From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39174) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bPt7t-0005ZT-62 for qemu-devel@nongnu.org; Wed, 20 Jul 2016 11:09:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bPt7n-0004GY-A5 for qemu-devel@nongnu.org; Wed, 20 Jul 2016 11:09:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39692) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bPt7n-0004GT-3l for qemu-devel@nongnu.org; Wed, 20 Jul 2016 11:09:27 -0400 From: Eduardo Habkost Date: Wed, 20 Jul 2016 12:08:22 -0300 Message-Id: <1469027314-31655-17-git-send-email-ehabkost@redhat.com> In-Reply-To: <1469027314-31655-1-git-send-email-ehabkost@redhat.com> References: <1469027314-31655-1-git-send-email-ehabkost@redhat.com> Subject: [Qemu-devel] [PULL 16/28] pc: Delay setting number of boot CPUs to machine_done time List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell Cc: Paolo Bonzini , Richard Henderson , qemu-devel@nongnu.org, Igor Mammedov From: Igor Mammedov Currently present CPUs counter in CMOS only contains smp_cpus (i.e. initial CPUs specified with -smp X) and doesn't account for CPUs created with -device. If VM is started with additional CPUs added with -device, it will hang in BIOS waiting for condition smp_cpus == counted_cpus forever as counted_cpus will include -device CPUs as well and be more than smp_cpus. Make present CPUs counter in CMOS to count all CPUs (initial and coldplugged with -device) by delaying it to machine done time when it possible to count CPUs added with -device. Signed-off-by: Igor Mammedov --- hw/i386/pc.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 72454fb..669382f 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -471,9 +471,6 @@ void pc_cmos_init(PCMachineState *pcms, rtc_set_memory(s, 0x5c, val >> 8); rtc_set_memory(s, 0x5d, val >> 16); - /* set the number of CPU */ - rtc_set_memory(s, 0x5f, smp_cpus - 1); - object_property_add_link(OBJECT(pcms), "rtc_state", TYPE_ISA_DEVICE, (Object **)&pcms->rtc, @@ -1090,6 +1087,17 @@ void pc_acpi_smi_interrupt(void *opaque, int irq, int level) } } +static int pc_present_cpus_count(PCMachineState *pcms) +{ + int i, boot_cpus = 0; + for (i = 0; i < pcms->possible_cpus->len; i++) { + if (pcms->possible_cpus->cpus[i].cpu) { + boot_cpus++; + } + } + return boot_cpus; +} + static X86CPU *pc_new_cpu(const char *typename, int64_t apic_id, Error **errp) { @@ -1240,6 +1248,9 @@ void pc_machine_done(Notifier *notifier, void *data) PCMachineState, machine_done); PCIBus *bus = pcms->bus; + /* set the number of CPUs */ + rtc_set_memory(pcms->rtc, 0x5f, pc_present_cpus_count(pcms) - 1); + if (bus) { int extra_hosts = 0; -- 2.5.5