From: Christoph Hellwig <hch@lst.de>
To: Yongji Xie <xieyongji@bytedance.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
virtualization <virtualization@lists.linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v2 01/11] genirq/affinity:: Export irq_create_affinity_masks()
Date: Tue, 6 Dec 2022 09:47:36 +0100 [thread overview]
Message-ID: <20221206084736.GA9507@lst.de> (raw)
In-Reply-To: <CACycT3sXHGQt_V=rgwvEv4v8+oUaAOu1T=tWrKePdybMHagzng@mail.gmail.com>
On Tue, Dec 06, 2022 at 04:40:37PM +0800, Yongji Xie wrote:
> With the vDPA framework, some drivers (vduse, vdpa-sim) can create
> software-defined virtio devices and attach them to the virtio bus.
> This kind of virtio device is not a pci device or a platform device.
> So it would be needed to export this function if we want to implement
> the automatic affinity management for the virtio device driver which
> is binded to this device.
Why are these devices even using interrupts? The whjole vdpa thing
is a mess, I also still need to fix up the horrible abuse of the DMA
API for something that isn't even DMA, and this just seems to spread
that same mistake even further.
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WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Yongji Xie <xieyongji@bytedance.com>
Cc: Christoph Hellwig <hch@lst.de>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
virtualization <virtualization@lists.linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 01/11] genirq/affinity:: Export irq_create_affinity_masks()
Date: Tue, 6 Dec 2022 09:47:36 +0100 [thread overview]
Message-ID: <20221206084736.GA9507@lst.de> (raw)
In-Reply-To: <CACycT3sXHGQt_V=rgwvEv4v8+oUaAOu1T=tWrKePdybMHagzng@mail.gmail.com>
On Tue, Dec 06, 2022 at 04:40:37PM +0800, Yongji Xie wrote:
> With the vDPA framework, some drivers (vduse, vdpa-sim) can create
> software-defined virtio devices and attach them to the virtio bus.
> This kind of virtio device is not a pci device or a platform device.
> So it would be needed to export this function if we want to implement
> the automatic affinity management for the virtio device driver which
> is binded to this device.
Why are these devices even using interrupts? The whjole vdpa thing
is a mess, I also still need to fix up the horrible abuse of the DMA
API for something that isn't even DMA, and this just seems to spread
that same mistake even further.
next prev parent reply other threads:[~2022-12-06 8:47 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-05 8:41 [PATCH v2 00/11] VDUSE: Improve performance Xie Yongji
2022-12-05 8:41 ` [PATCH v2 01/11] genirq/affinity:: Export irq_create_affinity_masks() Xie Yongji
2022-12-06 8:18 ` Christoph Hellwig
2022-12-06 8:18 ` Christoph Hellwig
2022-12-06 8:40 ` Yongji Xie
2022-12-06 8:47 ` Christoph Hellwig [this message]
2022-12-06 8:47 ` Christoph Hellwig
2022-12-06 9:28 ` Yongji Xie
2022-12-07 5:56 ` Jason Wang
2022-12-07 5:56 ` Jason Wang
2022-12-19 7:33 ` Michael S. Tsirkin
2022-12-19 7:33 ` Michael S. Tsirkin
2022-12-19 9:36 ` Yongji Xie
2023-01-27 8:22 ` Michael S. Tsirkin
2023-01-27 8:22 ` Michael S. Tsirkin
2023-01-30 11:53 ` Yongji Xie
2023-02-13 11:59 ` Michael S. Tsirkin
2023-02-13 11:59 ` Michael S. Tsirkin
2023-02-13 14:50 ` Yongji Xie
2023-02-13 18:53 ` Thomas Gleixner
2023-02-13 18:53 ` Thomas Gleixner
2023-02-14 2:38 ` Yongji Xie
2022-12-05 8:41 ` [PATCH v2 02/11] vdpa: Add set/get_vq_affinity callbacks in vdpa_config_ops Xie Yongji
2022-12-16 3:52 ` Jason Wang
2022-12-16 3:52 ` Jason Wang
2022-12-05 8:41 ` [PATCH v2 03/11] vdpa: Add set_irq_affinity callback " Xie Yongji
2022-12-16 3:58 ` Jason Wang
2022-12-16 3:58 ` Jason Wang
2022-12-19 4:38 ` Yongji Xie
2022-12-19 6:06 ` Jason Wang
2022-12-19 6:06 ` Jason Wang
2022-12-19 7:12 ` Yongji Xie
2022-12-20 6:31 ` Jason Wang
2022-12-20 6:31 ` Jason Wang
2022-12-20 10:14 ` Yongji Xie
2022-12-21 3:20 ` Jason Wang
2022-12-21 3:20 ` Jason Wang
2022-12-05 8:41 ` [PATCH v2 04/11] vduse: Refactor allocation for vduse virtqueues Xie Yongji
2022-12-16 3:59 ` Jason Wang
2022-12-16 3:59 ` Jason Wang
2022-12-05 8:41 ` [PATCH v2 05/11] vduse: Introduce bound workqueue for irq injection Xie Yongji
2022-12-16 4:02 ` Jason Wang
2022-12-16 4:02 ` Jason Wang
2022-12-19 5:04 ` Yongji Xie
2022-12-20 6:27 ` Jason Wang
2022-12-20 6:27 ` Jason Wang
2022-12-20 10:01 ` Yongji Xie
2022-12-21 3:19 ` Jason Wang
2022-12-21 3:19 ` Jason Wang
2022-12-05 8:58 ` [PATCH v2 06/11] vduse: Support automatic irq callback affinity Xie Yongji
2022-12-16 5:30 ` Jason Wang
2022-12-16 5:30 ` Jason Wang
2022-12-19 4:56 ` Yongji Xie
2022-12-20 6:32 ` Jason Wang
2022-12-20 6:32 ` Jason Wang
2022-12-20 8:21 ` Yongji Xie
2022-12-05 9:02 ` [PATCH v2 07/11] vduse: Support set/get_vq_affinity callbacks Xie Yongji
2022-12-05 9:02 ` [PATCH v2 08/11] vduse: Add sysfs interface for irq callback affinity Xie Yongji
2022-12-16 5:35 ` Jason Wang
2022-12-16 5:35 ` Jason Wang
2022-12-19 5:16 ` Yongji Xie
2022-12-20 6:29 ` Jason Wang
2022-12-20 6:29 ` Jason Wang
2022-12-20 8:24 ` Yongji Xie
2022-12-05 9:02 ` [PATCH v2 09/11] vduse: Add enable_irq_wq sysfs interface for virtqueues Xie Yongji
2022-12-16 5:43 ` Jason Wang
2022-12-16 5:43 ` Jason Wang
2022-12-19 6:39 ` Yongji Xie
2022-12-05 9:02 ` [PATCH v2 10/11] vduse: Delay iova domain creation Xie Yongji
2022-12-16 5:49 ` Jason Wang
2022-12-16 5:49 ` Jason Wang
2022-12-05 9:02 ` [PATCH v2 11/11] vduse: Support specifying bounce buffer size via sysfs Xie Yongji
2022-12-16 6:02 ` Jason Wang
2022-12-16 6:02 ` Jason Wang
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