From: Michael Ellerman <mpe@ellerman.id.au>
To: Mike Rapoport <rppt@kernel.org>
Cc: linux-kernel@vger.kernel.org, Mike Rapoport <rppt@linux.ibm.com>,
linux-mm@kvack.org, Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc: add support for folded p4d page tables
Date: Tue, 07 Jan 2020 15:24:15 +1100 [thread overview]
Message-ID: <87tv5728sw.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20200106060217.GA5444@rapoport-lnx>
Mike Rapoport <rppt@kernel.org> writes:
> On Mon, Jan 06, 2020 at 02:31:41PM +1100, Michael Ellerman wrote:
>> Mike Rapoport <rppt@kernel.org> writes:
>> > Any updates on this?
>>
>> It's very ... big, and kind of intrusive.
>
> I've tried to split it to several smaller ones, but I couldn't find a way
> to do it without breaking bisectability.
Yeah I didn't necessarily mean splitting it, it's just a lot of churn.
It seems to break qemu mac99 booting pmac32 defconfig, haven't had time
to look any further:
Loading compiled-in X.509 certificates
rtc-generic rtc-generic: setting system clock to 2020-01-07T02:42:59 UTC (1578364979)
BUG: Unable to handle kernel unaligned access at 0xf10af004
Faulting instruction address: 0xc01cc6c4
Vector: 600 (Alignment) at [ef0b5de0]
pc: c01cc6c4: f_dupfd+0x6c/0xb8
lr: c01cc698: f_dupfd+0x40/0xb8
sp: ef0b5e98
msr: 9032
dar: f10af004
dsisr: 40000140
current = 0xef0b0000
pid = 1, comm = swapper
Linux version 5.5.0-rc2+ (michael@alpine1-p1) (gcc version 9.2.1 20191127 (Ubuntu 9.2.1-20ubuntu3)) #8 Tue Jan 7 13:38:04 AEDT 2020
enter ? for help
[ef0b5eb8] c000550c console_on_rootfs+0x44/0x90
[ef0b5ed8] c090d7c0 kernel_init_freeable+0x1a4/0x24c
[ef0b5f18] c0005770 kernel_init+0x18/0x108
[ef0b5f38] c0017274 ret_from_kernel_thread+0x14/0x1c
FAIL! Booting BE pmac32
cheers
WARNING: multiple messages have this Message-ID (diff)
From: Michael Ellerman <mpe@ellerman.id.au>
To: Mike Rapoport <rppt@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Mike Rapoport <rppt@linux.ibm.com>
Subject: Re: [PATCH] powerpc: add support for folded p4d page tables
Date: Tue, 07 Jan 2020 15:24:15 +1100 [thread overview]
Message-ID: <87tv5728sw.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20200106060217.GA5444@rapoport-lnx>
Mike Rapoport <rppt@kernel.org> writes:
> On Mon, Jan 06, 2020 at 02:31:41PM +1100, Michael Ellerman wrote:
>> Mike Rapoport <rppt@kernel.org> writes:
>> > Any updates on this?
>>
>> It's very ... big, and kind of intrusive.
>
> I've tried to split it to several smaller ones, but I couldn't find a way
> to do it without breaking bisectability.
Yeah I didn't necessarily mean splitting it, it's just a lot of churn.
It seems to break qemu mac99 booting pmac32 defconfig, haven't had time
to look any further:
Loading compiled-in X.509 certificates
rtc-generic rtc-generic: setting system clock to 2020-01-07T02:42:59 UTC (1578364979)
BUG: Unable to handle kernel unaligned access at 0xf10af004
Faulting instruction address: 0xc01cc6c4
Vector: 600 (Alignment) at [ef0b5de0]
pc: c01cc6c4: f_dupfd+0x6c/0xb8
lr: c01cc698: f_dupfd+0x40/0xb8
sp: ef0b5e98
msr: 9032
dar: f10af004
dsisr: 40000140
current = 0xef0b0000
pid = 1, comm = swapper
Linux version 5.5.0-rc2+ (michael@alpine1-p1) (gcc version 9.2.1 20191127 (Ubuntu 9.2.1-20ubuntu3)) #8 Tue Jan 7 13:38:04 AEDT 2020
enter ? for help
[ef0b5eb8] c000550c console_on_rootfs+0x44/0x90
[ef0b5ed8] c090d7c0 kernel_init_freeable+0x1a4/0x24c
[ef0b5f18] c0005770 kernel_init+0x18/0x108
[ef0b5f38] c0017274 ret_from_kernel_thread+0x14/0x1c
FAIL! Booting BE pmac32
cheers
next prev parent reply other threads:[~2020-01-07 4:26 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-09 15:09 [PATCH] powerpc: add support for folded p4d page tables Mike Rapoport
2019-12-09 15:09 ` Mike Rapoport
2019-12-09 17:46 ` Christophe Leroy
2019-12-09 17:46 ` Christophe Leroy
2019-12-09 18:33 ` Matthew Wilcox
2019-12-09 18:33 ` Matthew Wilcox
2020-01-02 8:11 ` Mike Rapoport
2020-01-02 8:11 ` Mike Rapoport
2020-01-02 16:42 ` Christophe Leroy
2020-01-02 16:42 ` Christophe Leroy
2020-01-05 7:02 ` Mike Rapoport
2020-01-05 7:02 ` Mike Rapoport
2020-01-07 11:12 ` Christophe Leroy
2020-01-07 11:12 ` Christophe Leroy
2020-01-06 3:31 ` Michael Ellerman
2020-01-06 3:31 ` Michael Ellerman
2020-01-06 6:02 ` Mike Rapoport
2020-01-06 6:02 ` Mike Rapoport
2020-01-07 4:24 ` Michael Ellerman [this message]
2020-01-07 4:24 ` Michael Ellerman
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=87tv5728sw.fsf@mpe.ellerman.id.au \
--to=mpe@ellerman.id.au \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=paulus@samba.org \
--cc=rppt@kernel.org \
--cc=rppt@linux.ibm.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.