[PATCH v2] arm64: smccc: Add support for SMCCCv1.2 extended input/output registers

[Will Deacon]

On Wed, May 26, 2021 at 11:34:36AM +0100, Sudeep Holla wrote:
> On Tue, May 25, 2021 at 07:58:50PM +0100, Will Deacon wrote:
> > On Tue, 18 May 2021 17:36:18 +0100, Sudeep Holla wrote:
> > > SMCCC v1.2 allows x8-x17 to be used as parameter registers and x4—x17
> > > to be used as result registers in SMC64/HVC64. Arm Firmware Framework
> > > for Armv8-A specification makes use of x0-x7 as parameter and result
> > > registers. There are other users like Hyper-V who intend to use beyond
> > > x0-x7 as well.
> > >
> > > Current SMCCC interface in the kernel just use x0-x7 as parameter and
> > > x0-x3 as result registers as required by SMCCCv1.0. Let us add new
> > > interface to support this extended set of input/output registers namely
> > > x0-x17 as both parameter and result registers.
> >
> > Applied to arm64 (for-next/smccc), thanks!
> >
> > [1/1] arm64: smccc: Add support for SMCCCv1.2 extended input/output registers
> >       https://git.kernel.org/arm64/c/8ebe486de71a
> >
> 
> I see this is based on v5.13-rc3. As I mentioned earlier, I need to base
> FF-A driver on this and arm-soc team always expects to send pull request
> based on -rc1. Is it possible to have this based on -rc1 instead so that
> I can base FF-A driver based on that ?

Sorry, I forgot about that requirement. I've pushed a new branch
(for-next/ffa) for you to use instead.

Will