From: Sascha Hauer <s.hauer@pengutronix.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org, lst@pengutronix.de, sam@ravnborg.org
Subject: Re: [PATCH v2 0/4] ARM: mmu: misc armv7 cache/MMU fixes
Date: Mon, 29 Apr 2019 08:59:00 +0200 [thread overview]
Message-ID: <20190429065900.n7tczvxxnm55nsay@pengutronix.de> (raw)
In-Reply-To: <20190425143232.25405-1-a.fatoum@pengutronix.de>
On Thu, Apr 25, 2019 at 04:32:28PM +0200, Ahmad Fatoum wrote:
> This series fixes a number of potential caching issues with armv7.
>
> They are:
>
> - Cortex-A7 erratum #814220
> Because of this erratum, the CPU may reorder cache maintenance operations
> when it shouldn't.
> - Wrong Cache invalidation order for Cortex-A7
> On the Cortex-A7, the L2 cache needs to be invalidated before the L1 cache.
> - Device memory isn't marked NX (Never eXecute)
> NX prevents the CPU instruction prefetcher from inadvertently
> accessing memory mapped devices
Applied, thanks
Sascha
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prev parent reply other threads:[~2019-04-29 6:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-25 14:32 Ahmad Fatoum
2019-04-25 14:32 ` [PATCH v2 1/4] ARM: cache-armv7: work around Cortex-A7 erratum 814220 Ahmad Fatoum
2019-04-25 14:32 ` [PATCH v2 2/4] ARM: cache-armv7: start invalidation from outer levels Ahmad Fatoum
2019-04-25 14:38 ` [PATCH v2 2/4] fixup! " Ahmad Fatoum
2019-04-25 14:32 ` [PATCH v2 3/4] ARM: mmu: remove doubly defined macro Ahmad Fatoum
2019-04-25 14:32 ` [PATCH v2 4/4] ARM: mmu: mark uncached regions as eXecute never on v7 Ahmad Fatoum
2019-04-29 6:59 ` Sascha Hauer [this message]
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