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powerpc/powernv: Properly set "host-ipi" on IPIs

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[ Upstream commit f83e6862047e1e371bdc5d512dd6cabe8a3965b8 ]

Otherwise KVM will fail to pass them through to the host

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benjamin Herrenschmidt 2017-05-23 21:53:46 -04:00 committed by Greg Kroah-Hartman
parent 47a5aabc34
commit c419fe260b
1 changed files with 4 additions and 2 deletions
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6
arch/powerpc/sysdev/xics/icp-opal.c
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@ -130,14 +130,16 @@ 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();
}