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From: james.morse@arm.com (James Morse)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v7 12/16] arm64: Add new asm macro copy_page
Date: Wed, 20 Apr 2016 17:56:58 +0100	[thread overview]
Message-ID: <5717B4DA.1090309@arm.com> (raw)
In-Reply-To: <20160420163814.GF11377@e104818-lin.cambridge.arm.com>

On 20/04/16 17:38, Catalin Marinas wrote:
> On Fri, Apr 01, 2016 at 05:53:36PM +0100, James Morse wrote:
>> From: Geoff Levand <geoff@infradead.org>
>>
>> Kexec and hibernate need to copy pages of memory, but may not have all
>> of the kernel mapped, and are unable to call copy_page().
>>
>> Add a simplistic copy_page() macro, that can be inlined in these
>> situations. lib/copy_page.S provides a bigger better version, but
>> uses more registers.
>>
>> Signed-off-by: Geoff Levand <geoff@infradead.org>
>> [Changed asm label to 9998, added commit message]
>> Signed-off-by: James Morse <james.morse@arm.com>
> 
> Good enough for the brief usage:
> 
> Acked-by: Catalin Marinas <catalin.marinas@arm.com>

Thanks,

> Would there be another user of this macro in the future (kexec)?

Yes, this is one of the patches common to the two. Adding this macro was some
review feedback from kexec v12 [0].


Thanks,
James

[0] http://lists.infradead.org/pipermail/kexec/2015-December/014959.html

  reply	other threads:[~2016-04-20 16:56 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-01 16:53 [PATCH v7 00/16] arm64: kernel: Add support for hibernate/suspend-to-disk James Morse
2016-04-01 16:53 ` [PATCH v7 01/16] arm64: KVM: Register CPU notifiers when the kernel runs at HYP James Morse
2016-04-18 16:10   ` Catalin Marinas
2016-04-19  8:58     ` James Morse
2016-04-19 14:39       ` Marc Zyngier
2016-04-01 16:53 ` [PATCH v7 02/16] arm64: Fold proc-macros.S into assembler.h James Morse
2016-04-18 16:11   ` Catalin Marinas
2016-04-01 16:53 ` [PATCH v7 03/16] arm64: Cleanup SCTLR flags James Morse
2016-04-19 14:44   ` Marc Zyngier
2016-04-01 16:53 ` [PATCH v7 04/16] arm64: kvm: Move the do_el2_call macro to a header file James Morse
2016-04-19 15:02   ` Marc Zyngier
2016-04-19 15:05     ` James Morse
2016-04-19 15:10       ` Marc Zyngier
2016-04-01 16:53 ` [PATCH v7 05/16] arm64: kvm: Move lr save/restore from do_el2_call into EL1 James Morse
2016-04-19 15:11   ` Marc Zyngier
2016-04-01 16:53 ` [PATCH v7 06/16] arm64: hyp/kvm: Extend hyp-stub API to allow function calls at EL2 James Morse
2016-04-19 15:22   ` Marc Zyngier
2016-04-01 16:53 ` [PATCH v7 07/16] arm64: kvm: allows kvm cpu hotplug James Morse
2016-04-19 16:03   ` Marc Zyngier
2016-04-19 17:37     ` James Morse
2016-04-20 10:29       ` AKASHI Takahiro
2016-04-20 11:19         ` James Morse
2016-04-20 10:37       ` Marc Zyngier
2016-04-20 11:19         ` James Morse
2016-04-20 11:46           ` Marc Zyngier
2016-04-25  8:41           ` AKASHI Takahiro
2016-04-25  9:16             ` James Morse
2016-04-25  9:28               ` Marc Zyngier
2016-04-01 16:53 ` [PATCH v7 08/16] arm64: kernel: Rework finisher callback out of __cpu_suspend_enter() James Morse
2016-04-18 17:20   ` Catalin Marinas
2016-04-01 16:53 ` [PATCH v7 09/16] arm64: Change cpu_resume() to enable mmu early then access sleep_sp by va James Morse
2016-04-20 16:24   ` Catalin Marinas
2016-04-01 16:53 ` [PATCH v7 10/16] arm64: kernel: Include _AC definition in page.h James Morse
2016-04-20 16:25   ` Catalin Marinas
2016-04-01 16:53 ` [PATCH v7 11/16] arm64: Promote KERNEL_START/KERNEL_END definitions to a header file James Morse
2016-04-20 16:26   ` Catalin Marinas
2016-04-01 16:53 ` [PATCH v7 12/16] arm64: Add new asm macro copy_page James Morse
2016-04-20 16:38   ` Catalin Marinas
2016-04-20 16:56     ` James Morse [this message]
2016-04-01 16:53 ` [PATCH v7 13/16] arm64: head.S: el2_setup() to accept sctlr_el1 as an argument James Morse
2016-04-20 17:12   ` Catalin Marinas
2016-04-20 17:35     ` James Morse
2016-04-22 10:36       ` Catalin Marinas
2016-04-01 16:53 ` [PATCH v7 14/16] PM / Hibernate: Call flush_icache_range() on pages restored in-place James Morse
2016-04-20 17:16   ` Catalin Marinas
2016-04-01 16:53 ` [PATCH v7 15/16] arm64: kernel: Add support for hibernate/suspend-to-disk James Morse
2016-04-22 10:29   ` Catalin Marinas
2016-04-25  9:19     ` James Morse
2016-04-01 16:53 ` [PATCH v7 16/16] arm64: hibernate: Prevent resume from a different kernel version James Morse
2016-04-10 12:16   ` Ard Biesheuvel
2016-04-13 16:35     ` James Morse
2016-04-13 16:31 ` [PATCH v7 17/16] arm64: hibernate: Refuse to hibernate if the boot cpu is offline James Morse
2016-04-21 11:33   ` Lorenzo Pieralisi
2016-04-21 11:44   ` Mark Rutland
2016-04-21 12:33     ` Mark Rutland
2016-04-21 16:28       ` Lorenzo Pieralisi
2016-04-22 10:41         ` Mark Rutland
2016-04-22 15:32           ` James Morse
2016-04-22 10:41   ` Catalin Marinas
2016-04-22 15:32     ` James Morse

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