Messages in this thread | | | Date | Thu, 29 Mar 2007 13:25:34 -0400 | From | Chuck Ebbert <> | Subject | Re: [PATCH 2.6.21-rc5] MSI: read-flush MSI-X table (rev 2) |
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Mitch Williams wrote: > This patch fixes a kernel bug which is triggered when using the > irqbalance daemon with MSI-X hardware. > > Because both MSI-X interrupt messages and MSI-X table writes are posted, > it's possible for them to cross while in-flight. This results in > interrupts being received long after the kernel thinks they're disabled, > and in interrupts being sent to stale vectors after rebalancing. > > This patch performs a read flush after writes to the MSI-X table for > mask/unmask and rebalancing operations. > > This patch has been validated with (unreleased) network hardware which > uses MSI-X. > > Revised with input from Eric Biederman. > > Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> >
Are you going to post one for 2.6.20 as well? Some people might be interested...
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