[Xen-devel] [PATCH 05 of 24] libxc: use correct size of struct xen_mc

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1283779691 -3600
# Node ID b4aa42793b8a8434aa3d7371e22e86dcca4f5a7a
# Parent  8ad75cd961a081ce4ba60c97899b13112d7a5f3f
libxc: use correct size of struct xen_mc

We want the size of the struct not the pointer (although rounding up
to page size in lock_pages probably saves us).

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

diff -r 8ad75cd961a0 -r b4aa42793b8a tools/libxc/xc_misc.c
--- a/tools/libxc/xc_misc.c     Mon Sep 06 14:28:11 2010 +0100
+++ b/tools/libxc/xc_misc.c     Mon Sep 06 14:28:11 2010 +0100
@@ -153,7 +153,7 @@ int xc_mca_op(xc_interface *xch, struct 
     DECLARE_HYPERCALL;
 
     mc->interface_version = XEN_MCA_INTERFACE_VERSION;
-    if ( lock_pages(xch, mc, sizeof(mc)) )
+    if ( lock_pages(xch, mc, sizeof(*mc)) )
     {
         PERROR("Could not lock xen_mc memory");
         return -EINVAL;
@@ -162,7 +162,7 @@ int xc_mca_op(xc_interface *xch, struct 
     hypercall.op = __HYPERVISOR_mca;
     hypercall.arg[0] = (unsigned long)mc;
     ret = do_xen_hypercall(xch, &hypercall);
-    unlock_pages(xch, mc, sizeof(mc));
+    unlock_pages(xch, mc, sizeof(*mc));
     return ret;
 }
 #endif

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