Re: [PATCH] fix jiffy calculations in calibrate_delay_direct to handle overflow

From: Jan Beulich
Date: Wed Feb 09 2011 - 08:18:13 EST


>>> On 09.02.11 at 10:53, Jiri Slaby <jslaby@xxxxxxx> wrote:
> On 02/09/2011 10:44 AM, Jan Beulich wrote:
>>>>> On 09.02.11 at 10:21, Jiri Slaby <jslaby@xxxxxxx> wrote:
>>> On 02/09/2011 09:31 AM, Jan Beulich wrote:
>>>> Fixes a hang when booting as dom0 under Xen, when jiffies can be
>>>> quite large by the time the kernel init gets this far.
>>>
>>> As I wrote this might happen if the boot till this point takes ~ 5
>>> minutes because we start at -5 minutes.
>>>
>>> That said, is this a candidate for stable? (If so, please CC stable.)
>>
>> Honestly, I'm not certain (given that mainline Xen Dom0 support
>> is still only in its beginnings).
>
> What about other VMs? If I run few non-kvm qemu VMs (kvm presets lpj) on
> a busy dual-core machine, this will be a problem too, right?

Yes, quite possible indeed.

Jan

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