[PATCH 1/2] arm64: psci: respect MIGRATE_INFO_TYPE
mark.rutland at arm.com
Mon Sep 8 07:50:48 PDT 2014
On Mon, Sep 08, 2014 at 03:25:47PM +0100, Ashwin Chaugule wrote:
> On 8 September 2014 10:14, Mark Rutland <mark.rutland at arm.com> wrote:
> > [...]
> >> >> Guessing there is no way for us to know which CPU the UP TOS is
> >> >> running on and only deny hotplug on that CPU?
> >> >
> >> > In the comment above I mention we can use MIGRATE_INFO_UP_CPU for that.
> >> > I started down that route, but the plumbing for it ended up looking a
> >> > little crazy so I thought it was better for the moment to have a simple
> >> > solution that we can backport to stable.
> >> Ah. I faintly recollect experiencing similar craziness when I was
> >> adding v0.2 support.
> > Yeah, it's lot of churny fun with many function prototypes changing
> > about. I wasn't too keen on rushing that, though I would like to get
> > around to it at some point.
> >> > No systems with a UP trusted OS (migrateable or not) have hit my radar
> >> > yet, and we're currently broken for them anyhow. So for the moment it
> >> > didn't seem worthwhile implementing support for those. We can add the
> >> > requisite MIGRATE_INFO_UP_CPU and MIGRATE calls in a later series.
> >> Ok.
> >> Acked-by: Ashwin Chaugule <ashwin.chaugule at linaro.org>
> > Thanks.
> > Does that apply to both patches or just the arm64 one?
> Sorry, just looked at it. Please consider the ACK for both.
Thanks for taking a look, it's much appreciated.
More information about the linux-arm-kernel