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Groups > linux.kernel > #1621067

Re: [PATCH 6/6] KVM: perform a wake_up in kvm_make_all_cpus_request

From Paolo Bonzini <pbonzini@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH 6/6] KVM: perform a wake_up in kvm_make_all_cpus_request
Date 2017-04-11 11:20 +0200
Message-ID <tv07V-50R-29@gated-at.bofh.it> (permalink)
References <ttmcx-5J2-7@gated-at.bofh.it> <ttmcx-5J2-13@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 07/04/2017 04:20, Radim Krčmář wrote:
> I think that most requests do not need the wake up, so we would flip the
> bit then.

True.  I may need a bit more convincing, but let's see the patches:

- point against: no wakeup is a bug, possibly hard to find, while an
extra wakeup is just annoying.

- point in favor: the same argument (multiplied by over 9000) would
apply to a wait flag in the request number, but it would be obviously
stupid to add a no_wait flag to all requests except the couple that
need it.

Thanks,

Paolo

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Re: [PATCH 6/6] KVM: perform a wake_up in kvm_make_all_cpus_request Paolo Bonzini <pbonzini@redhat.com> - 2017-04-11 11:20 +0200

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