From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: imx6: fix v7_invalidate_l1 by adding I-Cache invalidation
Date: Tue, 3 Jan 2012 17:28:45 +0000 [thread overview]
Message-ID: <20120103172845.GD2914@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <CAB4PhKexxJM+rWhgdQfu9vB16KVT6QpN1ye4kH88pNiLnEyL+Q@mail.gmail.com>
On Fri, Dec 30, 2011 at 06:47:05PM +0800, Jason Liu wrote:
> I looked the code: arch/arm/mm/proc-v7.S:
>
> #ifdef HARVARD_CACHE
> mcr p15, 0, r10, c7, c5, 0 @ I+BTB cache invalidate
> #endif
> dsb
> #ifdef CONFIG_MMU
> mcr p15, 0, r10, c8, c7, 0 @ invalidate I + D TLBs
> mcr p15, 0, r10, c2, c0, 2 @ TTB control register
> ALT_SMP(orr r4, r4, #TTB_FLAGS_SMP)
> ALT_UP(orr r4, r4, #TTB_FLAGS_UP)
> mcr p15, 0, r4, c2, c0, 1 @ load TTB1
>
> It seems that it will try to invalidate when HARVARD_CACHE define. But
> HARVARD_CACHE only defined in v6, why?
It's probably a mistake caused when copying proc-v6.S to proc-v7.S and
editing it - which I believe is how proc-v7.S was created. Suggest you
ask Catalin to find out more details.
next prev parent reply other threads:[~2012-01-03 17:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-30 9:26 [PATCH] ARM: imx6: fix v7_invalidate_l1 by adding I-Cache invalidation Shawn Guo
2011-12-30 10:47 ` Jason Liu
2011-12-31 9:21 ` Shawn Guo
2012-01-03 17:41 ` Russell King - ARM Linux
2012-01-03 17:28 ` Russell King - ARM Linux [this message]
2012-01-03 17:58 ` Catalin Marinas
2012-01-05 6:37 ` [PATCH] ARM: proc-v7: remove harvard cache stuff Shawn Guo
2012-01-05 6:42 ` Kyungmin Park
2012-01-05 9:48 ` Catalin Marinas
2012-01-17 14:18 ` Will Deacon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120103172845.GD2914@n2100.arm.linux.org.uk \
--to=linux@arm.linux.org.uk \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).