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[2403:580b:97e8:0:82ce:f179:8a79:69f4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71afc8342easm1665310b3a.11.2024.09.24.15.18.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Sep 2024 15:18:42 -0700 (PDT) From: Alistair Francis X-Google-Original-From: Alistair Francis To: qemu-devel@nongnu.org Cc: alistair23@gmail.com, Tomasz Jeznach , Frank Chang , Jason Chien , Alistair Francis , Daniel Henrique Barboza Subject: [PULL v2 14/47] exec/memtxattr: add process identifier to the transaction attributes Date: Wed, 25 Sep 2024 08:17:15 +1000 Message-ID: <20240924221751.2688389-15-alistair.francis@wdc.com> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20240924221751.2688389-1-alistair.francis@wdc.com> References: <20240924221751.2688389-1-alistair.francis@wdc.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::431; envelope-from=alistair23@gmail.com; helo=mail-pf1-x431.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Tomasz Jeznach Extend memory transaction attributes with process identifier to allow per-request address translation logic to use requester_id / process_id to identify memory mapping (e.g. enabling IOMMU w/ PASID translations). Signed-off-by: Tomasz Jeznach Reviewed-by: Frank Chang Reviewed-by: Jason Chien Reviewed-by: Alistair Francis Signed-off-by: Daniel Henrique Barboza Message-ID: <20240903201633.93182-2-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- include/exec/memattrs.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/exec/memattrs.h b/include/exec/memattrs.h index 14cdd8d582..e27c18f3dc 100644 --- a/include/exec/memattrs.h +++ b/include/exec/memattrs.h @@ -52,6 +52,11 @@ typedef struct MemTxAttrs { unsigned int memory:1; /* Requester ID (for MSI for example) */ unsigned int requester_id:16; + + /* + * PID (PCI PASID) support: Limited to 8 bits process identifier. + */ + unsigned int pid:8; } MemTxAttrs; /* Bus masters which don't specify any attributes will get this,