On Tue, 2012-07-31 at 13:41 +0200, Alexander Gordeev wrote: > Currently multiple MSI mode is limited to a single vector per device (at > least on x86 and PPC). This series breathes life into pci_enable_msi_block() > and makes it possible to set interrupt affinity for multiple IRQs, similarly > to MSI-X. Yet, only for x86 and only when IOMMUs are present. > > Although IRQ and PCI subsystems are modified, the current behaviour left > intact. The drivers could just start using multiple MSIs just by following > the existing documentation.
So while I am ok with the proposed changes, I will hold off acking until I see the corresponding driver changes (using pci_enable_msi_block() etc) that take advantage of these changes ;) Did you have a specific device in mind and are the driver changes coming? thanks, suresh > > The patches are adapted to Ingo's -tip repository, x86/apic branch. > > Alexander Gordeev (3): > x86, MSI: Support multiple MSIs in presense of IRQ remapping > x86, MSI: Allocate as many multiple IRQs as requested > x86, MSI: Minor readability fixes > > arch/x86/kernel/apic/io_apic.c | 170 > +++++++++++++++++++++++++++++++++++++--- > drivers/pci/msi.c | 10 ++- > include/linux/irq.h | 6 ++ > include/linux/msi.h | 1 + > kernel/irq/chip.c | 30 +++++-- > kernel/irq/irqdesc.c | 31 +++++++ > 6 files changed, 226 insertions(+), 22 deletions(-) > > -- > 1.7.7.6 > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
