Don't use cpu_index as apic_id.

(patch is on top of "Apic creation should not depend on pci" series)

Currently cpu_index is used as cpu apic id on x86.  This is incorrect
since apic ids not have to be continuous (they can also encode cpu
hierarchy information). This patch uses cpuid_apic_id for initial apic id
value. For now cpuid_apic_id is set to be equal to cpu_index so behaviour
is fully backward compatible, but it allows us to add qemu option to
provide other values for cpu apic id.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/hw/pc.c b/hw/pc.c
index dc284970e..143b697c7 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -830,6 +830,11 @@ static int load_option_rom(const char *oprom, target_phys_addr_t start,
         return size;
 }
 
+int cpu_is_bsp(CPUState *env)
+{
+	return env->cpuid_apic_id == 0;
+}
+
 /* PC hardware initialisation */
 static void pc_init1(ram_addr_t ram_size,
                      const char *boot_device,
@@ -877,6 +882,7 @@ static void pc_init1(ram_addr_t ram_size,
             exit(1);
         }
         if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
+            env->cpuid_apic_id = env->cpu_index;
             apic_init(env);
         }
         qemu_register_reset(main_cpu_reset, 0, env);