Re: [patch] KVM: T60 resume fix

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Michael S. Tsirkin wrote:
Quoting Ingo Molnar <mingo@xxxxxxx>:
Subject: [patch] KVM: T60 resume fix
From: Ingo Molnar <mingo@xxxxxxx>

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@xxxxxxx>

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.

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