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Fri, 12 Dec 2025 18:03:24 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id nHH7NuxYPGkTCQAAD6G6ig (envelope-from ); Fri, 12 Dec 2025 18:03:24 +0000 From: Fabiano Rosas To: Tao Tang , Paolo Bonzini , Laurent Vivier , Eric Auger , Peter Maydell , Alex =?utf-8?Q?Benn=C3=A9e?= Cc: qemu-devel@nongnu.org, qemu-arm@nongnu.org, Chen Baozi , Pierrick Bouvier , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , Jean-Philippe Brucker , Mostafa Saleh , CLEMENT MATHIEU--DRIF , Tao Tang Subject: Re: [RFC v6 3/4] tests/qtest/libqos: Add SMMUv3 helper library In-Reply-To: <20251206155203.3015881-4-tangtao1634@phytium.com.cn> References: <20251206155203.3015881-1-tangtao1634@phytium.com.cn> <20251206155203.3015881-4-tangtao1634@phytium.com.cn> Date: Fri, 12 Dec 2025 15:03:22 -0300 Message-ID: <87pl8jvaqd.fsf@suse.de> MIME-Version: 1.0 Content-Type: text/plain X-Spamd-Result: default: False [-4.27 / 50.00]; BAYES_HAM(-2.97)[99.87%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.994]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; MISSING_XM_UA(0.00)[]; RCVD_TLS_ALL(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCPT_COUNT_TWELVE(0.00)[15]; FUZZY_RATELIMITED(0.00)[rspamd.com]; MID_RHS_MATCH_FROM(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid, suse.de:email, phytium.com.cn:email] Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:1; envelope-from=farosas@suse.de; helo=smtp-out1.suse.de 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@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-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Tao Tang writes: > Introduce qos-smmuv3, a reusable library for SMMUv3-related qtest > operations. This module encapsulates common tasks like: > > - SMMUv3 initialization (enabling, configuring command/event queues) > - Stream Table Entry (STE) and Context Descriptor (CD) setup > - Multi-level page table construction (L0-L3 for 4KB granules) > - Support for Stage 1, Stage 2, and nested translation modes > - Could be easily extended to support multi-space testing infrastructure > (Non-Secure, Secure, Root, Realm) > > The library provides high-level abstractions that allow test code to > focus on IOMMU behavior validation rather than low-level register > manipulation and page table encoding. Key features include: > > - Automatic memory allocation for translation structures with proper > alignment > - Helper functions to build valid STEs/CDs for different translation > scenarios > - Page table walkers that handle address offset calculations per > security space > - Command queue management for SMMU configuration commands > > This infrastructure is designed to be used by iommu-testdev-based tests > and future SMMUv3 test suites, reducing code duplication and improving > test maintainability. > > Signed-off-by: Tao Tang To the best of my ability: Reviewed-by: Fabiano Rosas