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Message-ID: <mj+md-20071108.134746.10051.albireo@ucw.cz> Date: Thu, 8 Nov 2007 14:50:42 +0100 From: Martin Mares <mj@....cz> To: Arjan van de Ven <arjan@...radead.org> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Robert Hancock <hancockr@...w.ca>, Greg KH <greg@...ah.com>, Jesse Barnes <jbarnes@...tuousgeek.org>, akpm@...ux-foundation.org, ak@...e.de, rajesh.shah@...el.com, linux-kernel <linux-kernel@...r.kernel.org> Subject: Re: pci-disable-decode-of-io-memory-during-bar-sizing.patch Hello! > > Maybe we should do all bus scanning with conf1 and then try if > > MMCONFIG returns the same values? > > that is already in the code today but not nearly enough; there's a ton > of cases where it's "touch mmconfig and the box is dead"... Argh. However I still do not think it is an acceptable reason for breaking all userspace access to the extended config space. At the very least, there should be a sysfs toggle to enable MMCONFIG if root really wishes that (maybe for a particular device, as the drivers would do). Have a nice fortnight -- Martin `MJ' Mares <mj@....cz> http://mj.ucw.cz/ Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth Do not believe in miracles -- rely on them. - 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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