From: Nicolin Chen <nicolinc@nvidia.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: <kwankhede@nvidia.com>, <corbet@lwn.net>, <hca@linux.ibm.com>,
<gor@linux.ibm.com>, <agordeev@linux.ibm.com>,
<borntraeger@linux.ibm.com>, <svens@linux.ibm.com>,
<zhenyuw@linux.intel.com>, <zhi.a.wang@intel.com>,
<jani.nikula@linux.intel.com>, <joonas.lahtinen@linux.intel.com>,
<rodrigo.vivi@intel.com>, <tvrtko.ursulin@linux.intel.com>,
<airlied@linux.ie>, <daniel@ffwll.ch>, <farman@linux.ibm.com>,
<mjrosato@linux.ibm.com>, <pasic@linux.ibm.com>,
<vneethv@linux.ibm.com>, <oberpar@linux.ibm.com>,
<freude@linux.ibm.com>, <akrowiak@linux.ibm.com>,
<jjherne@linux.ibm.com>, <alex.williamson@redhat.com>,
<cohuck@redhat.com>, <jgg@nvidia.com>, <kevin.tian@intel.com>,
<jchrist@linux.ibm.com>, <kvm@vger.kernel.org>,
<linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-s390@vger.kernel.org>,
<intel-gvt-dev@lists.freedesktop.org>,
<intel-gfx@lists.freedesktop.org>,
<dri-devel@lists.freedesktop.org>
Subject: Re: [RFT][PATCH v1 3/6] vfio: Pass in starting IOVA to vfio_pin/unpin_pages API
Date: Tue, 21 Jun 2022 18:18:27 -0700 [thread overview]
Message-ID: <YrJt43HQnoKSIIM3@Asurada-Nvidia> (raw)
In-Reply-To: <Yqw+goqTJwb0lrxy@infradead.org>
On Fri, Jun 17, 2022 at 01:42:42AM -0700, Christoph Hellwig wrote:
> On Thu, Jun 16, 2022 at 04:52:09PM -0700, Nicolin Chen wrote:
> > + ret = vfio_unpin_pages(&vgpu->vfio_device, gfn << PAGE_SHIFT, npage);
> > + drm_WARN_ON(&i915->drm, ret != npage);
>
> The shifting of gfn seems to happen bother here and in the callers.
Sorry. I overlooked this line. I can add another preparatory patches
for callers to pass in an IOVA other than "pfn << PAGE_SHIFT", if you
think it's necessary: although GVT still does things in PFN, both ap
and ccw prepare their PFN lists from IOVAs, which now can be omitted.
WARNING: multiple messages have this Message-ID (diff)
From: Nicolin Chen <nicolinc@nvidia.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: mjrosato@linux.ibm.com, linux-doc@vger.kernel.org,
airlied@linux.ie, kevin.tian@intel.com,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
kwankhede@nvidia.com, vneethv@linux.ibm.com,
agordeev@linux.ibm.com, linux-s390@vger.kernel.org,
kvm@vger.kernel.org, corbet@lwn.net, pasic@linux.ibm.com,
jgg@nvidia.com, borntraeger@linux.ibm.com,
intel-gfx@lists.freedesktop.org, zhi.a.wang@intel.com,
jjherne@linux.ibm.com, farman@linux.ibm.com,
jchrist@linux.ibm.com, gor@linux.ibm.com, hca@linux.ibm.com,
alex.williamson@redhat.com, freude@linux.ibm.com,
rodrigo.vivi@intel.com, intel-gvt-dev@lists.freedesktop.org,
akrowiak@linux.ibm.com, tvrtko.ursulin@linux.intel.com,
cohuck@redhat.com, oberpar@linux.ibm.com, svens@linux.ibm.com
Subject: Re: [RFT][PATCH v1 3/6] vfio: Pass in starting IOVA to vfio_pin/unpin_pages API
Date: Tue, 21 Jun 2022 18:18:27 -0700 [thread overview]
Message-ID: <YrJt43HQnoKSIIM3@Asurada-Nvidia> (raw)
In-Reply-To: <Yqw+goqTJwb0lrxy@infradead.org>
On Fri, Jun 17, 2022 at 01:42:42AM -0700, Christoph Hellwig wrote:
> On Thu, Jun 16, 2022 at 04:52:09PM -0700, Nicolin Chen wrote:
> > + ret = vfio_unpin_pages(&vgpu->vfio_device, gfn << PAGE_SHIFT, npage);
> > + drm_WARN_ON(&i915->drm, ret != npage);
>
> The shifting of gfn seems to happen bother here and in the callers.
