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([2001:b07:6468:f312:11d7:2f21:f38b:17e]) by smtp.gmail.com with ESMTPSA id k23sm2529672wmi.46.2020.05.06.05.12.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 06 May 2020 05:12:49 -0700 (PDT) Subject: Re: [GIT PULL 0/1] KVM: s390: Fix for running nested under z/VM To: Christian Borntraeger Cc: KVM , Janosch Frank , David Hildenbrand , Cornelia Huck , linux-s390 , Claudio Imbrenda , Tony Krowiak , Pierre Morel References: <20200506115945.13132-1-borntraeger@de.ibm.com> From: Paolo Bonzini Message-ID: <918fcace-dac6-bc33-6713-19703fc96180@redhat.com> Date: Wed, 6 May 2020 14:12:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200506115945.13132-1-borntraeger@de.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 06/05/20 13:59, Christian Borntraeger wrote: > Paolo, > a fix for kvm/master. > > The following changes since commit 2a173ec993baa6a97e7b0fb89240200a88d90746: > > MAINTAINERS: add a reviewer for KVM/s390 (2020-04-20 11:24:00 +0200) > > are available in the Git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git tags/kvm-s390-master-5.7-3 > > for you to fetch changes up to 5615e74f48dcc982655543e979b6c3f3f877e6f6: > > KVM: s390: Remove false WARN_ON_ONCE for the PQAP instruction (2020-05-05 11:15:05 +0200) > > ---------------------------------------------------------------- > KVM: s390: Fix for running nested uner z/VM > > There are circumstances when running nested under z/VM that would trigger a > WARN_ON_ONCE. Remove the WARN_ON_ONCE. Long term we certainly want to make this > code more robust and flexible, but just returning instead of WARNING makes > guest bootable again. > > ---------------------------------------------------------------- > Christian Borntraeger (1): > KVM: s390: Remove false WARN_ON_ONCE for the PQAP instruction > > arch/s390/kvm/priv.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > Pulled, thanks. Paolo