From: Jason Gunthorpe <jgg@nvidia.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Ankit Agrawal <ankita@nvidia.com>,
Yishai Hadas <yishaih@nvidia.com>,
"shameerali.kolothum.thodi@huawei.com"
<shameerali.kolothum.thodi@huawei.com>,
"kevin.tian@intel.com" <kevin.tian@intel.com>,
Zhi Wang <zhiw@nvidia.com>, Aniket Agashe <aniketa@nvidia.com>,
Neo Jia <cjia@nvidia.com>, Kirti Wankhede <kwankhede@nvidia.com>,
"Tarun Gupta (SW-GPU)" <targupta@nvidia.com>,
Vikram Sethi <vsethi@nvidia.com>,
Andy Currid <acurrid@nvidia.com>,
Alistair Popple <apopple@nvidia.com>,
John Hubbard <jhubbard@nvidia.com>,
Dan Williams <danw@nvidia.com>,
"Anuj Aggarwal (SW-GPU)" <anuaggarwal@nvidia.com>,
Matt Ochs <mochs@nvidia.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 3/3] vfio/nvgrace-gpu: Check the HBM training and C2C link status
Date: Mon, 20 Jan 2025 09:12:22 -0400 [thread overview]
Message-ID: <20250120131222.GG5556@nvidia.com> (raw)
In-Reply-To: <20250119202252.4fcd2c49.alex.williamson@redhat.com>
On Sun, Jan 19, 2025 at 08:22:52PM -0700, Alex Williamson wrote:
> On second thought, I guess a vfio-pci variant driver can't
> automatically bind to a device, whether statically built or not, so
> maybe this isn't a concern. I'm not sure if there are other concerns
> with busy waiting for up to 30s at driver probe. Thanks,
It is not entirely abnormal. mlx5 has a timeout while it pushes
its first command and on the failure path it is long > 30s IIRC..
Drivers that take a couple of seconds to complete probe are not
unusual.
Jason
prev parent reply other threads:[~2025-01-20 13:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-17 23:37 [PATCH v4 0/3] vfio/nvgrace-gpu: Enable grace blackwell boards ankita
2025-01-17 23:37 ` [PATCH v4 1/3] vfio/nvgrace-gpu: Read dvsec register to determine need for uncached resmem ankita
2025-01-20 7:09 ` Tian, Kevin
2025-01-20 17:01 ` Ankit Agrawal
2025-01-21 1:20 ` Tian, Kevin
2025-01-17 23:37 ` [PATCH v4 2/3] vfio/nvgrace-gpu: Expose the blackwell device PF BAR1 to the VM ankita
2025-01-20 7:29 ` Tian, Kevin
2025-01-20 17:13 ` Ankit Agrawal
2025-01-17 23:37 ` [PATCH v4 3/3] vfio/nvgrace-gpu: Check the HBM training and C2C link status ankita
2025-01-18 1:52 ` Alex Williamson
2025-01-20 2:24 ` Ankit Agrawal
2025-01-20 3:12 ` Alex Williamson
2025-01-20 3:22 ` Alex Williamson
2025-01-20 3:35 ` Ankit Agrawal
2025-01-20 7:04 ` Tian, Kevin
2025-01-20 13:12 ` Jason Gunthorpe [this message]
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