Sorry. I overlooked this line. I can add another preparatory patches
for callers to pass in an IOVA other than "pfn << PAGE_SHIFT", if you
think it's necessary: although GVT still does things in PFN, both ap
and ccw prepare their PFN lists from IOVAs, which now can be omitted.
WARNING: multiple messages have this Message-ID (diff)
From: Nicolin Chen <nicolinc@nvidia.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: mjrosato@linux.ibm.com, linux-doc@vger.kernel.org,
airlied@linux.ie, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, kwankhede@nvidia.com,
vneethv@linux.ibm.com, agordeev@linux.ibm.com,
linux-s390@vger.kernel.org, kvm@vger.kernel.org, corbet@lwn.net,
pasic@linux.ibm.com, jgg@nvidia.com, borntraeger@linux.ibm.com,
intel-gfx@lists.freedesktop.org, jjherne@linux.ibm.com,
farman@linux.ibm.com, jchrist@linux.ibm.com, gor@linux.ibm.com,
hca@linux.ibm.com, freude@linux.ibm.com, rodrigo.vivi@intel.com,
intel-gvt-dev@lists.freedesktop.org, akrowiak@linux.ibm.com,
cohuck@redhat.com, oberpar@linux.ibm.com, svens@linux.ibm.com
Subject: Re: [Intel-gfx] [RFT][PATCH v1 3/6] vfio: Pass in starting IOVA to vfio_pin/unpin_pages API
Date: Tue, 21 Jun 2022 18:18:27 -0700 [thread overview]
Message-ID: <YrJt43HQnoKSIIM3@Asurada-Nvidia> (raw)
In-Reply-To: <Yqw+goqTJwb0lrxy@infradead.org>
On Fri, Jun 17, 2022 at 01:42:42AM -0700, Christoph Hellwig wrote:
> On Thu, Jun 16, 2022 at 04:52:09PM -0700, Nicolin Chen wrote:
> > + ret = vfio_unpin_pages(&vgpu->vfio_device, gfn << PAGE_SHIFT, npage);
> > + drm_WARN_ON(&i915->drm, ret != npage);
>
> The shifting of gfn seems to happen bother here and in the callers.
Sorry. I overlooked this line. I can add another preparatory patches
for callers to pass in an IOVA other than "pfn << PAGE_SHIFT", if you
think it's necessary: although GVT still does things in PFN, both ap
and ccw prepare their PFN lists from IOVAs, which now can be omitted.
next prev parent reply other threads:[~2022-06-22 1:18 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-16 23:52 [RFT][PATCH v1 0/6] Update vfio_pin/unpin_pages API Nicolin Chen
2022-06-16 23:52 ` Nicolin Chen
2022-06-16 23:52 ` [RFT][PATCH v1 1/6] vfio/ap: Pass in physical address of ind to ap_aqic() Nicolin Chen
2022-06-16 23:52 ` Nicolin Chen
2022-06-20 10:00 ` Harald Freudenberger
2022-06-20 10:00 ` Harald Freudenberger
2022-06-21 21:01 ` Nicolin Chen
2022-06-21 21:01 ` [Intel-gfx] " Nicolin Chen
2022-06-21 21:01 ` Nicolin Chen
2022-06-16 23:52 ` [RFT][PATCH v1 2/6] vfio/ccw: Only pass in contiguous pages Nicolin Chen
2022-06-16 23:52 ` Nicolin Chen
2022-06-16 23:52 ` [RFT][PATCH v1 3/6] vfio: Pass in starting IOVA to vfio_pin/unpin_pages API Nicolin Chen
