From: Jan Beulich <jbeulich@suse.com>
Date: Fri, 10 Dec 2021 09:25:12 +0000 (+0100)
Subject: libxc: correct bounce direction in xc_get_device_group()
X-Git-Tag: archive/raspbian/4.17.0-1+rpi1^2~33^2~1238
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=22592f1c5e789e4606f0a6fb88e5f1244a8384c9;p=xen.git

libxc: correct bounce direction in xc_get_device_group()

The array of IDs is an output.

Fixes: 79647c5bc9c6 ("libxc: convert domctl interfaces over to hypercall buffers")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
---

diff --git a/tools/libs/ctrl/xc_domain.c b/tools/libs/ctrl/xc_domain.c
index b155d6afd2..20b86d986c 100644
--- a/tools/libs/ctrl/xc_domain.c
+++ b/tools/libs/ctrl/xc_domain.c
@@ -1546,7 +1546,8 @@ int xc_get_device_group(
 {
     int rc;
     DECLARE_DOMCTL;
-    DECLARE_HYPERCALL_BOUNCE(sdev_array, max_sdevs * sizeof(*sdev_array), XC_HYPERCALL_BUFFER_BOUNCE_IN);
+    DECLARE_HYPERCALL_BOUNCE(sdev_array, max_sdevs * sizeof(*sdev_array),
+                             XC_HYPERCALL_BUFFER_BOUNCE_OUT);
 
     if ( xc_hypercall_bounce_pre(xch, sdev_array) )
     {