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105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
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/******************************************************************************
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* memory.h
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*
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* Memory reservation and information.
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*
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* SPDX-License-Identifier: MIT
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*
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* Copyright (c) 2005, Keir Fraser <keir@xensource.com>
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*/
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#ifndef __XEN_PUBLIC_MEMORY_H__
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#define __XEN_PUBLIC_MEMORY_H__
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#include "xen.h"
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/* Source mapping space. */
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/* ` enum phys_map_space { */
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#define XENMAPSPACE_shared_info 0 /* shared info page */
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#define XENMAPSPACE_grant_table 1 /* grant table page */
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#define XENMAPSPACE_gmfn 2 /* GMFN */
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#define XENMAPSPACE_gmfn_range 3 /* GMFN range, XENMEM_add_to_physmap only. */
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#define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom,
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* XENMEM_add_to_physmap_batch only. */
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/* ` } */
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/*
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* Sets the GPFN at which a particular page appears in the specified guest's
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* pseudophysical address space.
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* arg == addr of xen_add_to_physmap_t.
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*/
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#define XENMEM_add_to_physmap 7
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struct xen_add_to_physmap {
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/* Which domain to change the mapping for. */
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domid_t domid;
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/* Number of pages to go through for gmfn_range */
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UINT16 size;
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UINT32 space; /* => enum phys_map_space */
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#define XENMAPIDX_grant_table_status 0x80000000
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/* Index into space being mapped. */
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xen_ulong_t idx;
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/* GPFN in domid where the source mapping page should appear. */
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xen_pfn_t gpfn;
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};
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typedef struct xen_add_to_physmap xen_add_to_physmap_t;
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DEFINE_XEN_GUEST_HANDLE (xen_add_to_physmap_t);
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/*
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* Unmaps the page appearing at a particular GPFN from the specified guest's
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* pseudophysical address space.
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* arg == addr of xen_remove_from_physmap_t.
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*/
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#define XENMEM_remove_from_physmap 15
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struct xen_remove_from_physmap {
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/* Which domain to change the mapping for. */
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domid_t domid;
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/* GPFN of the current mapping of the page. */
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xen_pfn_t gpfn;
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};
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typedef struct xen_remove_from_physmap xen_remove_from_physmap_t;
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DEFINE_XEN_GUEST_HANDLE (xen_remove_from_physmap_t);
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/*
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* Returns the pseudo-physical memory map as it was when the domain
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* was started (specified by XENMEM_set_memory_map).
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* arg == addr of xen_memory_map_t.
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*/
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#define XENMEM_memory_map 9
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struct xen_memory_map {
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/*
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* On call the number of entries which can be stored in buffer. On
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* return the number of entries which have been stored in
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* buffer.
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*/
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UINT32 nr_entries;
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/*
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* Entries in the buffer are in the same format as returned by the
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* BIOS INT 0x15 EAX=0xE820 call.
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*/
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XEN_GUEST_HANDLE (void) buffer;
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};
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typedef struct xen_memory_map xen_memory_map_t;
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DEFINE_XEN_GUEST_HANDLE (xen_memory_map_t);
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#endif /* __XEN_PUBLIC_MEMORY_H__ */
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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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