David Miller wrote:
From: Daniel Hellstrom <daniel@xxxxxxxxxxx>
Date: Mon, 02 May 2011 12:07:49 +0200
I have made a new set of IPI patches, this time it includes patches
for all SPARC32 architectures. It looks to me as if sun4d does not
have a pending soft-IRQ register, so I handle it as a normal hard IRQ.
I'm not sure if I should add a STBAR/memory barrier or a spinlock to
the sun4d implementation of smp4d_ipi_{single,mask_one,resched}. I'm a
bit worried that the memory write happens after the IPI is generated
to the other CPUs. Also, I'm not sure that IRQ14 is the best choice
for IPI, the best is probably of put it on a separate IRQ but I don't
know if there are free IRQs.
I hope that someone could try SMP on sun4m and sun4d with these
patches.
I'm not going to hold these patches back, if we find bugs that
need to be fixed on sun4m/sun4d then we will simply fix them.
Thanks for fixing a problem we've had for such a long time.
Thanks for applying these pathes. From now on LEON SMP users can run
vanilla kernels.
Daniel
--
To unsubscribe from this list: send the line "unsubscribe sparclinux" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
