[PATCH v4 8/8] xen/x86: use INFO level for node's without memory log message

[Wei Chen <wei.chen@xxxxxxx>]

In previous code, Xen was using KERN_WARNING for log message
when Xen found a node without memory. Xen will print this
warning message, and said that this may be an BIOS Bug or
mis-configured hardware. But actually, this warning is bogus,
because in an NUMA setting, nodes can only have processors,
and with 0 bytes memory. So it is unreasonable to warn about
BIOS or hardware corruption based on the detection of node
with 0 bytes memory.

So in this patch, we remove the warning messages, but just
keep an info message to info users that there is one or more
nodes with 0 bytes memory in the system.

Issue-Id: SCM-2240
Change-Id: I922a5f17e8d7e9d250a70eb3f703dabe4698027a
Signed-off-by: Wei Chen <wei.chen@xxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
v3 -> v4:
1. Remove full stop and use lower-case for node.
2. Add Rb.
v2 -> v3:
new commit.
---
 xen/arch/x86/srat.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xen/arch/x86/srat.c b/xen/arch/x86/srat.c
index a831df7648..5bd6279920 100644
--- a/xen/arch/x86/srat.c
+++ b/xen/arch/x86/srat.c
@@ -562,8 +562,7 @@ int __init acpi_scan_nodes(paddr_t start, paddr_t end)
                uint64_t size = nodes[i].end - nodes[i].start;
 
                if ( size == 0 )
-                       printk(KERN_WARNING "SRAT: Node %u has no memory. "
-                              "BIOS Bug or mis-configured hardware?\n", i);
+                       printk(KERN_INFO "SRAT: node %u has no memory\n", i);
 
                setup_node_bootmem(i, nodes[i].start, nodes[i].end);
        }
-- 
2.25.1