[PATCH 1/3] arm: kvm: clamp NR_VCPUS to MAX_VCPUS
Marc Zyngier
marc.zyngier at arm.com
Sat Sep 14 08:22:16 EDT 2013
On 2013-09-14 13:14, Alexander Graf wrote:
> Am 14.09.2013 um 07:10 schrieb Andrew Jones <drjones at redhat.com>:
>
>> Signed-off-by: Andrew Jones <drjones at redhat.com>
>> ---
>> arch/arm/kvm/arm.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
>> index 741f66a2edbd7..9ebf8ac3a12ff 100644
>> --- a/arch/arm/kvm/arm.c
>> +++ b/arch/arm/kvm/arm.c
>> @@ -201,7 +201,7 @@ int kvm_dev_ioctl_check_extension(long ext)
>> r = 1;
>> break;
>> case KVM_CAP_NR_VCPUS:
>> - r = num_online_cpus();
>> + r = min(num_online_cpus(), KVM_MAX_VCPUS);
>
> Is there any real reason to prohibit overcommit?
I don't think this affects overcommit. This is the "recommended" limit,
and you can still go up to KVM_MAX_CPUS.
M.
--
Fast, cheap, reliable. Pick two.
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