From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Matthew Wilcox <matthew@wil.cx>,
Greg Kroah-Hartman <greg@kroah.com>, Ingo Molnar <mingo@elte.hu>,
Russell King <rmk-pci@arm.linux.org.uk>,
linuxppc-dev@ozlabs.org, Thomas Gleixner <tglx@linutronix.de>,
linux-pci@atrey.karlin.mff.cuni.cz,
"David S.Miller" <davem@davemloft.net>
Subject: Re: [RFC/PATCH 4/7] Powerpc MSI implementation
Date: Wed, 08 Nov 2006 14:02:45 +1100 [thread overview]
Message-ID: <1162954965.28571.644.camel@localhost.localdomain> (raw)
In-Reply-To: <m1wt6664l8.fsf@ebiederm.dsl.xmission.com>
> I'm still having a hard time wrapping my head around the sanity of not letting
> the kernel touch the hardware in the presence of a hypervisor. How do you cope
> with hardware that follows a specification the hypervisor is not aware of?
We don't cope :-)
> This seems to be a violation of the principle that the driver knows the hardware
> better than some generic layer.
Well, we got at least the HV folks to change their interfaces so we
could explicitely tell them wether we want MSI or MSI-X ... in the
initial definition of that stuff, we couldn't (the HV did what it
wanted) and we didn't even know what it did (we still don't, but at
least we can now request specifically MSI or MSI-X).
Ben.
next prev parent reply other threads:[~2006-11-08 3:03 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-07 7:21 [RFC/PATCH 0/7] Powerpc MSI Implementation Michael Ellerman
2006-11-07 7:21 ` [RFC/PATCH 1/7] Add #defines for Hypertransport MSI fields Michael Ellerman
2006-11-07 8:01 ` Segher Boessenkool
2006-11-07 7:21 ` [RFC/PATCH 2/7] Make some MSI-X #defines generic Michael Ellerman
2006-11-13 18:31 ` patch pci-make-some-msi-x-defines-generic.patch added to gregkh-2.6 tree gregkh
2006-11-07 7:21 ` [RFC/PATCH 3/7] Rip out the existing powerpc msi stubs Michael Ellerman
2006-11-07 7:21 ` [RFC/PATCH 4/7] Powerpc MSI implementation Michael Ellerman
2006-11-07 20:07 ` Matthew Wilcox
2006-11-07 20:14 ` Russell King
2006-11-07 20:40 ` Benjamin Herrenschmidt
2006-11-07 20:44 ` Matthew Wilcox
2006-11-07 20:48 ` Russell King
2006-11-07 21:02 ` Matthew Wilcox
2006-11-07 22:25 ` Russell King
2006-11-07 22:29 ` Benjamin Herrenschmidt
2006-11-07 23:11 ` Eric W. Biederman
2006-11-08 0:15 ` Benjamin Herrenschmidt
2006-11-08 1:33 ` Eric W. Biederman
2006-11-08 2:08 ` Benjamin Herrenschmidt
2006-11-08 2:43 ` Eric W. Biederman
2006-11-08 3:02 ` Benjamin Herrenschmidt [this message]
2006-11-07 20:39 ` Benjamin Herrenschmidt
2006-11-07 7:21 ` [RFC/PATCH 5/7] RTAS " Michael Ellerman
2006-11-08 20:16 ` Jake Moilanen
2006-11-08 23:35 ` Michael Ellerman
2006-11-07 7:21 ` [RFC/PATCH 6/7] MPIC MSI backend Michael Ellerman
2006-11-07 8:27 ` Segher Boessenkool
2006-11-07 8:42 ` Benjamin Herrenschmidt
2006-11-07 9:04 ` Segher Boessenkool
2006-11-07 9:16 ` Benjamin Herrenschmidt
2006-11-07 11:12 ` Segher Boessenkool
2006-11-07 7:21 ` [RFC/PATCH 7/7] Enable MSI on Powerpc Michael Ellerman
2006-11-07 7:41 ` [RFC/PATCH 0/7] Powerpc MSI Implementation Benjamin Herrenschmidt
2006-11-07 8:02 ` Greg KH
2006-11-08 5:18 ` Michael Ellerman
2006-11-08 10:26 ` Eric W. Biederman
2006-11-08 23:33 ` Michael Ellerman
2006-11-09 7:36 ` Segher Boessenkool
2006-11-13 6:05 ` Michael Ellerman
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