4.16-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Gleixner tglx@linutronix.de
commit 8a2b7d142e7ac477d52f5f92251e59fc136d7ddd 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 the special ir_ack_apic_edge() implementation which is merily a wrapper around 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/20180604162224.555716895@linutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/iommu/amd_iommu.c | 2 +- drivers/iommu/intel_irq_remapping.c | 2 +- drivers/iommu/irq_remapping.c | 5 ----- drivers/iommu/irq_remapping.h | 2 -- 4 files changed, 2 insertions(+), 9 deletions(-)
--- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -4352,7 +4352,7 @@ static void ir_compose_msi_msg(struct ir
static struct irq_chip amd_ir_chip = { .name = "AMD-IR", - .irq_ack = ir_ack_apic_edge, + .irq_ack = apic_ack_irq, .irq_set_affinity = amd_ir_set_affinity, .irq_set_vcpu_affinity = amd_ir_set_vcpu_affinity, .irq_compose_msi_msg = ir_compose_msi_msg, --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -1223,7 +1223,7 @@ static int intel_ir_set_vcpu_affinity(st
static struct irq_chip intel_ir_chip = { .name = "INTEL-IR", - .irq_ack = ir_ack_apic_edge, + .irq_ack = apic_ack_irq, .irq_set_affinity = intel_ir_set_affinity, .irq_compose_msi_msg = intel_ir_compose_msi_msg, .irq_set_vcpu_affinity = intel_ir_set_vcpu_affinity, --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -156,11 +156,6 @@ void panic_if_irq_remap(const char *msg) panic(msg); }
-void ir_ack_apic_edge(struct irq_data *data) -{ - ack_APIC_irq(); -} - /** * irq_remapping_get_ir_irq_domain - Get the irqdomain associated with the IOMMU * device serving request @info --- a/drivers/iommu/irq_remapping.h +++ b/drivers/iommu/irq_remapping.h @@ -65,8 +65,6 @@ struct irq_remap_ops { extern struct irq_remap_ops intel_irq_remap_ops; extern struct irq_remap_ops amd_iommu_irq_ops;
-extern void ir_ack_apic_edge(struct irq_data *data); - #else /* CONFIG_IRQ_REMAP */
#define irq_remapping_enabled 0