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x86: Call HVMOP_pagetable_dying on exit_mmap.

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When a pagetable is about to be destroyed, we notify Xen so that the
hypervisor can clear the related shadow pagetable.

Signed-off-by: Stefano Stabellini <[email protected]>
Signed-off-by: Jeremy Fitzhardinge <[email protected]>
This commit is contained in:
Stefano Stabellini 2010-06-17 14:22:52 +01:00 • committed by Jeremy Fitzhardinge
commit 5915100106
4 changed files with 46 additions and 0 deletions
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11
include/xen/interface/hvm/hvm_op.h
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@ -32,4 +32,15 @@ struct xen_hvm_param {
};
DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_param);
/* Hint from PV drivers for pagetable destruction. */
#define HVMOP_pagetable_dying 9
struct xen_hvm_pagetable_dying {
/* Domain with a pagetable about to be destroyed. */
domid_t domid;
/* guest physical address of the toplevel pagetable dying */
aligned_u64 gpa;
};
typedef struct xen_hvm_pagetable_dying xen_hvm_pagetable_dying_t;
DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_pagetable_dying_t);
#endif /* __XEN_PUBLIC_HVM_HVM_OP_H__ */