diff options
| author | Eduardo Habkost <ehabkost@redhat.com> | 2014-12-18 23:43:35 -0200 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2015-03-09 16:30:03 -0300 |
| commit | 54a402930ac6d1a9d6d402229ae8ba8bef7e598e (patch) | |
| tree | 72208efe9c89159f24014857560ab66cd189a102 /hw/i386 | |
| parent | 7e72a45c99fccfe5586d7c4e2f7441f28e24e450 (diff) | |
target-i386: Move APIC ID compatibility code to pc.c
The APIC ID compatibility code is required only for PC, and now that
x86_cpu_initfn() doesn't use x86_cpu_apic_id_from_index() anymore, that
code can be moved to pc.c.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'hw/i386')
| -rw-r--r-- | hw/i386/pc.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 79eaad5fec..b5b2aadb52 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -25,6 +25,8 @@ #include "hw/i386/pc.h" #include "hw/char/serial.h" #include "hw/i386/apic.h" +#include "hw/i386/topology.h" +#include "sysemu/cpus.h" #include "hw/block/fdc.h" #include "hw/ide.h" #include "hw/pci/pci.h" @@ -629,6 +631,39 @@ bool e820_get_entry(int idx, uint32_t type, uint64_t *address, uint64_t *length) return false; } +/* Enables contiguous-apic-ID mode, for compatibility */ +static bool compat_apic_id_mode; + +void enable_compat_apic_id_mode(void) +{ + compat_apic_id_mode = true; +} + +/* Calculates initial APIC ID for a specific CPU index + * + * Currently we need to be able to calculate the APIC ID from the CPU index + * alone (without requiring a CPU object), as the QEMU<->Seabios interfaces have + * no concept of "CPU index", and the NUMA tables on fw_cfg need the APIC ID of + * all CPUs up to max_cpus. + */ +static uint32_t x86_cpu_apic_id_from_index(unsigned int cpu_index) +{ + uint32_t correct_id; + static bool warned; + + correct_id = x86_apicid_from_cpu_idx(smp_cores, smp_threads, cpu_index); + if (compat_apic_id_mode) { + if (cpu_index != correct_id && !warned) { + error_report("APIC IDs set in compatibility mode, " + "CPU topology won't match the configuration"); + warned = true; + } + return cpu_index; + } else { + return correct_id; + } +} + /* Calculates the limit to CPU APIC ID values * * This function returns the limit for the APIC ID value, so that all |