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    SubjectRe: [PATCH 0/3] msi abstractions and support for altix
    On Thu, Dec 22, 2005 at 02:38:24PM -0600, Mark Maule wrote:
    > (from which MSI FIRST_DEVICE_VECTOR/LAST_DEVICE_VECTOR are derived) are not
    > constants. The are now global variables (see change to asm-ia64/hw_irq.h)
    > to allow the platform to override them. Altix uses a reduced range of
    > vectors for devices, and this change was necessary to make assign_irq_vector()
    > to work on altix.

    To be honest, I think this is just adding a third layer of paper over
    the crack in the wall. The original code assumed x86; the ia64 port
    added enough emulation to make it look like x86 and now altix fixes a
    couple of assumptions. I say: bleh.

    What we actually need is an interface provided by the architecture that
    allocates a new irq. I have a hankering to implement MSI on PA-RISC but
    haven't found the time ...
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