Re: Multiple MSI, take 3

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



David Miller <davem@xxxxxxxxxxxxx> writes:

> The x86 system designers decided to implement multi-MSI in an
> inconvenient way, it is not a "crap hardware design", merely
> some (unfortunately common) implementations of it happen to be.

To be clear I was referring to the PCI spec that describes multi-MSI
as a crap hardware design.

At the very least you are left with the problem of allocating multiple
contiguous destinations.  Which has the potential to create
fragmentation on all supported platforms.

Optional mask bits are also nasty.

My honest opinion is that the should have deprecated multi-msi after the
introduction of the msi-x specification.

Eric
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux