diff options
| -rw-r--r-- | include/linux/msi.h | 2 | ||||
| -rw-r--r-- | kernel/irq/msi.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index 944979763825..b10093c4d00e 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -554,6 +554,8 @@ enum { MSI_FLAG_MSIX_CONTIGUOUS = (1 << 19), /* PCI/MSI-X vectors can be dynamically allocated/freed post MSI-X enable */ MSI_FLAG_PCI_MSIX_ALLOC_DYN = (1 << 20), + /* PCI MSIs cannot be steered separately to CPU cores */ + MSI_FLAG_NO_AFFINITY = (1 << 21), }; /** diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index 5fa0547ece0c..ca6e2ae6d6fc 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -832,7 +832,7 @@ static void msi_domain_update_chip_ops(struct msi_domain_info *info) struct irq_chip *chip = info->chip; BUG_ON(!chip || !chip->irq_mask || !chip->irq_unmask); - if (!chip->irq_set_affinity) + if (!chip->irq_set_affinity && !(info->flags & MSI_FLAG_NO_AFFINITY)) chip->irq_set_affinity = msi_domain_set_affinity; } |