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Re: [patch] KVM: T60 resume fix

From
AKAvi Kivity <avi@qumranet.com>
Date
Mar 3, 2007, 08:22 UTC
Message-ID
<45E93035.2070509@qumranet.com>
In-Reply-To
<20070302113920.GB9367@mellanox.co.il>
Michael S. Tsirkin wrote:
Show 21 quoted lines
>> Quoting Ingo Molnar <mingo@elte.hu>:
>> Subject: [patch] KVM: T60 resume fix
>> From: Ingo Molnar <mingo@elte.hu>
>>
>> my T60 laptop does not resume correctly due to KVM attempting to send an 
>> IPI to a CPU that might be down (or not up yet). (Doing so also triggers 
>> the send_IPI_mask_bitmask() warning in arch/i386/kernel/smp.c, line 
>> 732.)
>>
>> with this fix applied my laptop does not hang during resume.
>>
>> [ KVM will have to disable/enable virtualization on the CPU itself that
>>   goes down / comes up, not via an IPI sent from the requesting CPU. ]
>>
>> Signed-off-by: Ingo Molnar <mingo@elte.hu>
>>     
>
> Since I don't normally have kvm loaded, this patch is unlikely
> to help me, is that right?
>
>   
That is correct.
-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
Previous: Michael S. TsirkinNext: Avi Kivity
Message 5 of 16 in “Re: 2.6.21-rc1: known regressions (part 2)”
  1. Ingo MolnarMar 2, 2007
  2. Ingo MolnarMar 2, 2007
  3. KVM: T60 resume fixIngo Molnar, Mar 2, 2007
  4. Michael S. TsirkinMar 2, 2007
  5. Avi KivityMar 3, 2007
  6. Avi KivityMar 3, 2007
  7. Andrew MortonMar 3, 2007
  8. Ingo MolnarMar 5, 2007
  9. Michael S. TsirkinMar 5, 2007
  10. Ingo MolnarMar 5, 2007
  11. Linus TorvaldsMar 2, 2007
  12. Ingo MolnarMar 5, 2007
  13. Michael S. TsirkinMar 5, 2007
  14. Michael S. TsirkinMar 5, 2007
  15. Ingo MolnarMar 5, 2007
  16. Jens AxboeMar 5, 2007

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