LinuxPPC-Dev Archive on lore.kernel.org
 help / color / Atom feed
From: Andreas Schwab <schwab@linux-m68k.org>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: linuxppc-dev@lists.ozlabs.org, Paul Mackerras <paulus@samba.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/32s: Setup the early hash table at all time.
Date: Thu, 29 Oct 2020 22:07:41 +0100
Message-ID: <87wnz8vizm.fsf@igel.home> (raw)
In-Reply-To: <b8f8101c368b8a6451844a58d7bd7d83c14cf2aa.1601566529.git.christophe.leroy@csgroup.eu> (Christophe Leroy's message of "Thu, 1 Oct 2020 15:35:38 +0000 (UTC)")

On Okt 01 2020, Christophe Leroy wrote:

> At the time being, an early hash table is set up when
> CONFIG_KASAN is selected.
>
> There is nothing wrong with setting such an early hash table
> all the time, even if it is not used. This is a statically
> allocated 256 kB table which lies in the init data section.
>
> This makes the code simpler and may in the future allow to
> setup early IO mappings with fixmap instead of hard coding BATs.
>
> Put create_hpte() and flush_hash_pages() in the .ref.text section
> in order to avoid warning for the reference to early_hash[]. This
> reference is removed by MMU_init_hw_patch() before init memory is
> freed.

This breaks booting on the iBook G4.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."

  parent reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01 15:35 Christophe Leroy
2020-10-09  6:03 ` Michael Ellerman
2020-10-29 21:07 ` Andreas Schwab [this message]
2020-10-30  5:19   ` Michael Ellerman
2020-10-30  9:09     ` Andreas Schwab
2020-10-30 13:00       ` Christophe Leroy
2020-10-30 13:11         ` Andreas Schwab
2020-11-03  7:41           ` Christophe Leroy
2020-11-03  8:43             ` Andreas Schwab
2020-11-03  8:56             ` Andreas Schwab
2020-11-03 18:58             ` Serge Belyshev
2020-11-04  6:44               ` Christophe Leroy
2020-11-04  7:57                 ` Serge Belyshev
2020-11-04  9:28                   ` Serge Belyshev
2020-11-04 14:53                     ` Serge Belyshev
2020-11-07  9:12   ` Christophe Leroy

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=87wnz8vizm.fsf@igel.home \
    --to=schwab@linux-m68k.org \
    --cc=christophe.leroy@csgroup.eu \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=paulus@samba.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

LinuxPPC-Dev Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linuxppc-dev/0 linuxppc-dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linuxppc-dev linuxppc-dev/ https://lore.kernel.org/linuxppc-dev \
		linuxppc-dev@lists.ozlabs.org linuxppc-dev@ozlabs.org
	public-inbox-index linuxppc-dev

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.ozlabs.lists.linuxppc-dev


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git