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Date: Fri, 6 Jun 2014 10:02:42 +0100 (BST) From: "Maciej W. Rozycki" <macro@...ux-mips.org> To: "H. Peter Anvin" <hpa@...or.com> cc: Josh Triplett <josh@...htriplett.org>, Jann Horn <jann@...jh.net>, Arnd Bergmann <arnd@...db.de>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, linux-api@...r.kernel.org Subject: Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports On Wed, 4 Jun 2014, H. Peter Anvin wrote: > > Also IIRC PCI-PCI bridges only forward port I/O space accesses > > within the low 64kB. > > Not true. It must have been an implementation-specific constraint then (e.g. DECchip 21050), it's been a while since I looked into it. Thanks for straightening me out. Maciej -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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