From: Dario Faggioli <dario.faggioli@citrix.com>
Date: Tue, 10 Sep 2013 17:54:05 +0000 (+0200)
Subject: libxc: allow for ctxt to be NULL in xc_vcpu_setcontext
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~6370^2~12
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=dfdfcdc6f7c51ef7e5d0547120d0ac943ef43c67;p=xen.git

libxc: allow for ctxt to be NULL in xc_vcpu_setcontext

Since, as can be seen in xen/common/domctl.c, that is legitimate
(it results in Xen calling vcpu_reset() on the vcpu).

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c
index c0ce079e3d..3210e34a73 100644
--- a/tools/libxc/xc_domain.c
+++ b/tools/libxc/xc_domain.c
@@ -1141,12 +1141,6 @@ int xc_vcpu_setcontext(xc_interface *xch,
     DECLARE_HYPERCALL_BOUNCE(ctxt, sizeof(vcpu_guest_context_any_t), XC_HYPERCALL_BUFFER_BOUNCE_IN);
     int rc;
 
-    if (ctxt == NULL)
-    {
-        errno = EINVAL;
-        return -1;
-    }
-
     if ( xc_hypercall_bounce_pre(xch, ctxt) )
         return -1;