Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: [PATCH V2] perf/x86/intel: Apply mid ACK for small core
To:     "Liang, Kan" <kan.liang@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>
Cc:     mingo@redhat.com, linux-kernel@vger.kernel.org,
        stable@vger.kernel.org
References: <1627997128-57891-1-git-send-email-kan.liang@linux.intel.com>
 <YQlY2o62E5A9xcdq@hirez.programming.kicks-ass.net>
 <9b0cb4ec-e8b8-3739-7b8d-e1c05785023a@linux.intel.com>
 <YQlsIvh7vwLt3f6g@hirez.programming.kicks-ass.net>
 <20f884f0-bf32-a8a0-1636-674d1b3a4715@linux.intel.com>
From:   Andi Kleen <ak@linux.intel.com>
Message-ID: <7bc98060-f22a-27f8-1bbb-bceda58319a7@linux.intel.com>
Date:   Tue, 3 Aug 2021 11:00:07 -0700
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.12.0
MIME-Version: 1.0
In-Reply-To: <20f884f0-bf32-a8a0-1636-674d1b3a4715@linux.intel.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Language: en-US
Precedence: bulk


>> Any chance that would also work for the chips that now use late_ack?
>>
>
> Let me check and do some tests.


I suspect we won't be able to test all, so we'll probably have to keep 
all three options.


-Andi