diff options
| author | Igor Mammedov <imammedo@redhat.com> | 2013-04-23 10:29:40 +0200 |
|---|---|---|
| committer | Andreas Färber <afaerber@suse.de> | 2013-05-01 13:04:18 +0200 |
| commit | b8b7456d6ab7edb450ae5ec6473d3cd9a80412f4 (patch) | |
| tree | 39b1a602129be6eef297683775a074be8e0e338c /hw/i386 | |
| parent | 066e9b2710be887f435e0e899fa71f1f4314f702 (diff) | |
pc: Update rtc_cmos on CPU hot-plug
It provides updated currently available CPUs count to BIOS on reboot.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Diffstat (limited to 'hw/i386')
| -rw-r--r-- | hw/i386/pc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 29d2703330..867add7ab0 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -338,6 +338,21 @@ static void pc_cmos_init_late(void *opaque) qemu_unregister_reset(pc_cmos_init_late, opaque); } +typedef struct RTCCPUHotplugArg { + Notifier cpu_added_notifier; + ISADevice *rtc_state; +} RTCCPUHotplugArg; + +static void rtc_notify_cpu_added(Notifier *notifier, void *data) +{ + RTCCPUHotplugArg *arg = container_of(notifier, RTCCPUHotplugArg, + cpu_added_notifier); + ISADevice *s = arg->rtc_state; + + /* increment the number of CPUs */ + rtc_set_memory(s, 0x5f, rtc_get_memory(s, 0x5f) + 1); +} + void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size, const char *boot_device, ISADevice *floppy, BusState *idebus0, BusState *idebus1, @@ -346,6 +361,7 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size, int val, nb, i; FDriveType fd_type[2] = { FDRIVE_DRV_NONE, FDRIVE_DRV_NONE }; static pc_cmos_init_late_arg arg; + static RTCCPUHotplugArg cpu_hotplug_cb; /* various important CMOS locations needed by PC/Bochs bios */ @@ -384,6 +400,10 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size, /* set the number of CPU */ rtc_set_memory(s, 0x5f, smp_cpus - 1); + /* init CPU hotplug notifier */ + cpu_hotplug_cb.rtc_state = s; + cpu_hotplug_cb.cpu_added_notifier.notify = rtc_notify_cpu_added; + qemu_register_cpu_added_notifier(&cpu_hotplug_cb.cpu_added_notifier); /* set boot devices, and disable floppy signature check if requested */ if (set_boot_dev(s, boot_device, fd_bootchk)) { |