Re: ppc64 qemu test failure since commit f9aa67142 ("powerpc/64s: Consolidate Alignment 0x600 interrupt")

From: Guenter Roeck
Date: Mon Oct 10 2016 - 08:46:42 EST


Hi Michael,

On 10/09/2016 11:00 PM, Michael Ellerman wrote:
Guenter Roeck <linux@xxxxxxxxxxxx> writes:

Nicholas,

some of my qemu tests for ppc64 started failing on mainline (and -next).
You can find a test log at
http://kerneltests.org/builders/qemu-ppc64-master/builds/580/steps/qemubuildcommand/logs/stdio

The scripts to run the test are available at
https://github.com/groeck/linux-build-test/tree/master/rootfs/ppc64

Bisect points to commit f9aa67142ef26 ("powerpc/64s: Consolidate Alignment 0x600
interrupt"). Bisect log is attached.

Since I don't have the means to run the code on a real system, I have no idea
if the problem is caused by qemu or by the code. It is interesting, though, that
only the 'mac99' tests are affected.

Thanks for the report.

I do test qemu mac99 as part of my CI, and it's booting OK, so there
must be some config difference?

I'm using pmac32_defconfig plus:

CONFIG_LOCALVERSION_AUTO=y
CONFIG_SERIAL_PMACZILOG=y
CONFIG_SERIAL_PMACZILOG_TTYS=n
CONFIG_SERIAL_PMACZILOG_CONSOLE=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y

And running with:

$ qemu-system-ppc -nographic -vga none -M mac99 -m 1G -kernel vmlinux -initrd $HOME/static/ppc32-initrd.gz -append "console=ttyPZ0 init=/bin/sh"


I am building a 64bit image, and my test runs with qemu-system-ppc64.
My 32bit tests for mac99 are fine as well.

Guenter