> -----Original Message----- > From: Stephen Hemminger [mailto:step...@networkplumber.org] > Sent: Wednesday, June 28, 2017 4:22 PM > To: KY Srinivasan <k...@microsoft.com>; bhelg...@google.com > Cc: linux-...@vger.kernel.org; de...@linuxdriverproject.org; Stephen > Hemminger <sthem...@microsoft.com> > Subject: [PATCH] hv: fix msi affinity when device requests all possible CPU's > > When Intel 10G (ixgbevf) is passed to a Hyper-V guest with SR-IOV, the driver > requests affinity with all possible CPU's (0-239) even those CPU's are not > online > (and will never be). Because of this the device is unable to correctly get MSI > interrupt's setup. > > This was caused by the change in 4.12 that converted this affinity into all > possible CPU's (0-31) but then host reports an error since this is larger > than the > number of online cpu's. > > Previously, this worked (up to 4.12-rc1) because only online cpu's would be > put > in mask passed to the host. > > This patch applies only to 4.12. > The driver in linux-next needs a a different fix because of the changes to PCI > host protocol version.
The vPCI patch in linux-next has the issue fixed already. Regards, Jork _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
