From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/5] ARM: Add Broadcom Brahma-B15 readahead cache support
Date: Tue, 17 Mar 2015 17:29:30 +0000 [thread overview]
Message-ID: <20150317172930.GY8399@arm.com> (raw)
In-Reply-To: <1425689693-31034-3-git-send-email-f.fainelli@gmail.com>
On Sat, Mar 07, 2015 at 12:54:50AM +0000, Florian Fainelli wrote:
> This patch adds support for the Broadcom Brahma-B15 CPU readahead cache
> controller. This cache controller sits between the L2 and the memory bus
> and its purpose is to provide a friendler burst size towards the DDR
> interface than the native cache line size.
>
> The readahead cache is mostly transparent, except for
> flush_kern_cache_all, flush_kern_cache_louis and flush_icache_all, which
> is precisely what we are overriding here.
I'm struggling to understand why you care about flush_kern_cache_louis
and flush_icache_all for a cache that sits the other side of the L2.
Can you explain why we need to do anything in these cases, please?
Will
next prev parent reply other threads:[~2015-03-17 17:29 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-07 0:54 [PATCH 0/5] ARM: Broadcom Brahma-B15 readahead cache support Florian Fainelli
2015-03-07 0:54 ` [PATCH 1/5] ARM: v7: allow setting different cache functions Florian Fainelli
2015-03-07 0:54 ` [PATCH 2/5] ARM: Add Broadcom Brahma-B15 readahead cache support Florian Fainelli
2015-03-16 21:02 ` Russell King - ARM Linux
2015-03-16 21:20 ` Florian Fainelli
2015-03-17 0:10 ` Russell King - ARM Linux
2015-03-17 0:32 ` Florian Fainelli
2015-03-17 17:29 ` Will Deacon [this message]
2015-03-17 18:02 ` Florian Fainelli
2015-03-23 11:14 ` Will Deacon
2015-07-27 18:47 ` Florian Fainelli
2015-03-07 0:54 ` [PATCH 3/5] ARM: Hook B15 readahead cache functions based on processor Florian Fainelli
2015-03-07 0:54 ` [PATCH 4/5] ARM: B15: Add CPU hotplug awareness Florian Fainelli
2015-03-07 0:54 ` [PATCH 5/5] ARM: B15: Add suspend/resume hooks Florian Fainelli
2015-03-16 18:33 ` [PATCH 0/5] ARM: Broadcom Brahma-B15 readahead cache support Florian Fainelli
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