Re: [PATCH] arm: Enlarge IO_SPACE_LIMIT needed for some SoC

From: Matthew Wilcox
Date: Mon May 10 2021 - 22:25:38 EST

On Tue, May 11, 2021 at 04:16:54AM +0200, Ansuel Smith wrote:
> Ipq8064 SoC requires larger IO_SPACE_LIMIT on second and third pci port.

Do you really? I mean, yes, theoretically, I understand it, the
hardware supports 64kB of I/O port space per root port. But I/O
port space is rather deprecated these days. My laptop has precisely
two devices with I/O ports, one with 64 bytes and the other with 32
bytes. Would you really suffer by allocating 16kB of I/O port
space to each root port?