xen/arm: p2m: Add a back pointer to domain in p2m_domain

The back pointer will be usefult later to get the domain when we only
have the p2m in hand.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Tamas K Lengyel <tamas@tklengyel.com>

diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index fe0ed9fd3e6fbf5522985fc89819276e37fe1599..2bddcd7a469471c12c0ab6922eab4979b1a4e16e 100644 (file)
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -1391,6 +1391,7 @@ int p2m_init(struct domain *d)
     if ( rc != 0 )
         return rc;
 
+    p2m->domain = d;
     p2m->max_mapped_gfn = _gfn(0);
     p2m->lowest_mapped_gfn = _gfn(ULONG_MAX);
 

diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index d0dae2e2f4aed56cc521d012b7337a736731855c..44450455da7c31fec04c59c89fbbb369ba2ff5f3 100644 (file)
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -81,6 +81,9 @@ struct p2m_domain {
      * enough available bits to store this information.
      */
     struct radix_tree_root mem_access_settings;
+
+    /* back pointer to domain */
+    struct domain *domain;
 };
 
 /*