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Wed, 19 Jul 2023 19:33:18 -0700 (PDT) Received: from tjeznach.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id w5-20020a1709029a8500b001b9e9f191f2sm4692032plp.15.2023.07.19.19.33.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Jul 2023 19:33:17 -0700 (PDT) From: Tomasz Jeznach To: Alistair Francis , Bin Meng , Palmer Dabbelt , Paolo Bonzini Cc: Daniel Henrique Barboza , =?utf-8?q?Daniel_P_?= =?utf-8?q?=2E_Berrang=C3=A9?= , Liu Zhiwei , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Thomas Huth , Weiwei Li , qemu-devel@nongnu.org, qemu-riscv@nongnu.org, linux@rivosinc.com, Tomasz Jeznach Subject: [PATCH 3/5] exec/memtxattr: add process identifier to the transaction attributes Date: Wed, 19 Jul 2023 19:32:56 -0700 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62c; envelope-from=tjeznach@rivosinc.com; helo=mail-pl1-x62c.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 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 --- include/exec/memattrs.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/exec/memattrs.h b/include/exec/memattrs.h index d04170aa27..61c2dfac14 100644 --- a/include/exec/memattrs.h +++ b/include/exec/memattrs.h @@ -64,6 +64,12 @@ typedef struct MemTxAttrs { unsigned int target_tlb_bit0 : 1; unsigned int target_tlb_bit1 : 1; unsigned int target_tlb_bit2 : 1; + + /* + * PCI PASID support: Limited to 8 bits process identifier. + */ + unsigned int pasid:8; + } MemTxAttrs; /* Bus masters which don't specify any attributes will get this,