From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 09/10] PM / Hibernate: Publish pages restored in-place to arch code
Date: Sat, 5 Dec 2015 10:35:34 +0100 [thread overview]
Message-ID: <20151205093534.GA7569@amd> (raw)
In-Reply-To: <1448559168-8363-10-git-send-email-james.morse@arm.com>
On Thu 2015-11-26 17:32:47, James Morse wrote:
> Some architectures require code written to memory as if it were data to be
> 'cleaned' from any data caches before the processor can fetch them as new
> instructions.
>
> During resume from hibernate, the snapshot code copies some pages directly,
> meaning these architectures do not get a chance to perform their cache
> maintenance. Create a new list of pages that were restored in place, so
> that the arch code can perform this maintenance when necessary.
Umm. Could the copy function be modified to do the neccessary
flushing, instead?
Alternatively, can you just clean the whole cache before jumping to
the new kernel?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2015-12-05 9:35 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-26 17:32 [PATCH v3 00/10] arm64: kernel: Add support for hibernate/suspend-to-disk James Morse
2015-11-26 17:32 ` [PATCH v3 01/10] arm64: Fold proc-macros.S into assembler.h James Morse
2015-12-01 9:18 ` Pavel Machek
2015-11-26 17:32 ` [PATCH v3 02/10] arm64: Convert hcalls to use HVC immediate value James Morse
2015-11-26 17:32 ` [PATCH v3 03/10] arm64: Add new hcall HVC_CALL_FUNC James Morse
2015-11-26 17:32 ` [PATCH v3 04/10] arm64: kvm: allows kvm cpu hotplug James Morse
2015-11-26 17:32 ` [PATCH v3 05/10] arm64: kernel: Rework finisher callback out of __cpu_suspend_enter() James Morse
2015-11-26 17:32 ` [PATCH v3 06/10] arm64: Change cpu_resume() to enable mmu early then access sleep_sp by va James Morse
2015-11-26 17:32 ` [PATCH v3 07/10] arm64: kernel: Include _AC definition in page.h James Morse
2015-12-01 9:28 ` Pavel Machek
2015-11-26 17:32 ` [PATCH v3 08/10] arm64: Promote KERNEL_START/KERNEL_END definitions to a header file James Morse
2015-12-01 9:28 ` Pavel Machek
2015-11-26 17:32 ` [PATCH v3 09/10] PM / Hibernate: Publish pages restored in-place to arch code James Morse
2015-12-03 12:09 ` Lorenzo Pieralisi
2015-12-04 16:26 ` James Morse
2015-12-05 9:35 ` Pavel Machek [this message]
2015-12-07 11:28 ` James Morse
2015-12-08 8:19 ` Pavel Machek
2015-12-16 9:55 ` James Morse
2015-11-26 17:32 ` [PATCH v3 10/10] arm64: kernel: Add support for hibernate/suspend-to-disk James Morse
2015-12-01 9:31 ` Pavel Machek
2015-12-08 10:39 ` James Morse
2015-12-08 11:48 ` [PATCH] fixup! " James Morse
2015-12-15 17:42 ` [PATCH v3 10/10] " Catalin Marinas
2015-12-18 11:37 ` [ALT-PATCH v3 9/10] PM / Hibernate: Call flush_icache_range() on pages restored in-place James Morse
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