xen/x86: use INFO level for node's without memory log message

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.

Signed-off-by: Wei Chen <wei.chen@arm.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/arch/x86/srat.c b/xen/arch/x86/srat.c
index 3d02520a5ad623958509a3e5c258436ae6671f16..b62a1529111f293b88f085810d3a04e25c493fbe 100644 (file)
--- a/xen/arch/x86/srat.c
+++ b/xen/arch/x86/srat.c
@@ -555,8 +555,7 @@ 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);
        }