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 f3d8e7cc7066fb9958b92edc5adcd1e14277bbed..28b34507fead11dac0189d4244e0ea59f84fc239 100644 (file)
--- 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 )
     {