[Xen-devel] [PATCH RFC v2 5/9] xen/arm: Implement modify_returncode

[Jaeyong Yoo <jaeyong.yoo@xxxxxxxxxxx>]

From: Alexey Sokolov <sokolov.a@xxxxxxxxxxx>

Making sched_op in do_suspend (driver/xen/manage.c) returns 0
on the success of suspend.

Singed-off-by: Alexey Sokolov <sokolov.a@xxxxxxxxxxx>
---
 tools/include/xen-foreign/reference.size |  2 +-
 tools/libxc/xc_resume.c                  | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/tools/include/xen-foreign/reference.size 
b/tools/include/xen-foreign/reference.size
index de36455..dfd691c 100644
--- a/tools/include/xen-foreign/reference.size
+++ b/tools/include/xen-foreign/reference.size
@@ -5,7 +5,7 @@ start_info                |       -       -    1112    1168
 trap_info                 |       -       -       8      16
 cpu_user_regs             |       -       -      68     200
 vcpu_guest_core_regs      |     304     304       -       -
-vcpu_guest_context        |     336     336    2800    5168
+vcpu_guest_context        |     440     440    2800    5168
 arch_vcpu_info            |       -       -      24      16
 vcpu_time_info            |       -       -      32      32
 vcpu_info                 |       -       -      64      64
diff --git a/tools/libxc/xc_resume.c b/tools/libxc/xc_resume.c
index 1c43ec6..32b58b9 100644
--- a/tools/libxc/xc_resume.c
+++ b/tools/libxc/xc_resume.c
@@ -87,6 +87,31 @@ static int modify_returncode(xc_interface *xch, uint32_t 
domid)
     return 0;
 }
 
+#elif defined(__arm__)
+
+static int modify_returncode(xc_interface *xch, uint32_t domid)
+{
+    vcpu_guest_context_any_t ctxt;
+    xc_dominfo_t info;
+    int rc;
+
+    if (xc_domain_getinfo(xch, domid, 1, &info) != 1)
+    {
+        PERROR("Could not get domain info");
+        return -1;
+    }
+
+    if ( (rc = xc_vcpu_getcontext(xch, domid, 0, &ctxt)) != 0 )
+        return rc;
+
+    ctxt.c.user_regs.r0_usr = 1;
+
+    if ( (rc = xc_vcpu_setcontext(xch, domid, 0, &ctxt)) != 0 )
+        return rc;
+
+    return 0;
+}
+
 #else
 
 static int modify_returncode(xc_interface *xch, uint32_t domid)
-- 
1.8.1.2


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