From: Jason Gunthorpe <jgg@nvidia.com>
To: Nicolin Chen <nicolinc@nvidia.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3] iommufd/device: Enforce reserved IOVA also when attached to hwpt_nested
Date: Thu, 15 Aug 2024 14:37:28 -0300 [thread overview]
Message-ID: <20240815173728.GL2032816@nvidia.com> (raw)
In-Reply-To: <Zr0+RSaQk8e/8pl1@Asurada-Nvidia>
On Wed, Aug 14, 2024 at 04:31:17PM -0700, Nicolin Chen wrote:
> > Regardless this seems like a bug fix to me that we may as well
> > take. Unless we intend to retire the entire RESV_SW mechanism it
> > should work correctly.
>
> I am hoping for that, yet can't guarantee of accomplishing it at
> the end of the day.
I think we can't retire it completely. It is necessary to allow DPDK
to work as-is, for instance.
We can only hope to provide an alternative for nesting..
Jason
next prev parent reply other threads:[~2024-08-15 17:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-07 0:34 [PATCH v3] iommufd/device: Enforce reserved IOVA also when attached to hwpt_nested Nicolin Chen
2024-08-09 2:00 ` Tian, Kevin
2024-08-09 20:23 ` Nicolin Chen
2024-08-14 22:38 ` Jason Gunthorpe
2024-08-14 23:31 ` Nicolin Chen
2024-08-15 17:37 ` Jason Gunthorpe [this message]
2024-08-27 14:26 ` Jason Gunthorpe
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