From: Rob Herring <robh@kernel.org>
To: Victor Hassan <victor@allwinnertech.com>
Cc: "Marek Szyprowski" <m.szyprowski@samsung.com>,
"Russell King" <linux@armlinux.org.uk>,
"Russell King" <rmk+kernel@armlinux.org.uk>,
"Linus Walleij" <linus.walleij@linaro.org>,
yanfei.xu@windriver.com, "Ard Biesheuvel" <ardb@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Michał Mirosław" <mirq-linux@rere.qmqm.pl>,
"Arnd Bergmann" <arnd@arndb.de>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ARM: mmu: fix access to illegal address when using earlycon & memblock=debug
Date: Thu, 1 Sep 2022 08:49:19 -0500 [thread overview]
Message-ID: <CAL_Jsq+croyhct_=c3OGDnqd0N6GjL8aUgpD8D3YSDU3-VB1qw@mail.gmail.com> (raw)
In-Reply-To: <CAL_JsqKEEc=sWdNURUoM8mR675Fz-4VfsFQXxnPCtiOQ5QfM0w@mail.gmail.com>
On Thu, Sep 1, 2022 at 8:21 AM Rob Herring <robh@kernel.org> wrote:
>
> On Thu, Sep 1, 2022 at 7:54 AM Victor Hassan <victor@allwinnertech.com> wrote:
> >
> >
> >
> > On 2022/8/31 20:37, Victor Hassan wrote:
> > > On 8/31/2022 7:52 PM, Marek Szyprowski wrote:
> > >> Hi Victor,
> > >>
> > >> On 16.03.2022 03:33, Victor Hassan wrote:
> > >>> earlycon uses fixmap to create a memory map,
> > >>> So we need to close earlycon before closing fixmap,
> > >>> otherwise printk will access illegal addresses.
>
> How? Due to recent changes in how printk and the consoles work or just
> because create_mapping() can print? In the latter case, the only
> variable input is the phys address. I think most if not all prints
> cannot occur.
Ah, I missed the memblock debug part on the subject...
Rob
next prev parent reply other threads:[~2022-09-01 13:49 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-16 2:33 [PATCH] ARM: mmu: fix access to illegal address when using earlycon & memblock=debug Victor Hassan
2022-04-17 23:21 ` Linus Walleij
2022-04-18 15:08 ` Victor Hassan
2022-06-17 13:30 ` Victor Hassan
2022-06-28 8:34 ` Linus Walleij
[not found] ` <CGME20220831115257eucas1p20d37a01c51e42767860920a936255bd7@eucas1p2.samsung.com>
2022-08-31 11:52 ` Marek Szyprowski
2022-08-31 12:37 ` Victor Hassan
2022-09-01 12:53 ` Victor Hassan
2022-09-01 13:21 ` Rob Herring
2022-09-01 13:49 ` Rob Herring [this message]
2022-09-03 8:54 ` Victor Hassan
2022-08-31 13:51 ` Russell King (Oracle)
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='CAL_Jsq+croyhct_=c3OGDnqd0N6GjL8aUgpD8D3YSDU3-VB1qw@mail.gmail.com' \
--to=robh@kernel.org \
--cc=ardb@kernel.org \
--cc=arnd@arndb.de \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=m.szyprowski@samsung.com \
--cc=mirq-linux@rere.qmqm.pl \
--cc=rmk+kernel@armlinux.org.uk \
--cc=tglx@linutronix.de \
--cc=victor@allwinnertech.com \
--cc=yanfei.xu@windriver.com \
/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).