x86/cpuidle: Change logging for unknown APIC IDs

Dom0 uses this hypercall to pass ACPI information to Xen.  It is not very
uncommon for more cpus to be listed in the ACPI tables than are present on the
system, particularly on systems with a common BIOS for a 2 and 4 socket server
varients.

As Dom0 does not control the number of entries in the ACPI tables, and is
required to pass everything it finds to Xen, change the logging.

There is now an single unconditional warning for the first unknown ID, and
further warnings if "cpuinfo" is requested by the user on the command line.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
master commit: 85047d9e4f4afeb73bca1e98f705a2f4f1d51c03
master date: 2013-07-17 08:45:20 +0200

diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
index 3fde934194779429292bf68abe20a180f5f14041..c3141a571bb97030ed6d278e08d4855e5205c27f 100644 (file)
--- a/xen/arch/x86/acpi/cpu_idle.c
+++ b/xen/arch/x86/acpi/cpu_idle.c
@@ -994,7 +994,10 @@ long set_cx_pminfo(uint32_t cpu, struct xen_processor_power *power)
     cpu_id = get_cpu_id(cpu);
     if ( cpu_id == -1 )
     {
-        printk(XENLOG_ERR "no cpu_id for acpi_id %d\n", cpu);
+        static bool_t warn_once = 1;
+        if ( warn_once || opt_cpu_info )
+            printk(XENLOG_WARNING "No CPU ID for APIC ID %#x\n", cpu);
+        warn_once = 0;
         return -EINVAL;
     }
 

diff --git a/xen/arch/x86/cpu/common.c b/xen/arch/x86/cpu/common.c
index a3a6b96d5e240f73a3863ecf825d893e9b96e16c..c5237f03a8c70367a9b417d5faefe2d0c6caa46b 100644 (file)
--- a/xen/arch/x86/cpu/common.c
+++ b/xen/arch/x86/cpu/common.c
@@ -79,7 +79,7 @@ static struct cpu_dev default_cpu = {
 };
 static struct cpu_dev * this_cpu = &default_cpu;
 
-bool_t __cpuinitdata opt_cpu_info;
+bool_t opt_cpu_info;
 boolean_param("cpuinfo", opt_cpu_info);
 
 int __cpuinit get_model_name(struct cpuinfo_x86 *c)