From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Mon, 8 Sep 2014 15:14:34 +0100 Subject: [PATCH 1/2] arm64: psci: respect MIGRATE_INFO_TYPE In-Reply-To: References: <1409915540-20044-1-git-send-email-mark.rutland@arm.com> <1409915540-20044-2-git-send-email-mark.rutland@arm.com> <20140905141345.GF20164@leverpostej> Message-ID: <20140908141434.GJ12081@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org [...] > >> 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 Thanks. Does that apply to both patches or just the arm64 one? Mark.