* Matthew Wilcox <matthew@xxxxxx> wrote: > Add support for allocating an aligned block of interrupt vectors. > Allow interrupts to have up to 32 subchannels. Implement the > arch_setup_msi_irqs() and arch_teardown_msi_irqs() interfaces. > > Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> > --- > arch/x86/kernel/io_apic_64.c | 221 +++++++++++++++++++++++++++++++++++------ > arch/x86/kernel/irq_64.c | 2 +- > include/asm-x86/irq_64.h | 2 + > 3 files changed, 191 insertions(+), 34 deletions(-) hm, please implement this symmetrically on 64-bit and 32-bit as well. That will need more IRQ infrastructure changes but that should be OK as it will reduce the gap between the 32-bit and 64-bit side instead of widening it. A good starting point would be to unify/generalize the IRQ vector allocators. (and that would get most of what you need for multi-vector MSI) Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
