Commit 9a032e39 authored by Ian Campbell's avatar Ian Campbell
Browse files

xen: add pages parameter to xen_remap_domain_mfn_range 



Also introduce xen_unmap_domain_mfn_range. These are the parts of
Mukesh's "xen/pvh: Implement MMU changes for PVH" which are also
needed as a baseline for ARM privcmd support.

The original patch was:

Signed-off-by: default avatarMukesh Rathor <mukesh.rathor@oracle.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>

This derivative is also:

Signed-off-by: default avatarIan Campbell <ian.campbell@citrix.com>
parent b3e40b72

arch/x86/xen/mmu.c

+14 −1
Original line number Diff line number Diff line
@@ -2479,7 +2479,9 @@ static int remap_area_mfn_pte_fn(pte_t *ptep, pgtable_t token, 
int xen_remap_domain_mfn_range(struct vm_area_struct *vma,

			       unsigned long addr,

			       unsigned long mfn, int nr,

			       pgprot_t prot, unsigned domid)

			       pgprot_t prot, unsigned domid,

			       struct page **pages)



{

	struct remap_data rmd;

	struct mmu_update mmu_update[REMAP_BATCH_SIZE];
@@ -2523,3 +2525,14 @@ out: 
	return err;

}

EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range);



/* Returns: 0 success */

int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,

			       int numpgs, struct page **pages)

{

	if (!pages || !xen_feature(XENFEAT_auto_translated_physmap))

		return 0;



	return -EINVAL;

}

EXPORT_SYMBOL_GPL(xen_unmap_domain_mfn_range);

drivers/xen/privcmd.c

+3 −2
Original line number Diff line number Diff line
@@ -178,7 +178,7 @@ static int mmap_mfn_range(void *data, void *state) 
					msg->va & PAGE_MASK,

					msg->mfn, msg->npages,

					vma->vm_page_prot,

					st->domain);

					st->domain, NULL);

	if (rc < 0)

		return rc;
@@ -267,7 +267,8 @@ static int mmap_batch_fn(void *data, void *state) 
	int ret;



	ret = xen_remap_domain_mfn_range(st->vma, st->va & PAGE_MASK, *mfnp, 1,

					 st->vma->vm_page_prot, st->domain);

					 st->vma->vm_page_prot, st->domain,

					 NULL);



	/* Store error code for second pass. */

	*(st->err++) = ret;

include/xen/xen-ops.h

+4 −1
Original line number Diff line number Diff line
@@ -27,6 +27,9 @@ struct vm_area_struct; 
int xen_remap_domain_mfn_range(struct vm_area_struct *vma,

			       unsigned long addr,

			       unsigned long mfn, int nr,

			       pgprot_t prot, unsigned domid);

			       pgprot_t prot, unsigned domid,

			       struct page **pages);

int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,

			       int numpgs, struct page **pages);



#endif /* INCLUDE_XEN_OPS_H */

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