linux-kernel - Re: [PATCH] PCI: remove pcibios_scan_all

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Message-ID: <20090623014322.GA6729@sequoia.sous-sol.org>
Date:	Mon, 22 Jun 2009 18:43:22 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Matthew Wilcox <matthew@....cx>
Cc:	Alex Chiang <achiang@...com>, jbarnes@...tuousgeek.org,
	linux-arch@...r.kernel.org, Kyle McMartin <kyle@...artin.ca>,
	Tony Luck <tony.luck@...el.com>,
	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Jeff Dike <jdike@...toit.com>, linux-kernel@...r.kernel.org,
	Ralf Baechle <ralf@...ux-mips.org>,
	David Howells <dhowells@...hat.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Ingo Molnar <mingo@...hat.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] PCI: remove pcibios_scan_all_fns()

* Matthew Wilcox (matthew@....cx) wrote:
> I'd like to know what the KVM / Xen / ... people think about this.
> I don't know if they rely on function 5 being able to show up out of
> the blue.

KVM does not rely on this.  Typically a multi-function device's BDF gets
remapped between host and guest (usually becoming a single function,
function 0).

thanks,
-chris
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