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@xxxxxxxxxxxxx> > --- > drivers/pci/msi/msi.c | 11 +++++++++-- > 1 file changed, 9 insertions(+), 2 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
