From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 14 Jan 2010 14:10:40 +0000 (+0000)
Subject: libxc: Fix IOCTL_PRIVCMD_MMAPBATCH_V2 fallback check
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~12735
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=2d8eb0f62d39abc9d1a49a808f1e69169ea23212;p=xen.git

libxc: Fix IOCTL_PRIVCMD_MMAPBATCH_V2 fallback check

privcmd_ioctl returns EINVAL if the type is not supported.
This fixes the guest booting issue caused by C/S 20791.

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Jan Beulich <jbeulich@novell.com>
---

diff --git a/tools/libxc/xc_linux.c b/tools/libxc/xc_linux.c
index e0e807f2cc..3f3bc10d95 100644
--- a/tools/libxc/xc_linux.c
+++ b/tools/libxc/xc_linux.c
@@ -180,7 +180,7 @@ void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
         }
     }
 
-    if ( rc < 0 && errno == ENOTTY && (int)num > 0 )
+    if ( rc < 0 && errno == EINVAL && (int)num > 0 )
     {
         /*
          * IOCTL_PRIVCMD_MMAPBATCH_V2 is not supported - fall back to