From patchwork Mon Jun 24 06:53:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kasireddy, Vivek" X-Patchwork-Id: 13709087 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC4B22EB1D; Mon, 24 Jun 2024 07:21:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719213682; cv=none; b=SPc78TGzmwTnaDZJkAwIuhfNRcn5ZxlGnzviZiwq43Mfi55zwWfnG1Qr4zbAyzx5OxrOvAkXvbhQzkRQHq5jGEThvihgfxgqXCpRHtAON36teIjpbBMlAwbs1mS0T39L8phnFrLm+EqOGZc2OW31bYQJmNaxuECV3XC3OXjNUoo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719213682; c=relaxed/simple; bh=pRXDsgl04gfIgzvZ8Y7I8GrYRf9JTs110rARhT1Wko8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uwqGas3r6tCPgKQ/rfGjSm26NvVFlWfEAWne0g+QteZIJRBTW/unFcViusgVofLC9BViVzXp0LGA8CscTMKW4CWOJxwJrQlQzyaLEWhIr9VsilQTM23kvu/B6JFyNIPvblr9HIsQBRI8T4l+n+YPcBt37vSfRVfN7KiSasqDkhU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=NSmlP+as; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="NSmlP+as" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1719213681; x=1750749681; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=pRXDsgl04gfIgzvZ8Y7I8GrYRf9JTs110rARhT1Wko8=; b=NSmlP+as1rOE/bejIrnRAylU32LQImC4LfLQ6oa5BxTbOAis23e2CWvb Td3Lm0C8+7BCWCn7XnSnbplA+MUtnxBHYYdeL4uHNy091TjrFY75Rd+wA GTtIFqW9TQWwMCK4cGA3NrqyZBLYDe64j+XPT5ZfsDK8WSfBUJt7hgLuQ DUKCeIowxV/EbOC9lcf9lnsPsXt3I6h853psJ0K44aWVwpH0thADG0Ila TFsivY4iA27m9RbLYx0gIQBcKLyaHwcicF5XNUfyJY9Zx8ueh1r1LRlI2 YqIMtmwO9zHX/6apQE2RNEt2zNF3DQOCnBIisSDKcCgu+azbfKAjCJmOf A==; X-CSE-ConnectionGUID: EUDzkcYEQJWYJbqGD34Fjw== X-CSE-MsgGUID: 2W5bEW8TRaqhye7znB5YhQ== X-IronPort-AV: E=McAfee;i="6700,10204,11112"; a="41574854" X-IronPort-AV: E=Sophos;i="6.08,261,1712646000"; d="scan'208";a="41574854" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jun 2024 00:21:17 -0700 X-CSE-ConnectionGUID: iJZc5fzHQrWO5IQR6xIEag== X-CSE-MsgGUID: 6O+ZIQVhS4G9errrfF+UKg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,261,1712646000"; d="scan'208";a="43085344" Received: from vkasired-desk2.fm.intel.com ([10.105.128.132]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jun 2024 00:21:17 -0700 From: Vivek Kasireddy To: dri-devel@lists.freedesktop.org, kvm@vger.kernel.org, linux-rdma@vger.kernel.org Cc: Vivek Kasireddy Subject: [PATCH v2 2/3] vfio/pci: Share the core device pointer while invoking feature functions Date: Sun, 23 Jun 2024 23:53:10 -0700 Message-ID: <20240624065552.1572580-3-vivek.kasireddy@intel.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240624065552.1572580-1-vivek.kasireddy@intel.com> References: <20240624065552.1572580-1-vivek.kasireddy@intel.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There is no need to share the main device pointer (struct vfio_device *) with all the feature functions as they only need the core device pointer. Therefore, extract the core device pointer once in the caller (vfio_pci_core_ioctl_feature) and share it instead. Signed-off-by: Vivek Kasireddy --- drivers/vfio/pci/vfio_pci_core.c | 30 +++++++++++++----------------- 1 file changed, 13 insertions(+), 17 deletions(-) diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index 987c7921affa..3282ef2dddea 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -304,11 +304,9 @@ static int vfio_pci_runtime_pm_entry(struct vfio_pci_core_device *vdev, return 0; } -static int vfio_pci_core_pm_entry(struct vfio_device *device, u32 flags, +static int vfio_pci_core_pm_entry(struct vfio_pci_core_device *vdev, u32 flags, void __user *arg, size_t argsz) { - struct vfio_pci_core_device *vdev = - container_of(device, struct vfio_pci_core_device, vdev); int ret; ret = vfio_check_feature(flags, argsz, VFIO_DEVICE_FEATURE_SET, 0); @@ -325,12 +323,10 @@ static int vfio_pci_core_pm_entry(struct vfio_device *device, u32 flags, } static int vfio_pci_core_pm_entry_with_wakeup( - struct vfio_device *device, u32 flags, + struct vfio_pci_core_device *vdev, u32 flags, struct vfio_device_low_power_entry_with_wakeup __user *arg, size_t argsz) { - struct vfio_pci_core_device *vdev = - container_of(device, struct vfio_pci_core_device, vdev); struct vfio_device_low_power_entry_with_wakeup entry; struct eventfd_ctx *efdctx; int ret; @@ -381,11 +377,9 @@ static void vfio_pci_runtime_pm_exit(struct vfio_pci_core_device *vdev) up_write(&vdev->memory_lock); } -static int vfio_pci_core_pm_exit(struct vfio_device *device, u32 flags, +static int vfio_pci_core_pm_exit(struct vfio_pci_core_device *vdev, u32 flags, void __user *arg, size_t argsz) { - struct vfio_pci_core_device *vdev = - container_of(device, struct vfio_pci_core_device, vdev); int ret; ret = vfio_check_feature(flags, argsz, VFIO_DEVICE_FEATURE_SET, 0); @@ -1490,11 +1484,10 @@ long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd, } EXPORT_SYMBOL_GPL(vfio_pci_core_ioctl); -static int vfio_pci_core_feature_token(struct vfio_device *device, u32 flags, - uuid_t __user *arg, size_t argsz) +static int vfio_pci_core_feature_token(struct vfio_pci_core_device *vdev, + u32 flags, uuid_t __user *arg, + size_t argsz) { - struct vfio_pci_core_device *vdev = - container_of(device, struct vfio_pci_core_device, vdev); uuid_t uuid; int ret; @@ -1521,16 +1514,19 @@ static int vfio_pci_core_feature_token(struct vfio_device *device, u32 flags, int vfio_pci_core_ioctl_feature(struct vfio_device *device, u32 flags, void __user *arg, size_t argsz) { + struct vfio_pci_core_device *vdev = + container_of(device, struct vfio_pci_core_device, vdev); + switch (flags & VFIO_DEVICE_FEATURE_MASK) { case VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY: - return vfio_pci_core_pm_entry(device, flags, arg, argsz); + return vfio_pci_core_pm_entry(vdev, flags, arg, argsz); case VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY_WITH_WAKEUP: - return vfio_pci_core_pm_entry_with_wakeup(device, flags, + return vfio_pci_core_pm_entry_with_wakeup(vdev, flags, arg, argsz); case VFIO_DEVICE_FEATURE_LOW_POWER_EXIT: - return vfio_pci_core_pm_exit(device, flags, arg, argsz); + return vfio_pci_core_pm_exit(vdev, flags, arg, argsz); case VFIO_DEVICE_FEATURE_PCI_VF_TOKEN: - return vfio_pci_core_feature_token(device, flags, arg, argsz); + return vfio_pci_core_feature_token(vdev, flags, arg, argsz); default: return -ENOTTY; }