linux-arm-kernel.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/6] Enable L2 cache support on Exynos4210/4x12 SoCs
Date: Wed, 25 Jun 2014 14:50:39 +0100	[thread overview]
Message-ID: <20140625135039.GM3705@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1403703451-12233-1-git-send-email-t.figa@samsung.com>

On Wed, Jun 25, 2014 at 03:37:25PM +0200, Tomasz Figa wrote:
> This series intends to add support for L2 cache on Exynos4 SoCs on boards
> running under secure firmware, which requires certain initialization steps
> to be done with help of firmware, as selected registers are writable only
> from secure mode.

What I said in my message on June 12th applies to this series.  I'm
not having the virtual address exposed via the write_sec call.

Yes, you need to read other registers in order to use your secure
firmware implementation.  Let's fix that by providing a better write_sec
interface so you don't have to read back these registers, rather than
working around this short-coming.

That's exactly what I meant when I talked on June 12th about turning
cache-l2x0.c back into a pile of crap.  You're working around problems
rather than fixing the underlying issue, as seems to be standard
platform maintainer behaviour when things like core ARM code is
concerned.  This is why things devolve over time into piles of crap,
because platforms just hack around problems rather than fixing the
root cause of the problem.

So... I'm NAKing the entire series.

-- 
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.

  parent reply	other threads:[~2014-06-25 13:50 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-25 13:37 [PATCH v2 0/6] Enable L2 cache support on Exynos4210/4x12 SoCs Tomasz Figa
2014-06-25 13:37 ` [PATCH v2 1/6] ARM: mm: cache-l2x0: Add base address argument to write_sec callback Tomasz Figa
2014-06-27  7:44   ` Linus Walleij
2014-06-25 13:37 ` [PATCH v2 2/6] ARM: Get outer cache .write_sec callback from mach_desc only if not NULL Tomasz Figa
2014-06-25 13:37 ` [PATCH v2 3/6] ARM: mm: cache-l2x0: Use l2c_write_sec() for LATENCY_CTRL registers Tomasz Figa
2014-06-25 13:37 ` [PATCH v2 4/6] ARM: mm: l2x0: Add support for overriding prefetch settings Tomasz Figa
2014-06-25 13:37 ` [PATCH v2 5/6] ARM: EXYNOS: Add .write_sec outer cache callback for L2C-310 Tomasz Figa
2014-06-25 13:37 ` [PATCH v2 6/6] ARM: dts: exynos4: Add nodes for L2 cache controller Tomasz Figa
2014-06-25 13:50 ` Russell King - ARM Linux [this message]
2014-06-25 14:13   ` [PATCH v2 0/6] Enable L2 cache support on Exynos4210/4x12 SoCs Tomasz Figa
2014-06-25 14:37     ` Russell King - ARM Linux
2014-06-25 15:46       ` Tomasz Figa

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=20140625135039.GM3705@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).