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Fri, 30 Oct 2026 04:32:17 -0700 (PDT) Received: from hsj-2U-Workstation ([220.248.78.34]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ae845ecaf5sm3774756a91.16.2026.10.30.04.31.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Oct 2026 04:32:17 -0700 (PDT) Date: Fri, 30 Oct 2026 19:31:55 +0800 From: Huang Shijie To: Ravi Bangoria Cc: Huang Shijie , peterz@infradead.org, mingo@redhat.com, acme@kernel.org, namhyung@kernel.org, zhongyuan@hygon.cn, fangbaoshun@hygon.cn, yingzhiwei@hygon.cn, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com, james.clark@linaro.org, tglx@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, liuqi@hygon.cn, lijing@hygon.cn, wangfengyu@hygon.cn, wujianyong@hygon.cn, 1537577747@qq.com Subject: Re: [PATCH] perf/amd/ibs: add phy_addr_only software filter for ibs_op Message-ID: References: <20260902085251.4046240-1-huangsj@hygon.cn> X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: 在 Fri, Oct 30, 2026 at 09:45:03AM +0530，Ravi Bangoria 写道： > > The BPF filter is giving more accurate data here because neither kernel > nor userspace should access the first physical page: > > $ sudo head -1 /proc/iomem > 00000000-00000fff : Reserved Yes. But I can change the patch to skip the first physical page too. Thanks Huang Shijie