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https://github.com/xen-project/xen.git
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Juergen Gross
e3dd624e48
tools/libxc now contains libxenguest only. Move it to tools/libs/guest. When generating the pkg-config file for libxenguest a filter is now required for replacing "xenctrl" by "xencontrol" in the "Requires.private:" entry. Add this filter to tools/libs/libs.mk. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org> (stubdom parts)
110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
#ifndef __COMMON_X86_PV_H
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#define __COMMON_X86_PV_H
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#include "xg_sr_common_x86.h"
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/* Virtual address ranges reserved for hypervisor. */
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#define HYPERVISOR_VIRT_START_X86_64 0xFFFF800000000000ULL
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#define HYPERVISOR_VIRT_END_X86_64 0xFFFF87FFFFFFFFFFULL
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#define HYPERVISOR_VIRT_START_X86_32 0x00000000F5800000ULL
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#define HYPERVISOR_VIRT_END_X86_32 0x00000000FFFFFFFFULL
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/*
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* Convert an mfn to a pfn, given Xen's m2p table.
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*
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* Caller must ensure that the requested mfn is in range.
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*/
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xen_pfn_t mfn_to_pfn(struct xc_sr_context *ctx, xen_pfn_t mfn);
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/*
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* Query whether a particular mfn is valid in the physmap of a guest.
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*/
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bool mfn_in_pseudophysmap(struct xc_sr_context *ctx, xen_pfn_t mfn);
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/*
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* Debug a particular mfn by walking the p2m and m2p.
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*/
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void dump_bad_pseudophysmap_entry(struct xc_sr_context *ctx, xen_pfn_t mfn);
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/*
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* Convert a PV cr3 field to an mfn.
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*
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* Adjusts for Xen's extended-cr3 format to pack a 44bit physical address into
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* a 32bit architectural cr3.
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*/
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xen_pfn_t cr3_to_mfn(struct xc_sr_context *ctx, uint64_t cr3);
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/*
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* Convert an mfn to a PV cr3 field.
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*
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* Adjusts for Xen's extended-cr3 format to pack a 44bit physical address into
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* a 32bit architectural cr3.
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*/
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uint64_t mfn_to_cr3(struct xc_sr_context *ctx, xen_pfn_t mfn);
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/* Bits 12 through 51 of a PTE point at the frame */
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#define PTE_FRAME_MASK 0x000ffffffffff000ULL
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/*
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* Extract an mfn from a Pagetable Entry. May return INVALID_MFN if the pte
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* would overflow a 32bit xen_pfn_t.
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*/
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static inline xen_pfn_t pte_to_frame(uint64_t pte)
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{
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uint64_t frame = (pte & PTE_FRAME_MASK) >> PAGE_SHIFT;
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#ifdef __i386__
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if ( frame >= INVALID_MFN )
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return INVALID_MFN;
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#endif
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return frame;
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}
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/*
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* Change the frame in a Pagetable Entry while leaving the flags alone.
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*/
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static inline uint64_t merge_pte(uint64_t pte, xen_pfn_t mfn)
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{
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return (pte & ~PTE_FRAME_MASK) | ((uint64_t)mfn << PAGE_SHIFT);
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}
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/*
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* Get current domain information.
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*
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* Fills ctx->x86.pv
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* - .width
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* - .levels
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* - .fpp
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* - .p2m_frames
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*
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* Used by the save side to create the X86_PV_INFO record, and by the restore
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* side to verify the incoming stream.
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*
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* Returns 0 on success and non-zero on error.
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*/
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int x86_pv_domain_info(struct xc_sr_context *ctx);
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/*
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* Maps the Xen M2P.
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*
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* Fills ctx->x86.pv.
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* - .max_mfn
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* - .m2p
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*
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* Returns 0 on success and non-zero on error.
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*/
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int x86_pv_map_m2p(struct xc_sr_context *ctx);
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#endif
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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