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[70.52.229.124]) by smtp.gmail.com with ESMTPSA id d15-20020a37680f000000b0074269db4699sm4091101qkc.46.2023.04.11.10.00.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Apr 2023 10:00:20 -0700 (PDT) Date: Tue, 11 Apr 2023 13:00:19 -0400 From: Peter Xu To: Eiichi Tsukata Cc: pbonzini@redhat.com, marcandre.lureau@redhat.com, berrange@redhat.com, thuth@redhat.com, philmd@linaro.org, david@redhat.com, qemu-devel@nongnu.org Subject: Re: [PATCH] physmem: use PR_SET_VMA_ANON_NAME to set ram block name Message-ID: References: <20230411041158.66728-1-eiichi.tsukata@nutanix.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230411041158.66728-1-eiichi.tsukata@nutanix.com> Received-SPF: pass client-ip=170.10.133.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Tue, Apr 11, 2023 at 04:11:58AM +0000, Eiichi Tsukata wrote: > Use linux specific PR_SET_VMA_ANON_NAME (introduced in v5.17) to set ram > block name in the kernel. This makes each ram block distinguishable and > can help debugging and inspection. The names of ram blocks are shown in > /proc/pid/maps like this: > > 7f00e9400000-7f00f1400000 rw-p 00000000 00:00 0 [anon:pc.ram] > 7f0115200000-7f0115201000 rw-p 00000000 00:00 0 [anon:/rom@etc/acpi/rsdp] > 7f0115400000-7f0115410000 rw-p 00000000 00:00 0 [anon:/rom@etc/table-loader] > 7f0115600000-7f0115800000 rw-p 00000000 00:00 0 [anon:/rom@etc/acpi/tables] > 7f0115a00000-7f0115a40000 rw-p 00000000 00:00 0 [anon:e1000.rom] > ... > > Signed-off-by: Eiichi Tsukata Acked-by: Peter Xu -- Peter Xu