Re: powerpc/powernv: Fix oops on P9 DD1 in cause_ipi()

2017-04-27 Thread Michael Ellerman
On Wed, 2017-04-26 at 10:57:47 UTC, Michael Ellerman wrote: > Recently we merged the native xive support for Power9, and then separately > some > reworks for doorbell IPI support. In isolation both series were OK, but the > merged result had a bug in one case. > > On P9 DD1 we use pnv_p9_dd1_caus

[PATCH] powerpc/powernv: Fix oops on P9 DD1 in cause_ipi()

2017-04-26 Thread Michael Ellerman
Recently we merged the native xive support for Power9, and then separately some reworks for doorbell IPI support. In isolation both series were OK, but the merged result had a bug in one case. On P9 DD1 we use pnv_p9_dd1_cause_ipi() which tries to use doorbells, and then falls back to the interrup