This is a note to let you know that I've just added the patch titled
powerpc/powernv: Properly set "host-ipi" on IPIs
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-powernv-properly-set-host-ipi-on-ipis.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Jun 15 11:12:23 CEST 2017
From: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 23 May 2017 21:53:46 -0400
Subject: powerpc/powernv: Properly set "host-ipi" on IPIs
From: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
[ Upstream commit f83e6862047e1e371bdc5d512dd6cabe8a3965b8 ]
Otherwise KVM will fail to pass them through to the host
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/sysdev/xics/icp-opal.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/powerpc/sysdev/xics/icp-opal.c
+++ b/arch/powerpc/sysdev/xics/icp-opal.c
@@ -130,14 +130,16 @@ static void icp_opal_cause_ipi(int cpu,
{
int hw_cpu = get_hard_smp_processor_id(cpu);
+ kvmppc_set_host_ipi(cpu, 1);
opal_int_set_mfrr(hw_cpu, IPI_PRIORITY);
}
static irqreturn_t icp_opal_ipi_action(int irq, void *dev_id)
{
- int hw_cpu = hard_smp_processor_id();
+ int cpu = smp_processor_id();
- opal_int_set_mfrr(hw_cpu, 0xff);
+ kvmppc_set_host_ipi(cpu, 0);
+ opal_int_set_mfrr(get_hard_smp_processor_id(cpu), 0xff);
return smp_ipi_demux();
}
Patches currently in stable-queue which might be from benh@xxxxxxxxxxxxxxxxxxx are
queue-4.9/powerpc-powernv-properly-set-host-ipi-on-ipis.patch