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Hollis Blanchard wrote: > On Sun, 2007-02-25 at 10:58 +0200, Avi Kivity wrote: > >> I'm changing the kvm userspace interface to be more friendly to other >> archs. One issue is the PIO port size. x86 uses 16 bits to hold the >> port size (64K ports). Is that an issue for other archs? >> >> I guess I could change it to __u32, but it's better to know what various >> architectures actually require. >> > > PowerPC doesn't have any such concept; access to ISA PIO is done by > having the bridge translate a particular range of MMIO accesses as PIO. > I'm no expert, but I don't know of any mainstream processor other than > x86 that supports PIO. > > I think ia64 does, but it's probably exactly the same as x86. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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