From nobody Wed Oct 1 22:33:19 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 61EE522D4FF; Sun, 28 Sep 2025 14:51:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759071094; cv=none; b=Zrz/Fvk+VGgiuYU3hhVO++H6QUadr9hKAcpSCsTiorM/nyzdLCbPfaFNFPcLziy/KdAbNUp9F1mIoL82ap3+BmLBjHoebadQSsgdxZ4jEKglk3sCIYmp77UJw4B1j50GcLSjaYDaJAqYASvUQgqj1hLPJYnB/IxiAQOL+SWQL70= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759071094; c=relaxed/simple; bh=i2Y3vHfToIEFk8anTKMUMMKTS0c/P1FR6mu/WmchJQI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MsIr8VZrx2ve/8PaVbJYppY3gdbAMxOe1T2BHShrFF9iR00+Dg+dajQKOpmKR8eeJ29d8bHhTdiVshz4zvkyQZWbO89NOMludLJ86ekyVFRRl30chDPFcW/TIdHiUY82afPnzJnjpyq2oj+shz5CIq56MFNv42jMWfCDww8lMRM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UBRwus1/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UBRwus1/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 891ADC4CEF5; Sun, 28 Sep 2025 14:51:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759071094; bh=i2Y3vHfToIEFk8anTKMUMMKTS0c/P1FR6mu/WmchJQI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UBRwus1/5hOpa4vk81wm9MxjKf8WAb0q0h9O54wziTSKlVqUj/C3OYZVG2SnRm8i3 QMj5RJDrypo6saaeQTrEKQDZ85SrFP1dONGmajlOskmu2aLJ3Nqlro0gq5rUwcHYmr jD+sJOvqWTiJ/k9/7ySAgVoKzDQL8bfTsckPJa4Ue4JshqoiuqiZKCBv+PkWtu3dPh rNkgNK8Z/J0h/HLqk5SRUEKLzk1PVjgE5dI/8c/cGqgzF3HxzXGYLDF5KIzIvpeTQD ubLhjVgqeo+fXJTdZ30f0d8Dg70rXL/8YrhUa0zRePoFNA+tdy1/t0gNUSBIWxS+3M QCyP5jWuTAyig== From: Leon Romanovsky To: Alex Williamson Cc: Vivek Kasireddy , Jason Gunthorpe , Andrew Morton , Bjorn Helgaas , =?UTF-8?q?Christian=20K=C3=B6nig?= , dri-devel@lists.freedesktop.org, iommu@lists.linux.dev, Jens Axboe , Joerg Roedel , kvm@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, Logan Gunthorpe , Marek Szyprowski , Robin Murphy , Sumit Semwal , Will Deacon Subject: [PATCH v4 09/10] vfio/pci: Share the core device pointer while invoking feature functions Date: Sun, 28 Sep 2025 17:50:19 +0300 Message-ID: <25c45db4338d9d51294cd0b6d1c4c2cc0e43966c.1759070796.git.leon@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Vivek Kasireddy 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 Signed-off-by: Leon Romanovsky --- 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_c= ore.c index 608af135308e..0c39368280d7 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -302,11 +302,9 @@ static int vfio_pci_runtime_pm_entry(struct vfio_pci_c= ore_device *vdev, return 0; } =20 -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 f= lags, void __user *arg, size_t argsz) { - struct vfio_pci_core_device *vdev =3D - container_of(device, struct vfio_pci_core_device, vdev); int ret; =20 ret =3D vfio_check_feature(flags, argsz, VFIO_DEVICE_FEATURE_SET, 0); @@ -323,12 +321,10 @@ static int vfio_pci_core_pm_entry(struct vfio_device = *device, u32 flags, } =20 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 =3D - container_of(device, struct vfio_pci_core_device, vdev); struct vfio_device_low_power_entry_with_wakeup entry; struct eventfd_ctx *efdctx; int ret; @@ -379,11 +375,9 @@ static void vfio_pci_runtime_pm_exit(struct vfio_pci_c= ore_device *vdev) up_write(&vdev->memory_lock); } =20 -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 fl= ags, void __user *arg, size_t argsz) { - struct vfio_pci_core_device *vdev =3D - container_of(device, struct vfio_pci_core_device, vdev); int ret; =20 ret =3D vfio_check_feature(flags, argsz, VFIO_DEVICE_FEATURE_SET, 0); @@ -1476,11 +1470,10 @@ long vfio_pci_core_ioctl(struct vfio_device *core_v= dev, unsigned int cmd, } EXPORT_SYMBOL_GPL(vfio_pci_core_ioctl); =20 -static int vfio_pci_core_feature_token(struct vfio_device *device, u32 fla= gs, - 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 =3D - container_of(device, struct vfio_pci_core_device, vdev); uuid_t uuid; int ret; =20 @@ -1507,16 +1500,19 @@ 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 =3D + 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; } --=20 2.51.0