3.0-rc1: powerpc hangs at Kernel virtual memory layout

[Benjamin Herrenschmidt]

On Sun, 2011-06-05 at 19:11 -0700, Christian Kujau wrote:
> On Thu, 2 Jun 2011 at 17:33, Benjamin Herrenschmidt wrote:
> > It -looks- to me that something goes wrong in the tty code when a large
> > file is piped through a pty, causing the kernel to hang for minutes in
> > the workqueue / ldisk flush code. I've just sent an initial report to
> > Alan Cox about it and am currently bisecting it.
> 
> This was the "tty vs workqueue oddities" thread, right? FWIW, 
> 55db4c64eddf37 ("Revert "tty: make receive_buf() return the amout of bytes 
> received"") seems to have fixed it on this powerpc machine as well.

Yup.

> With your "ssb: pci: Don't call PCIe specific workarounds on PCI cores" 
> patch applied, powerpc32 seems to be quite happy with 3.0-rc1+

Good :-)

Cheers,
Ben.