• Jiang Liu's avatar
    x86/irq: Use hierarchical irqdomain to manage CPU interrupt vectors · b5dc8e6c
    Jiang Liu authored
    Abstract CPU local APIC as an interrupt controller and create an
    irqdomain for it to manage CPU interrupt vectors. It's the base to
    enable hierarchical irqdomains on x86 systems. 
    
    The final irqdomain hierarchy will look like this:
    
    IOAPIC domain    ----|
    MSI/MSI-x domain ----> [Interrupt Remapping domain] -> CPU vector domain
    HPET_IRQ domain  ----|                                         ^
                                                                   |
    DMAR domain      ----------------------------------------------|
    HT_IRQ domain    ----------------------------------------------|
    Signed-off-by: default avatarJiang Liu <jiang.liu@linux.intel.com>
    Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
    Cc: David Cohen <david.a.cohen@linux.intel.com>
    Cc: Sander Eikelenboom <linux@eikelenboom.it>
    Cc: David Vrabel <david.vrabel@citrix.com>
    Cc: Tony Luck <tony.luck@intel.com>
    Cc: Joerg Roedel <joro@8bytes.org>
    Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Cc: Prarit Bhargava <prarit@redhat.com>
    Cc: Bjorn Helgaas <bhelgaas@google.com>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
    Cc: Randy Dunlap <rdunlap@infradead.org>
    Cc: Yinghai Lu <yinghai@kernel.org>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Dimitri Sivanich <sivanich@sgi.com>
    Cc: Grant Likely <grant.likely@linaro.org>
    Link: http://lkml.kernel.org/r/1428905519-23704-3-git-send-email-jiang.liu@linux.intel.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    b5dc8e6c
hw_irq.h 6.97 KB