[Xen-devel] [PATCH for-4.5 v8 18/19] tools/libxc: Allocate magic page for mem access on ARM

[Tamas K Lengyel <tklengyel@xxxxxxxxxxxxx>]

Signed-off-by: Tamas K Lengyel <tklengyel@xxxxxxxxxxxxx>
Reviewed-by: Julien Grall <julien.grall@xxxxxxxxxx>
Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 tools/libxc/xc_dom_arm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
index 9b31b1f..13e881e 100644
--- a/tools/libxc/xc_dom_arm.c
+++ b/tools/libxc/xc_dom_arm.c
@@ -26,9 +26,10 @@
 #include "xg_private.h"
 #include "xc_dom.h"
 
-#define NR_MAGIC_PAGES 2
+#define NR_MAGIC_PAGES 3
 #define CONSOLE_PFN_OFFSET 0
 #define XENSTORE_PFN_OFFSET 1
+#define MEMACCESS_PFN_OFFSET 2
 
 #define LPAE_SHIFT 9
 
@@ -87,10 +88,13 @@ static int alloc_magic_pages(struct xc_dom_image *dom)
 
     xc_clear_domain_page(dom->xch, dom->guest_domid, dom->console_pfn);
     xc_clear_domain_page(dom->xch, dom->guest_domid, dom->xenstore_pfn);
+    xc_clear_domain_page(dom->xch, dom->guest_domid, base + 
MEMACCESS_PFN_OFFSET);
     xc_hvm_param_set(dom->xch, dom->guest_domid, HVM_PARAM_CONSOLE_PFN,
             dom->console_pfn);
     xc_hvm_param_set(dom->xch, dom->guest_domid, HVM_PARAM_STORE_PFN,
             dom->xenstore_pfn);
+    xc_hvm_param_set(dom->xch, dom->guest_domid, HVM_PARAM_ACCESS_RING_PFN,
+            base + MEMACCESS_PFN_OFFSET);
     /* allocated by toolstack */
     xc_hvm_param_set(dom->xch, dom->guest_domid, HVM_PARAM_CONSOLE_EVTCHN,
             dom->console_evtchn);
-- 
2.1.0


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