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[35.185.214.157]) by smtp.gmail.com with ESMTPSA id b1sm3951150pjl.4.2021.09.16.15.30.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Sep 2021 15:30:49 -0700 (PDT) Date: Thu, 16 Sep 2021 22:30:45 +0000 From: Sean Christopherson To: Peter Zijlstra Cc: Ingo Molnar , Arnaldo Carvalho de Melo , Will Deacon , Mark Rutland , Catalin Marinas , Marc Zyngier , Guo Ren , Nick Hu , Greentime Hu , Vincent Chen , Paul Walmsley , Palmer Dabbelt , Albert Ou , Thomas Gleixner , Borislav Petkov , x86@kernel.org, Paolo Bonzini , Boris Ostrovsky , Juergen Gross , Alexander Shishkin , Jiri Olsa , Namhyung Kim , James Morse , Alexandru Elisei , Suzuki K Poulose , "H. Peter Anvin" , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Stefano Stabellini , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-csky@vger.kernel.org, linux-riscv@lists.infradead.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, Artem Kashkanov , Like Xu , Zhu Lingshan Subject: Re: [PATCH v2 05/13] perf: Force architectures to opt-in to guest callbacks Message-ID: References: <20210828003558.713983-1-seanjc@google.com> <20210828003558.713983-6-seanjc@google.com> <20210828194752.GC4353@worktop.programming.kicks-ass.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210828194752.GC4353@worktop.programming.kicks-ass.net> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210916_153052_171319_E13FEAEE X-CRM114-Status: GOOD ( 15.71 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Sat, Aug 28, 2021, Peter Zijlstra wrote: > On Fri, Aug 27, 2021 at 05:35:50PM -0700, Sean Christopherson wrote: > > diff --git a/init/Kconfig b/init/Kconfig > > index 55f9f7738ebb..9ef51ae53977 100644 > > --- a/init/Kconfig > > +++ b/init/Kconfig > > @@ -1776,6 +1776,9 @@ config HAVE_PERF_EVENTS > > help > > See tools/perf/design.txt for details. > > > > +config HAVE_GUEST_PERF_EVENTS > > + bool > depends on HAVE_KVM > > ? Ah, nice! We can go even further to: depends on HAVE_PERF_EVENTS && HAVE_KVM though I'm pretty sure all architectures that select HAVE_KVM also select HAVE_PERF_EVENTS. Huh. arm64 doesn't select HAVE_KVM even though it selects almost literally every other HAVE_KVM_* config. arm64 has some other weirdness with CONFIG_KVM, I'll add a patch or two to fix that stuff and amend this patch as above. Thanks again! _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv