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[81.2.115.145]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435e10edf62sm16762185f8f.13.2026.01.29.08.09.57 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Jan 2026 08:09:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1769702998; x=1770307798; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=u3uV6GSWr+BEGrx5YGtZDjy8LLlQ8HkEC6LhLpQIb3I=; b=onP+s88xHsCmQ8HOso8d9j4hpl1eKYEvZUPfKoQ/Z3Fw4hJDdhi823cwml35l8zgso LJnXo7NhdEpkKSuESSKShAZUvI/Yuj3G85qg2oQL3HX6dCTApFqEA2IId3To0/AEJvrJ mlsJifApNVxey67Den87VrZyIp4ibjg7tudNZbNN8jb8LhCBHmrhiwR5iCHM72r3pLsY FAfBtPOKRYqlgF2RAR+VLKiWx85EzMrkppyCTJkoIX2kuwSSEKXcTMSlMBJ9vTIZYSNV rL0KjQZ+HJuXQ+GJTMTihl7U44Nqq9QlYoLL1j7dOkvzH7KzKrRpwAqKJgZEzCYoXdzo bbbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769702998; x=1770307798; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=u3uV6GSWr+BEGrx5YGtZDjy8LLlQ8HkEC6LhLpQIb3I=; b=eJZer+o9Av5JC4M/TDJw4GooiO0KSV7JX2PSm7e3u8pQKBV/w9NVOftI5lbm7V4Zm7 XQpla5NEN7aWDy5+hCgAfqOnqUdQR5gtOZ0MR/VqO8GkCdEoMjz5XRVPLej1Y65BLIV2 72+Y06Tf90ecE+k4UNyegkfqQhOM7oz0Nk4kPI4Fb6QeNa8/uichttCi4YmjTs8/69fu Z8ktWByy67XWobD5jxGxBMzJt+fm3UyJGLByBhCTB8OUtFcI0nM4z+/MbtfhIvXxRDFL eiI8NCQvm9r1bVZogI9u9k0ZXcNPFLWgVkBn1iyPL4O+Qca4X6q71E3psjF1iW+IkxCZ bCAg== X-Gm-Message-State: AOJu0Yyb+yT057qnuebN3lhEJJzzJNlrW+fQ27QVL4E7Wpn/k8ZGatuW lRWGw8sQbWv6HKQiKVvBJe3slevjIwzK8plszxxvx6b4jadRAHA7CYkd8R/olkHLGvbq1ufckQ1 2Vqfue2U= X-Gm-Gg: AZuq6aKNYwS2lnoMjlwsfL8QTmL7kUpTcpTw4Y7IfzHCVDQ71Fn4QyqrIFRTpi7eChc zlU/tbEonNaTU/gXGRBJT10QJ7anWWSvCbA2e8NJSN9A4vaZBqiYebzqo4mhgrh0RX+cd3ALjGF PQvndwbYRZCOQSJm/+LIJB2OYUyHdNsSES1cAI+zEp6gFUaX0ims6MAaRUPXMQY8I3/13GyAEeZ 9WElDr84botcc8gc6ag349WQ7Kru6/w7vdk/drf0f17itEoS2+wkf4aQr10oS65I/ETrCehX+/r QIGIDemS5AlQpkK1nmuIz8pJ/VDjoHYgZeyY2S7gn+xccQ5ICFBMGMdlPNeTE4lA87gc6H0UoiY aUz57q6/V8zzFvrpmZ2Ob+2ep5n8xzvXzhF1JAvFsewq8/4qzi1L1KAxz8wjIZYkw/FnR0mXc+n A3Fs3os1zGIbe8sNoWRNxwoVZjOew/5g== X-Received: by 2002:a05:600c:8208:b0:47d:92bb:2723 with SMTP id 5b1f17b1804b1-48069bfa957mr118140905e9.3.1769702998389; Thu, 29 Jan 2026 08:09:58 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 33/43] backends/iommufd: Add get_pasid_info() callback Date: Thu, 29 Jan 2026 16:09:07 +0000 Message-ID: <20260129160917.1415092-34-peter.maydell@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260129160917.1415092-1-peter.maydell@linaro.org> References: <20260129160917.1415092-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::333; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x333.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1769703076648154100 Content-Type: text/plain; charset="utf-8" From: Shameer Kolothum The get_pasid_info callback retrieves PASID capability information when the HostIOMMUDevice backend supports it. Currently, only the Linux IOMMUFD backend provides this information. This will be used by a subsequent patch to synthesize a PASID capability for vfio-pci devices behind a vIOMMU that supports PASID. Reviewed-by: Jonathan Cameron Reviewed-by: Eric Auger Tested-by: Eric Auger Tested-by: Zhangfei Gao Reviewed-by: Nicolin Chen Signed-off-by: Shameer Kolothum Reviewed-by: Yi Liu Message-id: 20260126104342.253965-34-skolothumtho@nvidia.com Signed-off-by: Peter Maydell --- backends/iommufd.c | 17 +++++++++++++++++ include/system/host_iommu_device.h | 17 +++++++++++++++++ 2 files changed, 34 insertions(+) diff --git a/backends/iommufd.c b/backends/iommufd.c index 9b63d74083..13822df82f 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -539,11 +539,28 @@ static int hiod_iommufd_get_cap(HostIOMMUDevice *hiod= , int cap, Error **errp) } } =20 +static bool hiod_iommufd_get_pasid_info(HostIOMMUDevice *hiod, + PasidInfo *pasid_info) +{ + HostIOMMUDeviceCaps *caps =3D &hiod->caps; + + if (!caps->max_pasid_log2) { + return false; + } + + g_assert(pasid_info); + pasid_info->exec_perm =3D (caps->hw_caps & IOMMU_HW_CAP_PCI_PASID_EXEC= ); + pasid_info->priv_mod =3D (caps->hw_caps & IOMMU_HW_CAP_PCI_PASID_PRIV); + pasid_info->max_pasid_log2 =3D caps->max_pasid_log2; + return true; +} + static void hiod_iommufd_class_init(ObjectClass *oc, const void *data) { HostIOMMUDeviceClass *hioc =3D HOST_IOMMU_DEVICE_CLASS(oc); =20 hioc->get_cap =3D hiod_iommufd_get_cap; + hioc->get_pasid_info =3D hiod_iommufd_get_pasid_info; }; =20 static const TypeInfo types[] =3D { diff --git a/include/system/host_iommu_device.h b/include/system/host_iommu= _device.h index bfb2b60478..f000301583 100644 --- a/include/system/host_iommu_device.h +++ b/include/system/host_iommu_device.h @@ -59,6 +59,12 @@ struct HostIOMMUDevice { #endif }; =20 +typedef struct PasidInfo { + bool exec_perm; + bool priv_mod; + uint8_t max_pasid_log2; +} PasidInfo; + /** * struct HostIOMMUDeviceClass - The base class for all host IOMMU devices. * @@ -116,6 +122,17 @@ struct HostIOMMUDeviceClass { * @hiod: handle to the host IOMMU device */ uint64_t (*get_page_size_mask)(HostIOMMUDevice *hiod); + /** + * @get_pasid_info: Return the PASID information associated with the + * @hiod Host IOMMU device. + * + * @hiod: handle to the host IOMMU device + * + * @pasid_info: If success, returns the PASID related information. + * + * Returns: true on success, false on failure. + */ + bool (*get_pasid_info)(HostIOMMUDevice *hiod, PasidInfo *pasid_info); }; =20 /* --=20 2.43.0