commit 9a032e393a8bc888a9b0c898cbdb9db2cee7b536
author Ian Campbell <ian.campbell@citrix.com> Wed Oct 17 13:37:49 2012 -0700
committer Ian Campbell <ian.campbell@citrix.com> Thu Nov 29 12:57:36 2012 +0000
tree da8d1705a10d2728627d3c13c64f6de5881d177d
parent b3e40b72bb24237b0aee9f6ba2e9f88dd4ff3c0a

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: Mukesh Rathor <mukesh.rathor@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

This derivative is also:

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

arch/x86/xen/mmu.c

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 6226c99..0f6386a 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2479,7 +2479,9 @@
 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 @@
 	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

diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 8adb9cc..b612267 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -178,7 +178,7 @@
 					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 @@
 	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

diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index 6a198e4..990b43e 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -27,6 +27,9 @@
 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 */