From: Julien Grall <julien.grall@arm.com>
Date: Mon, 11 Apr 2016 13:33:37 +0000 (+0100)
Subject: xen/arm: acpi: Print more error messages in acpi_map_gic_cpu_interface
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~1286
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https://%22%22/%22http:/www.example.com/cgi/%22https:/%22%22?a=commitdiff_plain;h=7f3f61699b990da505c70d4c716610caebb63e21;p=xen.git

xen/arm: acpi: Print more error messages in acpi_map_gic_cpu_interface

It's helpful to spot any error without having to modify the hypervisor
code.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org>
---

diff --git a/xen/arch/arm/acpi/boot.c b/xen/arch/arm/acpi/boot.c
index f3d8e7cc70..28b34507fe 100644
--- a/xen/arch/arm/acpi/boot.c
+++ b/xen/arch/arm/acpi/boot.c
@@ -63,7 +63,10 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor)
 
     total_cpus++;
     if ( !enabled )
+    {
+        printk("Skipping disabled CPU entry with 0x%"PRIx64" MPIDR\n", mpidr);
         return;
+    }
 
     if ( enabled_cpus >=  NR_CPUS )
     {
@@ -101,7 +104,11 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor)
     }
 
     if ( !acpi_psci_present() )
+    {
+        printk("PSCI not present, skipping CPU MPIDR 0x%"PRIx64"\n",
+               mpidr);
         return;
+    }
 
     if ( (rc = arch_cpu_init(enabled_cpus, NULL)) < 0 )
     {