On Mon, Jun 09, 2008 at 06:36:29PM +0900, FUJITA Tomonori wrote: > On Mon, 09 Jun 2008 10:17:11 +0200 > Andi Kleen <andi@xxxxxxxxxxxxxx> wrote: > > > "Grant Grundler" <grundler@xxxxxxxxxx> writes: > > > > > > The historical DMA mapping "failure mode" is a kernel panic. Resizing or > > > > Hasn't been for a long time, except in some extreme cases. All drivers > > are expected to check return values for a long time now. > > Agreed, but I think that lots of network drivers still assume that DMA > mapping always succeeds (they don't check return values). Those should be just fixed. You're right. I reviewed some new drivers and was surprised that they even got that wrong (code reviewers were supposed to flag this in the first place) I would guess in practice the main offender would be tg3.c/bnx2.c. On the other hand Intel IOMMU systems should usually use e1000e which checks. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
