From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Gleb Natapov <gleb@kernel.org>, Paolo Bonzini <pbonzini@redhat.com>
Cc: KVM <kvm@vger.kernel.org>,
linux-s390 <linux-s390@vger.kernel.org>,
Cornelia Huck <cornelia.huck@de.ibm.com>,
Michael Mueller <mimu@linux.vnet.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>
Subject: [PATCH/RFC 0/3] KVM: yield heuristic improvements
Date: Tue, 11 Feb 2014 12:45:29 +0100 [thread overview]
Message-ID: <1392119132-50182-1-git-send-email-borntraeger@de.ibm.com> (raw)
Paolo, Gleb,
here are 3 patches that improve the s390 guest performance on contended
systems. Basic idea is to also allow yielding to CPUs which still sleep
but are runnable. The patch set should be no-ops for !s390.
Michael Mueller (3):
kvm: Introduction of kvm_arch_vcpu_dont_yield()
s390/kvm: Platform specific kvm_arch_vcpu_dont_yield
s390/kvm: Set preempted flag during vcpu wakeup and interrupt delivery
arch/s390/kvm/Kconfig | 1 +
arch/s390/kvm/interrupt.c | 3 +++
arch/s390/kvm/kvm-s390.c | 7 +++++++
include/linux/kvm_host.h | 9 +++++++++
virt/kvm/Kconfig | 3 +++
virt/kvm/kvm_main.c | 2 +-
6 files changed, 24 insertions(+), 1 deletion(-)
--
1.8.4.2
next reply other threads:[~2014-02-11 11:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-11 11:45 Christian Borntraeger [this message]
2014-02-11 11:45 ` [PATCH/RFC 1/3] kvm: Introduction of kvm_arch_vcpu_dont_yield() Christian Borntraeger
2014-02-11 11:45 ` [PATCH/RFC 2/3] s390/kvm: Platform specific kvm_arch_vcpu_dont_yield Christian Borntraeger
2014-02-13 22:37 ` Paolo Bonzini
2014-02-13 22:54 ` Christian Borntraeger
2014-02-13 23:32 ` Paolo Bonzini
2014-02-14 9:55 ` Christian Borntraeger
2014-02-14 9:56 ` Paolo Bonzini
2014-02-24 14:22 ` Michael Mueller
2014-02-11 11:45 ` [PATCH/RFC 3/3] s390/kvm: Set preempted flag during vcpu wakeup and interrupt delivery Christian Borntraeger
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