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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
os
linux
powerpc/xics/opal: Fix processor numbers in OPAL ICP
When using the OPAL ICP backend we incorrectly pass Linux CPU numbers
rather than HW CPU numbers to OPAL.
Fixes: d74361881f0d ("powerpc/xics: Add ICP OPAL backend")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
authored by
Benjamin Herrenschmidt
and committed by
Michael Ellerman
f8e33475
d81d8258
+7
-5
arch/powerpc/sysdev/xics/icp-opal.c
+7
-5
arch/powerpc/sysdev/xics/icp-opal.c
···
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static void icp_opal_teardown_cpu(void)
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{
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-
int cpu = smp_processor_id();
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+
int hw_cpu = hard_smp_processor_id();
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/* Clear any pending IPI */
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-
opal_int_set_mfrr(cpu, 0xff);
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+
opal_int_set_mfrr(hw_cpu, 0xff);
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}
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static void icp_opal_flush_ipi(void)
···
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static void icp_opal_cause_ipi(int cpu, unsigned long data)
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{
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opal_int_set_mfrr(cpu, IPI_PRIORITY);
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int hw_cpu = get_hard_smp_processor_id(cpu);
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+
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opal_int_set_mfrr(hw_cpu, IPI_PRIORITY);
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}
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static irqreturn_t icp_opal_ipi_action(int irq, void *dev_id)
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{
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-
int cpu = smp_processor_id();
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int hw_cpu = hard_smp_processor_id();
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opal_int_set_mfrr(cpu, 0xff);
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opal_int_set_mfrr(hw_cpu, 0xff);
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return smp_ipi_demux();
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}