From: Guenter Roeck <linux@roeck-us.net>
To: Keith Busch <kbusch@kernel.org>
Cc: Keith Busch <kbusch@meta.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
willy@infradead.org, hch@lst.de, tonyb@cybernetics.com,
akpm@linux-foundation.org, kernel-team@meta.com
Subject: Re: [PATCHv4 11/12] dmapool: link blocks across pages
Date: Mon, 27 Feb 2023 18:18:08 -0800 [thread overview]
Message-ID: <20230228021808.GB3955901@roeck-us.net> (raw)
In-Reply-To: <Y/1SfK4//04Tznvy@kbusch-mbp.dhcp.thefacebook.com>
On Mon, Feb 27, 2023 at 06:01:48PM -0700, Keith Busch wrote:
> On Sun, Feb 26, 2023 at 04:54:45PM -0800, Guenter Roeck wrote:
> > With this patch in linux-next, I see a boot failure when trying to boot
> > a powernv qemu emulation from the SCSI MEGASAS controller.
> >
> > Qemu command line is
> >
> > qemu-system-ppc64 -M powernv -cpu POWER9 -m 2G \
> > -kernel arch/powerpc/boot/zImage.epapr \
> > -snapshot \
> > -device megasas,id=scsi,bus=pcie.0 -device scsi-hd,bus=scsi.0,drive=d0 \
> > -drive file=rootfs-el.ext2,format=raw,if=none,id=d0 \
> > -device i82557a,netdev=net0,bus=pcie.1 -netdev user,id=net0 \
> > -nographic -vga none -monitor null -no-reboot \
> > --append "root=/dev/sda console=tty console=hvc0"
> >
> > Reverting this patch together with "dmapool: create/destroy cleanup"
> > fixes the problem.
>
> Thanks for the notice. I was able to recreate, and it does look like this is
> fixed with my more recent update changing the dma pool block order, and that is
> still pending out of tree. Would you also be able to verify? The patch is
> available here:
>
> https://lore.kernel.org/linux-mm/Y%2FzmUXrAiNujjoib@kbusch-mbp.dhcp.thefacebook.com/T/#t
Yes, that fixes the problem I have observed. I sent a Tested-by:
a minute ago.
Guenter
next prev parent reply other threads:[~2023-02-28 2:18 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-26 21:51 [PATCHv4 00/12] dmapool enhancements Keith Busch
2023-01-26 21:51 ` [PATCHv4 01/12] dmapool: add alloc/free performance test Keith Busch
2023-01-26 21:51 ` [PATCHv4 02/12] dmapool: remove checks for dev == NULL Keith Busch
2023-01-26 21:51 ` [PATCHv4 03/12] dmapool: use sysfs_emit() instead of scnprintf() Keith Busch
2023-01-26 21:51 ` [PATCHv4 04/12] dmapool: cleanup integer types Keith Busch
2023-01-26 21:51 ` [PATCHv4 05/12] dmapool: speedup DMAPOOL_DEBUG with init_on_alloc Keith Busch
2023-01-26 21:51 ` [PATCHv4 06/12] dmapool: move debug code to own functions Keith Busch
2023-01-26 21:51 ` [PATCHv4 07/12] dmapool: rearrange page alloc failure handling Keith Busch
2023-01-26 21:51 ` [PATCHv4 08/12] dmapool: consolidate page initialization Keith Busch
2023-01-26 21:51 ` [PATCHv4 09/12] dmapool: simplify freeing Keith Busch
2023-01-26 21:51 ` [PATCHv4 10/12] dmapool: don't memset on free twice Keith Busch
2023-01-26 21:51 ` [PATCHv4 11/12] dmapool: link blocks across pages Keith Busch
2023-02-01 17:42 ` Bryan O'Donoghue
2023-02-01 17:43 ` Keith Busch
2023-02-02 0:38 ` Bryan O'Donoghue
2023-02-27 0:54 ` Guenter Roeck
2023-02-28 1:01 ` Keith Busch
2023-02-28 2:18 ` Guenter Roeck [this message]
2023-01-26 21:51 ` [PATCHv4 12/12] dmapool: create/destroy cleanup Keith Busch
2023-01-26 22:22 ` [PATCHv4 00/12] dmapool enhancements Andrew Morton
2023-01-27 0:27 ` Keith Busch
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