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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: linuxppc-dev@ozlabs.org
Cc: Paul Mackerras <pmac@au1.ibm.com>
Subject: [PATCH 2/2] powerpc/powernv: Properly set "host-ipi" on IPIs
Date: Tue, 07 Feb 2017 11:35:36 +1100	[thread overview]
Message-ID: <1486427736.4850.103.camel@kernel.crashing.org> (raw)

Otherwise KVM will fail to pass them through to the host

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/sysdev/xics/icp-opal.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/sysdev/xics/icp-opal.c b/arch/powerpc/sysdev/xics/icp-opal.c
index c96c0cb..f9670ea 100644
--- a/arch/powerpc/sysdev/xics/icp-opal.c
+++ b/arch/powerpc/sysdev/xics/icp-opal.c
@@ -120,14 +120,16 @@ static void icp_opal_cause_ipi(int cpu, unsigned long data)
 {
 	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();
 }

             reply	other threads:[~2017-02-07  0:35 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-07  0:35 Benjamin Herrenschmidt [this message]
2017-02-08  9:31 ` [PATCH 2/2] powerpc/powernv: Properly set "host-ipi" on IPIs Michael Ellerman
2017-02-09 13:20 ` [2/2] " Michael Ellerman

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