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    SubjectRe: [patch 36/39] PCI/MSI: Validate MSIX contiguous restriction early
    On Fri, Nov 11, 2022 at 02:55:12PM +0100, Thomas Gleixner wrote:
    > With interrupt domains the sanity check for MSI-X vector validation can be
    > done _before_ any allocation happens. The sanity check only applies to the
    > allocation functions which have an 'entries' array argument. The entries
    > array is filled by the caller with the requested MSI-X indicies. Some drivers
    > have gaps in the index space which is not supported on all architectures.
    >
    > The PCI/MSI irqdomain has a 'feature' bit to enforce this validation late
    > during the allocation phase.
    >
    > Just do it right away before doing any other work along with the other
    > sanity checks on that array.
    >
    > Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    > ---
    > drivers/pci/msi/msi.c | 11 +++++++++--
    > 1 file changed, 9 insertions(+), 2 deletions(-)

    Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

    Jason

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