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[79.37.206.118]) by smtp.gmail.com with ESMTPSA id t6sm2319933edd.3.2021.07.15.05.31.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Jul 2021 05:31:48 -0700 (PDT) Subject: Re: 5.13-rt1 + KVM = WARNING: at fs/eventfd.c:74 eventfd_signal() To: Hillf Danton Cc: Paolo Bonzini , Jason Wang , Thomas Gleixner , Sebastian Andrzej Siewior , "Michael S. Tsirkin" , Juri Lelli , LKML , Al Viro , He Zhe References: <8dfc0ee9-b97a-8ca8-d057-31c8cad3f5b6@redhat.com> <475f84e2-78ee-1a24-ef57-b16c1f2651ed@redhat.com> <20210715102249.2205-1-hdanton@sina.com> From: Daniel Bristot de Oliveira Message-ID: <92933731-46aa-b5d8-72dd-0d05c0266f45@redhat.com> Date: Thu, 15 Jul 2021 14:31:46 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210715102249.2205-1-hdanton@sina.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/15/21 12:22 PM, Hillf Danton wrote: >> the lock needs to be per-pcu... but so far, so good. I will continue using the >> system in the next days to see if it blows on another way. > Curiou, is it so good as to see the warning no longer printed? Or your > box still works even with the warning in log? > Without the patch: - warn on dmesg - I lose my connection with VM (as a side effect) With the patch: - no warn - continue using the VM normally... -- Daniel