From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 2 Oct 2008 10:32:08 +0000 (+0100)
Subject: xc_ptrace: Allow gdbserver to connect to a guest before APs are
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14101^2~2
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=668349f38be79d2bd197ff968d728090f6d14faa;p=xen.git

xc_ptrace: Allow gdbserver to connect to a guest before APs are
brought online.

Signed-off-by: Kip Macy <kmacy@freebsd.org>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
---

diff --git a/tools/libxc/xc_ptrace.c b/tools/libxc/xc_ptrace.c
index 09d5c656d5..fa6c3a0ad1 100644
--- a/tools/libxc/xc_ptrace.c
+++ b/tools/libxc/xc_ptrace.c
@@ -112,17 +112,16 @@ static int
 get_online_cpumap(int xc_handle, struct xen_domctl_getdomaininfo *d,
                   uint64_t *cpumap)
 {
-    int i, online, retval;
+    int i, online;
 
     *cpumap = 0;
     for (i = 0; i <= d->max_vcpu_id; i++) {
-        if ((retval = fetch_regs(xc_handle, i, &online)))
-            return retval;
+        fetch_regs(xc_handle, i, &online);
         if (online)
             *cpumap |= (1 << i);
     }
-
-    return 0;
+    
+    return (*cpumap == 0) ? -1 : 0;
 }
 
 /*