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Re: [Qemu-devel] [RFC 0/6] vSMMU initialization
From: |
Will Deacon |
Subject: |
Re: [Qemu-devel] [RFC 0/6] vSMMU initialization |
Date: |
Fri, 12 Jun 2015 15:23:29 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Fri, Jun 12, 2015 at 03:20:04PM +0100, Baptiste Reynal wrote:
> The ARM SMMU has support for 2-stages address translations, allowing a virtual
> address to be translated at two levels:
> - Stage 1 translates a virtual address (VA) into an intermediate physical
> address (IPA)
> - Stage 2 translates an IPA into a physical address (PA)
>
> Will Deacon introduced a virtual SMMU interface for KVM, which gives a virtual
> machine the possibility to use an IOMMU with native drivers. While the VM will
> program the first stage of translation (stage 1), the interface will program
> the second (stage 2) on the physical SMMU.
Please note that I have no plans to merge the kernel-side of this at the
moment. It was merely an exploratory tool to see what a non-PV vSMMU
implementation might look like and certainly not intended to be used in
anger.
Will
- [Qemu-devel] [RFC 0/6] vSMMU initialization, Baptiste Reynal, 2015/06/12
- [Qemu-devel] [RFC 1/6] headers sync, Baptiste Reynal, 2015/06/12
- [Qemu-devel] [RFC 2/6] hw/core/platform-bus: initialization notifier, Baptiste Reynal, 2015/06/12
- [Qemu-devel] [RFC 3/6] hw/core/platform-bus: add base_address field, Baptiste Reynal, 2015/06/12
- [Qemu-devel] [RFC 4/6] hw/vfio: vsmmu device, Baptiste Reynal, 2015/06/12
- [Qemu-devel] [RFC 5/6] hw/arm/sysbus-fdt: enable vsmmu dynamic instantiation, Baptiste Reynal, 2015/06/12
- [Qemu-devel] [RFC 6/6] hw/arm/sysbus-fdt: add smmu masters in device tree, Baptiste Reynal, 2015/06/12
- Re: [Qemu-devel] [RFC 0/6] vSMMU initialization,
Will Deacon <=