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From: Christian Borntraeger <borntraeger@de.ibm.com>
To: stable@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Cc: gregkh@linuxfoundation.org, KVM <kvm@vger.kernel.org>,
	"Cornelia Huck" <cohuck@redhat.com>,
	"Christian Borntraeger" <borntraeger@de.ibm.com>,
	"Janosch Frank" <frankja@linux.ibm.com>,
	"David Hildenbrand" <david@redhat.com>,
	linux-s390 <linux-s390@vger.kernel.org>,
	"Thomas Huth" <thuth@redhat.com>,
	"Claudio Imbrenda" <imbrenda@linux.ibm.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Nitesh Narayan Lal" <nitesh@redhat.com>,
	"Halil Pasic" <pasic@linux.ibm.com>
Subject: [PATCH 0/1] KVM: s390: backport for stable of "KVM: s390: index
Date: Mon, 20 Sep 2021 17:06:15 +0200	[thread overview]
Message-ID: <20210920150616.15668-1-borntraeger@de.ibm.com> (raw)

Stable team,

here is a backport for 4.19 of
commit a3e03bc1368 ("KVM: s390: index kvm->arch.idle_mask by vcpu_idx")
This basically removes the kick_mask parts that were introduced with
kernel 5.0 and fixes up the location of the idle_mask to the older
place.

FWIW, it might be a good idea to also backport
8750e72a79dd ("KVM: remember position in kvm->vcpus array") to avoid
a performance regression for large guests (many vCPUs) when this patch
is applied. 
@Paolo Bonzini, would you be ok with 8750e72a79dd in older stable releases?



Halil Pasic (1):
  KVM: s390: index kvm->arch.idle_mask by vcpu_idx

 arch/s390/kvm/interrupt.c | 4 ++--
 arch/s390/kvm/kvm-s390.h  | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

-- 
2.31.1


             reply	other threads:[~2021-09-20 15:06 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20 15:06 Christian Borntraeger [this message]
2021-09-20 15:06 ` [PATCH 1/1] KVM: s390: index kvm->arch.idle_mask by vcpu_idx Christian Borntraeger
2021-09-21  2:43   ` Halil Pasic
2021-09-20 15:24 ` [PATCH 0/1] KVM: s390: backport for stable of "KVM: s390: index Greg KH
2021-09-20 15:30   ` Christian Borntraeger
2021-09-20 18:05 ` Paolo Bonzini
2021-09-21  8:46   ` Christian Borntraeger
2021-09-21 13:04     ` Paolo Bonzini

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