From: "Li, ZhenHua" <zhen-hual@hp.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Igor Mammedov <imammedo@redhat.com>,
qemu-devel@nongnu.org, Eduardo Habkost <ehabkost@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/4] Support more than 255 cpus
Date: Thu, 15 May 2014 15:16:03 +0800 [thread overview]
Message-ID: <537469B3.4030807@hp.com> (raw)
In-Reply-To: <5371F990.30604@siemens.com>
Kernel's kvm support is not here.
x2APIC is needed, I will try to do that later.
On 05/13/2014 06:53 PM, Jan Kiszka wrote:
> On 2014-05-13 09:09, Li, Zhen-Hua wrote:
>> From: "Li, ZhenHua" <zhen-hual@hp.com>
>>
>> These series patches are trying to make Qemu support more than 255 CPUs.
>> The max cpu number changed to 4096.
>>
>> Support more than 255 cpus: ACPI and APIC defines
>> Support more than 255 cpus: max_cpus to 4096
>> Support more than 255 cpus: max cpumask bit to 4096
>> Support more than 255 cpus: runtime chec
>>
>> include/hw/acpi/cpu_hotplug_defs.h | 4 ++--
>> include/hw/i386/apic_internal.h | 2 +-
>> include/hw/i386/pc.h | 2 +-
>> include/sysemu/sysemu.h | 2 +-
>> hw/i386/acpi-build.c | 8 ++++----
> Don't we need x2APIC support to provide >255 CPUs? Where so you enforce
> this, i.e. keep the restriction to 255 CPUs when we are not in KVM mode
> with in-kernel APIC (the emulate APIC lacks x2APIC mode, unfortunately)?
> But, wait, KVM only supports up to 255 VCPUs. So what are you targeting at?
>
> Jan
>
next prev parent reply other threads:[~2014-05-15 7:17 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-13 7:09 [Qemu-devel] [PATCH 0/4] Support more than 255 cpus Li, Zhen-Hua
2014-05-13 7:09 ` [Qemu-devel] [PATCH 1/4] Support more than 255 cpus: ACPI and APIC defines Li, Zhen-Hua
2014-05-13 7:09 ` [Qemu-devel] [PATCH 2/4] Support more than 255 cpus: max_cpus to 4096 Li, Zhen-Hua
2014-05-13 7:09 ` [Qemu-devel] [PATCH 3/4] Support more than 255 cpus: max cpumask bit " Li, Zhen-Hua
2014-05-13 7:09 ` [Qemu-devel] [PATCH 4/4] Support more than 255 cpus: runtime check Li, Zhen-Hua
2014-05-13 8:19 ` Max Filippov
2014-05-15 7:16 ` Li, ZhenHua
2014-05-15 12:36 ` Max Filippov
2014-05-13 9:12 ` [Qemu-devel] [PATCH 0/4] Support more than 255 cpus Andreas Färber
2014-05-13 10:53 ` Jan Kiszka
2014-05-15 7:16 ` Li, ZhenHua [this message]
2014-05-15 8:35 ` Jan Kiszka
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