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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id a11sm12275795edt.26.2021.01.26.03.59.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Jan 2021 03:59:08 -0800 (PST) Subject: Re: [PATCH] perf/intel: Remove Perfmon-v4 counter_freezing support To: "Xu, Like" Cc: Like Xu , kvm@vger.kernel.org, Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Kan Liang , luwei.kang@intel.com, Thomas Gleixner , "Wang, Wei W" , Mark Gross , Srinivas Pandruvada , LKML , Peter Zijlstra , Stephane Eranian References: <20201109021254.79755-1-like.xu@linux.intel.com> <20201110151257.GP2611@hirez.programming.kicks-ass.net> <20201110153721.GQ2651@hirez.programming.kicks-ass.net> <2ce24056-0711-26b3-a62c-3bedc88d7aa7@intel.com> <9a85e154-d552-3478-6e99-3f693b3da7ed@redhat.com> <0d26d8fc-5192-afbc-abab-88dd3d428eca@intel.com> From: Paolo Bonzini Message-ID: Date: Tue, 26 Jan 2021 12:59:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <0d26d8fc-5192-afbc-abab-88dd3d428eca@intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 26/01/21 12:35, Xu, Like wrote: >> > > Ah, now we have the v3 version on guest PEBS feature. > It does not rely on counter_freezing, but disables the co-existence of > guest PEBS and host PEBS. > I am not clear about your attitude towards this co-existence. > > There are also more interesting topics for you to review and comment. > Please check > https://lore.kernel.org/kvm/20210104131542.495413-1-like.xu@linux.intel.com/ > Thanks Like, I'll review that one. Paolo