Re: [RFC][PATCH v2 00/13] iommu/arm-smmu-v3: Add NVIDIA implementation
From: Nicolin Chen <hidden>
Date: 2021-09-16 18:30:04
Also in:
kvm, linux-doc, linux-iommu, linux-tegra, lkml
Hi Kevin, On Thu, Sep 02, 2021 at 10:27:06PM +0000, Tian, Kevin wrote:
quoted
Indeed, this looks like a flavour of the accelerated invalidation stuff we've talked about already. I would see it probably exposed as some HW specific IOCTL on the iommu fd to get access to the accelerated invalidation for IOASID's in the FD. Indeed, this seems like a further example of why /dev/iommu is looking like a good idea as this RFC is very complicated to do something fairly simple. Where are thing on the /dev/iommu work these days?We are actively working on the basic skeleton. Our original plan is to send out the 1st draft before LPC, with support of vfio type1 semantics and and pci dev only (single-device group). But later we realized that adding multi-devices group support is also necessary even in the 1st draft to avoid some dirty hacks and build the complete picture. This will add some time though. If things go well, we'll still try hit the original plan. If not, it will be soon after LPC.
As I also want to take a look at your work for this implementation, would you please CC me when you send out your patches? Thank you! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel