux/efi.h>
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#include <asm/xen/interface.h>
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DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
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void xen_arch_pre_suspend(void);
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void xen_arch_post_suspend(int suspend_cancelled);
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void xen_timer_resume(void);
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void xen_arch_resume(void);
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void xen_resume_notifier_register(struct notifier_block *nb);
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void xen_resume_notifier_unregister(struct notifier_block *nb);
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int xen_setup_shutdown_event(void);
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extern unsigned long *xen_contiguous_bitmap;
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int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
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unsigned int address_bits,
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dma_addr_t *dma_handle);
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void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
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struct vm_area_struct;
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int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
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unsigned long addr,
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xen_pfn_t mfn, int nr,
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pgprot_t prot, unsigned domid,
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struct page **pages);
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int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,
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int numpgs, struct page **pages);
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int xen_xlate_remap_gfn_range(struct vm_area_struct *vma,
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unsigned long addr,
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xen_pfn_t gfn, int nr,
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pgprot_t prot,
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unsigned domid,
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struct page **pages);
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int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
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int nr, struct page **pages);
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bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
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#ifdef CONFIG_XEN_EFI
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extern efi_system_table_t *xen_efi_probe(void);
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#else
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static inline efi_system_table_t __init *xen_efi_probe(void)
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{
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return NULL;
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}
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#endif
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#ifdef CONFIG_PREEMPT
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static inline void xen_preemptible_hcall_begin(void)
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{
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}
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static inline void xen_preemptible_hcall_end(void)
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{
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}
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#else
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DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
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static inline void xen_preemptible_hcall_begin(void)
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{
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__this_cpu_write(xen_in_preemptible_hcall, true);
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}
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static inline void xen_preemptible_hcall_end(void)
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{
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__this_cpu_write(xen_in_preemptible_hcall, false);
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}
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#endif /* CONFIG_PREEMPT */
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#endif /* INCLUDE_XEN_OPS_H */
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