4.17-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Gleixner tglx@linutronix.de
commit 2b04e46d8d0b9b7ac08ded672e3eab823f01d77a upstream.
To address the EBUSY fail of interrupt affinity settings in case that the previous setting has not been cleaned up yet, use the new apic_ack_irq() function instead of directly invoking ack_APIC_irq().
Preparatory change for the real fix
Fixes: dccfe3147b42 ("x86/vector: Simplify vector move cleanup") Signed-off-by: Thomas Gleixner tglx@linutronix.de Tested-by: Song Liu songliubraving@fb.com Cc: Joerg Roedel jroedel@suse.de Cc: Peter Zijlstra peterz@infradead.org Cc: Song Liu liu.song.a23@gmail.com Cc: Dmitry Safonov 0x7f454c46@gmail.com Cc: stable@vger.kernel.org Cc: Mike Travis mike.travis@hpe.com Cc: Borislav Petkov bp@alien8.de Cc: Tariq Toukan tariqt@mellanox.com Link: https://lkml.kernel.org/r/20180604162224.639011135@linutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/kernel/apic/io_apic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1851,7 +1851,7 @@ static void ioapic_ir_ack_level(struct i * intr-remapping table entry. Hence for the io-apic * EOI we use the pin number. */ - ack_APIC_irq(); + apic_ack_irq(irq_data); eoi_ioapic_pin(data->entry.vector, data); }