2022-06-16 23:52 ` Nicolin Chen
2022-06-17 8:42 ` Christoph Hellwig
2022-06-17 8:42 ` [Intel-gfx] " Christoph Hellwig
2022-06-17 21:57 ` Nicolin Chen
2022-06-17 21:57 ` Nicolin Chen
2022-06-22 1:18 ` Nicolin Chen [this message]
2022-06-22 1:18 ` [Intel-gfx] " Nicolin Chen
2022-06-22 1:18 ` Nicolin Chen
2022-06-16 23:52 ` [RFT][PATCH v1 4/6] vfio: Rename user_iova of vfio_dma_rw() Nicolin Chen
2022-06-16 23:52 ` Nicolin Chen
2022-06-16 23:52 ` [RFT][PATCH v1 5/6] vfio/ccw: Add kmap_local_page() for memcpy Nicolin Chen
2022-06-16 23:52 ` Nicolin Chen
2022-06-17 8:44 ` Christoph Hellwig
2022-06-17 8:44 ` [Intel-gfx] " Christoph Hellwig
2022-06-17 21:58 ` Nicolin Chen
2022-06-17 21:58 ` Nicolin Chen
2022-06-20 2:57 ` Jason Gunthorpe
2022-06-20 2:57 ` [Intel-gfx] " Jason Gunthorpe
2022-06-20 2:57 ` Jason Gunthorpe
2022-06-20 6:32 ` Christoph Hellwig
2022-06-20 6:32 ` [Intel-gfx] " Christoph Hellwig
2022-06-20 15:39 ` Jason Gunthorpe
2022-06-20 15:39 ` [Intel-gfx] " Jason Gunthorpe
2022-06-20 15:39 ` Jason Gunthorpe
2022-06-21 21:21 ` Nicolin Chen
2022-06-21 21:21 ` [Intel-gfx] " Nicolin Chen
2022-06-21 21:21 ` Nicolin Chen
2022-06-24 13:56 ` Jason Gunthorpe
2022-06-24 13:56 ` [Intel-gfx] " Jason Gunthorpe
2022-06-24 13:56 ` Jason Gunthorpe
2022-06-24 19:22 ` Nicolin Chen
2022-06-24 19:22 ` Nicolin Chen
2022-06-24 19:30 ` Jason Gunthorpe
2022-06-24 19:30 ` [Intel-gfx] " Jason Gunthorpe
2022-06-24 19:30 ` Jason Gunthorpe
2022-06-24 20:12 ` Nicolin Chen
2022-06-24 20:12 ` Nicolin Chen
2022-06-24 22:42 ` Jason Gunthorpe
2022-06-24 22:42 ` [Intel-gfx] " Jason Gunthorpe
2022-06-24 22:42 ` Jason Gunthorpe
2022-06-16 23:52 ` [RFT][PATCH v1 6/6] vfio: Replace phys_pfn with phys_page for vfio_pin_pages() Nicolin Chen
2022-06-16 23:52 ` Nicolin Chen
2022-06-17 8:54 ` Christoph Hellwig
2022-06-17 8:54 ` [Intel-gfx] " Christoph Hellwig
2022-06-17 22:06 ` Nicolin Chen
2022-06-17 22:06 ` Nicolin Chen
2022-06-19 6:18 ` Christoph Hellwig
2022-06-19 6:18 ` [Intel-gfx] " Christoph Hellwig
2022-06-19 6:41 ` Nicolin Chen
2022-06-19 6:41 ` Nicolin Chen
2022-06-20 3:00 ` Jason Gunthorpe
2022-06-20 3:00 ` [Intel-gfx] " Jason Gunthorpe
2022-06-20 3:00 ` Jason Gunthorpe
2022-06-20 5:51 ` Christoph Hellwig
2022-06-20 5:51 ` [Intel-gfx] " Christoph Hellwig
2022-06-20 6:37 ` Christoph Hellwig
2022-06-20 6:37 ` [Intel-gfx] " Christoph Hellwig
2022-06-20 15:36 ` Jason Gunthorpe
2022-06-20 15:36 ` [Intel-gfx] " Jason Gunthorpe
2022-06-20 15:36 ` Jason Gunthorpe
2022-06-21 21:47 ` Nicolin Chen
2022-06-21 21:47 ` [Intel-gfx] " Nicolin Chen
2022-06-21 21:47 ` Nicolin Chen
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