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From: Oliver Upton To: Raghavendra Rao Ananta Cc: Marc Zyngier , Alexandru Elisei , James Morse , Suzuki K Poulose , Paolo Bonzini , Zenghui Yu , Shaoqin Huang , Jing Zhang , Reiji Watanabe , Colton Lewis , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [PATCH v8 13/13] KVM: selftests: aarch64: vPMU test for immutability Message-ID: References: <20231020214053.2144305-1-rananta@google.com> <20231020214053.2144305-14-rananta@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231020214053.2144305-14-rananta@google.com> X-Migadu-Flow: FLOW_OUT X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Tue, 24 Oct 2023 03:37:30 -0700 (PDT) On Fri, Oct 20, 2023 at 09:40:53PM +0000, Raghavendra Rao Ananta wrote: > KVM marks some of the vPMU registers as immutable to > userspace once the vCPU has started running. Add a test > scenario to check this behavior. > > Signed-off-by: Raghavendra Rao Ananta Now that PMCR_EL0.N is the only thing that's getting the immutability treatment this patch fails. I'll probably drop it. -- Thanks, Oliver