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@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#t Yes, that fixes the problem I have observed. I sent a Tested-by: a minute ago. Guenter
