From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Sun, 31 Jan 2016 18:25:51 +0100 Subject: [PATCH v4 11/13] PM / Hibernate: Call flush_icache_range() on pages restored in-place In-Reply-To: <1453977766-20907-12-git-send-email-james.morse@arm.com> References: <1453977766-20907-1-git-send-email-james.morse@arm.com> <1453977766-20907-12-git-send-email-james.morse@arm.com> Message-ID: <20160131172551.GB3721@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu 2016-01-28 10:42:44, 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. Modify the read and decompress code to call > flush_icache_range() on all pages that are restored, so that the restored > in-place pages are guaranteed to be executable on these architectures. > > Signed-off-by: James Morse Acked-by: Pavel Machek -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html