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From: David Miller <davem@davemloft.net>
To: ebiederm@xmission.com
Cc: jeff@garzik.org, benh@kernel.crashing.org, greg@kroah.com,
tony.luck@intel.com, grundler@parisc-linux.org, mingo@elte.hu,
linux-kernel@vger.kernel.org, kyle@parisc-linux.org,
linuxppc-dev@ozlabs.org, brice@myri.com, shaohua.li@intel.com,
linux-pci@atrey.karlin.mff.cuni.cz
Subject: Re: [PATCH 0/6] MSI portability cleanups
Date: Sun, 28 Jan 2007 15:44:53 -0800 (PST) [thread overview]
Message-ID: <20070128.154453.112622887.davem@davemloft.net> (raw)
In-Reply-To: <m1bqkiq25v.fsf@ebiederm.dsl.xmission.com>
From: ebiederm@xmission.com (Eric W. Biederman)
Date: Sun, 28 Jan 2007 14:20:12 -0700
> I see people pushing ridiculous interfaces like the RTAS hypervisor
> interface at me, and saying we must support running firmware drivers
> in the msi code.
This is not what's going on.
The hypervisor does the PCI config space programming on the
device to setup the MSI so that it can be done in a controlled
manner and such that the device cannot ever be configured by
one domain to shoot MSI packets over at devices which belong
to another domain.
It's that simple.
That's absolutely reasonable, and is I believe what you'll see the
sparc64 hypervisor(s) all needing as well.
next prev parent reply other threads:[~2007-01-28 23:44 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1169714047.65693.647693675533.qpush@cradle>
2007-01-28 19:40 ` Eric W. Biederman
2007-01-28 19:42 ` [PATCH 1/6] msi: Kill msi_lookup_irq Eric W. Biederman
2007-01-28 19:44 ` [PATCH 2/6] msi: Remove msi_lock Eric W. Biederman
2007-01-28 19:45 ` [PATCH 3/6] msi: Fix msi_remove_pci_irq_vectors Eric W. Biederman
2007-01-28 19:47 ` [PATCH 4/6] msi: Remove attach_msi_entry Eric W. Biederman
2007-01-28 19:52 ` [PATCH 5/6] msi: Kill the msi_desc array Eric W. Biederman
2007-01-28 19:56 ` [PATCH 6/6] msi: Make MSI useable more architectures Eric W. Biederman
2007-01-28 22:01 ` [PATCH 1/6] msi: Kill msi_lookup_irq Paul Mackerras
2007-01-28 22:18 ` Eric W. Biederman
2007-01-28 20:23 ` [PATCH 0/6] MSI portability cleanups Benjamin Herrenschmidt
2007-01-28 20:47 ` Jeff Garzik
2007-01-28 21:20 ` Eric W. Biederman
2007-01-28 21:26 ` Ingo Molnar
2007-01-28 22:09 ` Benjamin Herrenschmidt
2007-01-28 23:26 ` Eric W. Biederman
2007-01-28 23:37 ` David Miller
2007-01-29 5:18 ` Eric W. Biederman
2007-01-29 5:25 ` David Miller
2007-01-29 5:58 ` Eric W. Biederman
2007-01-29 6:05 ` Benjamin Herrenschmidt
2007-01-29 8:28 ` Eric W. Biederman
2007-01-29 9:03 ` Eric W. Biederman
2007-01-29 10:11 ` Michael Ellerman
2007-01-29 20:32 ` Benjamin Herrenschmidt
2007-01-29 23:29 ` Paul Mackerras
2007-01-29 23:40 ` Benjamin Herrenschmidt
2007-01-29 20:22 ` Benjamin Herrenschmidt
2007-01-29 23:05 ` Paul Mackerras
2007-01-30 19:32 ` Segher Boessenkool
2007-01-29 1:33 ` Benjamin Herrenschmidt
2007-02-01 4:29 ` Greg KH
2007-01-28 23:44 ` David Miller [this message]
2007-01-28 22:11 ` Eric W. Biederman
2007-01-28 23:42 ` David Miller
2007-01-28 21:34 ` Eric W. Biederman
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