[Xen-devel] [PATCH 3 of 7] Make suspend return 1 when a domain is resumed

[Brendan Cully <brendan@xxxxxxxxx>]

# HG changeset patch
# User Brendan Cully <brendan@xxxxxxxxx>
# Date 1168891374 28800
# Node ID 477813c50e5db59ae08d346288edf19eaf19dbcb
# Parent  204aa85417bd0c618cfe6dd69088a9a443191196
Make suspend return 1 when a domain is resumed.

Signed-off-by: Brendan Cully <brendan@xxxxxxxxx>

diff -r 204aa85417bd -r 477813c50e5d tools/libxc/xc_linux_save.c
--- a/tools/libxc/xc_linux_save.c       Mon Jan 15 12:01:27 2007 -0800
+++ b/tools/libxc/xc_linux_save.c       Mon Jan 15 12:02:54 2007 -0800
@@ -569,7 +569,18 @@ static xen_pfn_t *xc_map_m2p(int xc_hand
     return m2p;
 }
 
-
+static int xc_set_vcpucontext(int xc_handle, uint32_t dom,
+                              vcpu_guest_context_t *ctxt)
+{
+    DECLARE_DOMCTL;
+
+    domctl.cmd = XEN_DOMCTL_setvcpucontext;
+    domctl.domain = (domid_t)dom;
+    domctl.u.vcpucontext.vcpu = 0;
+    set_xen_guest_handle(domctl.u.vcpucontext.ctxt, ctxt);
+
+    return xc_domctl(xc_handle, &domctl);
+}
 
 int xc_linux_save(int xc_handle, int io_fd, uint32_t dom, uint32_t max_iters,
                   uint32_t max_factor, uint32_t flags, int (*suspend)(int))
@@ -1188,6 +1199,12 @@ int xc_linux_save(int xc_handle, int io_
         goto out;
     }
 
+    /* set hypercall return code to indicate domain is resuming */
+    ctxt.user_regs.eax = 1;
+    rc = xc_set_vcpucontext(xc_handle, dom, &ctxt);
+    if (rc)
+        ERROR("Error setting hypercall return code");
+
     /* Success! */
     rc = 0;
 

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