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| author |   Paul Mackerras <paulus@samba.org> | 2015-03-19 19:29:01 +1100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2015-03-20 14:51:53 +1100 |
| commit | 755563bc79c764c90b9f44db5e4fe6c556d3440c (patch) | |
| tree | cfd171d1144b36cfcfac76685ad284fb54589259 /arch/powerpc/kernel/cputable.c | |
| parent | Linux 4.0-rc4 (diff) | |
| download | linux-dev-755563bc79c764c90b9f44db5e4fe6c556d3440c.tar.xz linux-dev-755563bc79c764c90b9f44db5e4fe6c556d3440c.zip | |
powerpc/powernv: Fixes for hypervisor doorbell handling
Since we can now use hypervisor doorbells for host IPIs, this makes
sure we clear the host IPI flag when taking a doorbell interrupt, and
clears any pending doorbell IPI in pnv_smp_cpu_kill_self() (as we
already do for IPIs sent via the XICS interrupt controller). Otherwise
if there did happen to be a leftover pending doorbell interrupt for
an offline CPU thread for any reason, it would prevent that thread from
going into a power-saving mode; it would instead keep waking up because
of the interrupt.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/cputable.c')
0 files changed, 0 insertions, 0 deletions