From: James Morse <james.morse@arm.com>
To: Geoff Levand <geoff@infradead.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
marc.zyngier@arm.com, Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
AKASHI Takahiro <takahiro.akashi@linaro.org>,
kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v20 01/14] arm64: hibernate: Don't hibernate on systems with stuck CPUs
Date: Mon, 27 Jun 2016 12:04:35 +0100 [thread overview]
Message-ID: <57710843.40806@arm.com> (raw)
In-Reply-To: <97dcd35763eddf1b4c50a26d16389f313269f0c8.1466702804.git.geoff@infradead.org>
Hi
On 23/06/16 18:54, Geoff Levand wrote:
> From: James Morse <james.morse@arm.com>
>
> Hibernate relies on cpu hotplug to prevent secondary cores executing
> the kernel text while it is being restored.
>
> Add a call to cpus_are_stuck_in_kernel() to determine if there are
> CPUs not counted by 'num_online_cpus()', and prevent hibernate in this
> case.
>
> Fixes: 82869ac57b5 ("arm64: kernel: Add support for hibernate/suspend-to-disk")
> Signed-off-by: James Morse <james.morse@arm.com>
> ---
> arch/arm64/kernel/hibernate.c | 6 ++++++
> 1 file changed, 6 insertions(+)
... this patch isn't necessary for kexec, it wired up the helper function you
have in patch 2 for hibernate.
Please drop this in any future posting!
Thanks,
James
_______________________________________________
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kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec
WARNING: multiple messages have this Message-ID (diff)
From: james.morse@arm.com (James Morse)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v20 01/14] arm64: hibernate: Don't hibernate on systems with stuck CPUs
Date: Mon, 27 Jun 2016 12:04:35 +0100 [thread overview]
Message-ID: <57710843.40806@arm.com> (raw)
In-Reply-To: <97dcd35763eddf1b4c50a26d16389f313269f0c8.1466702804.git.geoff@infradead.org>
Hi
On 23/06/16 18:54, Geoff Levand wrote:
> From: James Morse <james.morse@arm.com>
>
> Hibernate relies on cpu hotplug to prevent secondary cores executing
> the kernel text while it is being restored.
>
> Add a call to cpus_are_stuck_in_kernel() to determine if there are
> CPUs not counted by 'num_online_cpus()', and prevent hibernate in this
> case.
>
> Fixes: 82869ac57b5 ("arm64: kernel: Add support for hibernate/suspend-to-disk")
> Signed-off-by: James Morse <james.morse@arm.com>
> ---
> arch/arm64/kernel/hibernate.c | 6 ++++++
> 1 file changed, 6 insertions(+)
... this patch isn't necessary for kexec, it wired up the helper function you
have in patch 2 for hibernate.
Please drop this in any future posting!
Thanks,
James
next prev parent reply other threads:[~2016-06-27 11:04 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-23 17:54 [PATCH v20 00/14] arm64 kexec kernel patches Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 10/14] arm64: kdump: add kdump support Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 12/14] arm64: kdump: enable kdump in the arm64 defconfig Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 03/14] arm64: Add back cpu reset routines Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 06/14] arm64/kexec: Add pr_debug output Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 05/14] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 02/14] arm64: smp: Add function to determine if cpus are stuck in the kernel Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 04/14] arm64/kexec: Add core kexec support Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-27 11:18 ` James Morse
2016-06-27 11:18 ` James Morse
2016-06-27 14:39 ` Catalin Marinas
2016-06-27 14:39 ` Catalin Marinas
2016-06-27 16:29 ` James Morse
2016-06-27 16:29 ` James Morse
2016-06-27 17:00 ` Geoff Levand
2016-06-27 17:00 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 09/14] arm64: kdump: implement machine_crash_shutdown() Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 08/14] arm64: limit memory regions based on DT property, usable-memory Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 01/14] arm64: hibernate: Don't hibernate on systems with stuck CPUs Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-27 11:04 ` James Morse [this message]
2016-06-27 11:04 ` James Morse
2016-06-27 16:44 ` Geoff Levand
2016-06-27 16:44 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 11/14] arm64: kdump: add VMCOREINFO's for user-space coredump tools Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 07/14] arm64: kdump: reserve memory for crash dump kernel Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-23 17:54 ` [PATCH v20 13/14] arm64: kdump: update a kernel doc Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-30 9:00 ` Baoquan He
2016-06-30 9:00 ` Baoquan He
2016-07-01 7:37 ` AKASHI Takahiro
2016-07-01 7:37 ` AKASHI Takahiro
2016-07-01 7:45 ` Baoquan He
2016-07-01 7:45 ` Baoquan He
2016-07-04 3:04 ` AKASHI Takahiro
2016-07-04 3:04 ` AKASHI Takahiro
2016-06-30 13:00 ` Dave Young
2016-06-30 13:00 ` Dave Young
2016-06-23 17:54 ` [PATCH v20 14/14] Documentation: dt: usable-memory and elfcorehdr nodes for arm64 kexec Geoff Levand
2016-06-23 17:54 ` Geoff Levand
2016-06-27 18:22 ` Thiago Jung Bauermann
2016-06-27 18:22 ` Thiago Jung Bauermann
2016-06-28 3:59 ` Michael Ellerman
2016-06-28 3:59 ` Michael Ellerman
2016-06-27 17:00 ` [PATCH v20 00/14] arm64 kexec kernel patches Catalin Marinas
2016-06-27 17:00 ` Catalin Marinas
2016-06-27 17:07 ` Geoff Levand
2016-06-27 17:07 ` Geoff Levand
2016-06-29 0:54 ` AKASHI Takahiro
2016-06-29 0:54 ` AKASHI Takahiro
2016-06-29 9:20 ` Catalin Marinas
2016-06-29 9:20 ` Catalin Marinas
2016-06-30 1:46 ` AKASHI Takahiro
2016-06-30 1:46 ` AKASHI Takahiro
2016-07-01 2:39 ` Pratyush Anand
2016-07-01 2:39 ` Pratyush Anand
2016-07-04 7:14 ` AKASHI Takahiro
2016-07-04 7:14 ` AKASHI Takahiro
2016-07-04 10:15 ` Pratyush Anand
2016-07-04 10:15 ` Pratyush Anand
2016-07-15 4:17 ` Simon Horman
2016-07-15 4:17 ` Simon Horman
2016-07-15 16:18 ` Geoff Levand
2016-07-15 16:18 ` Geoff Levand
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