From 436a001a5a28b9e3dd0988cc5a88bd3d7ec0acc8 Mon Sep 17 00:00:00 2001
From: Andrew Jones <drjones@redhat.com>
Date: Tue, 31 Mar 2015 11:08:11 +0200
Subject: [PATCH] detect-virt: use /proc/device-tree

Kernel doc Documentation/ABI/testing/sysfs-firmware-ofw says that
the /proc/device-tree symlink should be used, as opposed to
directly accessing /sys/firmware/devicetree/base. The former is
ABI, but not the later.

Cherry-picked from: b8f1df82646d2
Resolves: #1207773
---
 src/shared/virt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/shared/virt.c b/src/shared/virt.c
index 7c1381f..aa3501f 100644
--- a/src/shared/virt.c
+++ b/src/shared/virt.c
@@ -106,7 +106,7 @@ static int detect_vm_devicetree(const char **_id) {
         _cleanup_free_ char *hvtype = NULL;
         int r;
 
-        r = read_one_line_file("/sys/firmware/devicetree/base/hypervisor/compatible", &hvtype);
+        r = read_one_line_file("/proc/device-tree/hypervisor/compatible", &hvtype);
         if (r >= 0) {
                 if (streq(hvtype, "linux,kvm")) {
                         *_id = "kvm";