From: geoff@infradead.org (Geoff Levand)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 08/13] arm64: Use cpu_ops for smp_stop
Date: Wed, 24 Sep 2014 17:24:42 -0700 [thread overview]
Message-ID: <1411604682.6001.178.camel@smoke> (raw)
In-Reply-To: <20140915190616.GC14191@leverpostej>
Hi Mark,
On Mon, 2014-09-15 at 20:06 +0100, Mark Rutland wrote:
> Hi Geoff,
>
> On Tue, Sep 09, 2014 at 11:49:05PM +0100, Geoff Levand wrote:
> > The current implementation of ipi_cpu_stop() is just a tight infinite loop
> > around cpu_relax(). This infinite loop implementation is OK if the machine
> > will soon do a poweroff, but it doesn't have any mechanism to allow a CPU
> > to be brought back on-line, nor is it compatible with kexec re-boot.
>
> I don't see why we should use this when we have disable_nonboot_cpus.
I decided to use disable_nonboot_cpus, so this patch is no longer
needed. I'll put the rework of disable_nonboot_cpus to not depend on
CONFIG_PM_SLEEP_SMP on my todo list.
-Geoff
next prev parent reply other threads:[~2014-09-25 0:24 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-09 22:51 [PATCH 00/13] arm64 kexec kernel patches V2 Geoff Levand
2014-09-09 22:49 ` [PATCH 07/13] arm64: Add new routine local_disable Geoff Levand
2014-09-15 18:56 ` Mark Rutland
2014-09-25 0:24 ` Geoff Levand
2014-09-09 22:49 ` [PATCH 06/13] arm64: Add new routine read_cpu_properties Geoff Levand
2014-09-15 18:42 ` Mark Rutland
2014-09-25 0:23 ` Geoff Levand
2014-09-09 22:49 ` [PATCH 01/13] arm64: Add ESR_EL2_EC macros to hyp-stub Geoff Levand
2014-09-15 16:10 ` Mark Rutland
2014-09-22 21:45 ` Geoff Levand
2014-09-09 22:49 ` [PATCH 05/13] arm64: Add EL2 switch to soft_restart Geoff Levand
2014-09-09 22:49 ` [PATCH 03/13] arm64: Convert hcalls to use ISS field Geoff Levand
2014-09-11 16:14 ` Arun Chandran
2014-09-15 17:57 ` Mark Rutland
2014-09-22 21:46 ` Geoff Levand
2014-09-09 22:49 ` [PATCH 04/13] arm64: Add new hcall HVC_CALL_FUNC Geoff Levand
2014-09-10 17:07 ` Will Deacon
2014-09-10 17:23 ` Geoff Levand
2014-09-10 17:35 ` Will Deacon
2014-09-10 18:11 ` [PATCH V2 " Geoff Levand
2014-09-15 18:11 ` [PATCH " Mark Rutland
2014-09-25 0:24 ` Geoff Levand
2014-09-09 22:49 ` [PATCH 02/13] arm64/kvm: Fix assembler compatibility of macros Geoff Levand
2014-09-10 8:40 ` Ard Biesheuvel
2014-09-10 16:35 ` Geoff Levand
2014-09-10 17:09 ` Ard Biesheuvel
2014-09-15 16:14 ` Mark Rutland
2014-09-10 18:04 ` [PATCH V2 " Geoff Levand
2014-09-09 22:49 ` [PATCH 09/13] arm64/kexec: Kexec expects cpu_die Geoff Levand
2014-09-15 19:10 ` Mark Rutland
2014-09-09 22:49 ` [PATCH 10/13] arm64/kexec: Revert change to machine_shutdown() Geoff Levand
2014-09-15 19:20 ` Mark Rutland
2014-09-09 22:49 ` [PATCH 11/13] arm64/kexec: Add core kexec support Geoff Levand
2014-09-18 1:13 ` Mark Rutland
2014-09-25 0:25 ` Geoff Levand
2014-09-09 22:49 ` [PATCH 08/13] arm64: Use cpu_ops for smp_stop Geoff Levand
2014-09-15 19:06 ` Mark Rutland
2014-09-25 0:24 ` Geoff Levand [this message]
2014-09-09 22:49 ` [PATCH 13/13] arm64/kexec: Add kexec_ignore_compat_check param Geoff Levand
2014-09-09 22:49 ` [PATCH 12/13] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand
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