On Mon, Jan 26, 2015 at 05:44:14PM +0000, Catalin Marinas wrote: > Hi Geoff, > > On Sat, Jan 17, 2015 at 12:23:34AM +0000, Geoff Levand wrote: > > This series adds the core support for kexec re-boots on arm64. This v7 of the > > series is mainly just a rebase to the latest arm64 for-next/core branch > > (v3.19-rc4), and a few very minor changes requested for v6. > > I haven't looked at the series in detail before, so some of my comments > may have already been discussed. > > > Several things are known to have problems on kexec re-boot: > > > > spin-table > > I think that's not too bad, for complete kexec support (SMP->SMP) we can > require some CPU unplug mechanism and PSCI is one of them. > > > FIX: Upgrade system firmware to provide PSCI enable method support or add > > missing spin-table support to the kernel. > > What's the missing spin-table support? As you mention above, a mechanism for returning the CPUs to FW. There is no spec for doing this with spin-table, which would have to be written and vetted. Mark.
