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[99.254.114.190]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-467550b2a37sm24381481cf.38.2024.12.09.11.45.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Dec 2024 11:45:50 -0800 (PST) Date: Mon, 9 Dec 2024 14:45:48 -0500 From: Peter Xu To: Steve Sistare Cc: qemu-devel@nongnu.org, Fabiano Rosas , David Hildenbrand , Marcel Apfelbaum , Eduardo Habkost , Philippe Mathieu-Daude , Paolo Bonzini , "Daniel P. Berrange" , Markus Armbruster Subject: Re: [PATCH V4 03/19] memory: add RAM_PRIVATE Message-ID: References: <1733145611-62315-1-git-send-email-steven.sistare@oracle.com> <1733145611-62315-4-git-send-email-steven.sistare@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1733145611-62315-4-git-send-email-steven.sistare@oracle.com> Received-SPF: pass client-ip=170.10.129.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.489, 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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 Mon, Dec 02, 2024 at 05:19:55AM -0800, Steve Sistare wrote: > Define the RAM_PRIVATE flag. > > In RAMBlock creation functions, if MAP_SHARED is 0 in the flags parameter, > in a subsequent patch the implementation may still create a shared mapping > if other conditions require it. Callers who specifically want a private > mapping, eg for objects specified by the user, must pass RAM_PRIVATE. > > After RAMBlock creation, MAP_SHARED in the block's flags indicates whether > the block is shared or private, and MAP_PRIVATE is omitted. > > Signed-off-by: Steve Sistare Reviewed-by: Peter Xu -- Peter Xu