Summary of LPC guest MSI discussion in Santa Fe

Will Deacon will.deacon at
Tue Nov 8 11:10:22 PST 2016

On Tue, Nov 08, 2016 at 02:02:39PM -0500, Don Dutile wrote:
> On 11/08/2016 12:54 PM, Will Deacon wrote:
> >A first step would be making all this opt-in, and only supporting GICv3
> >ITS for now.
> You're trying to support a config that is < GICv3 and no ITS ? ...
> That would be the equiv. of x86 pre-intr-remap, and that's why allow_unsafe_interrupts
> hook was created ... to enable devel/kick-the-tires.

Yup, that's exactly what I was envisaging. For systems that can't do
passthrough safely, we'll always have to throw a devel switch.


More information about the linux-arm-kernel mailing list