[Intel-wired-lan] [next PATCH S82-V4 1/9] i40evf: Do not clear MSI-X PBA manually

Bowers, AndrewX andrewx.bowers at intel.com
Thu Nov 16 22:18:40 UTC 2017


> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On
> Behalf Of Alice Michael
> Sent: Tuesday, November 14, 2017 4:01 AM
> To: Michael, Alice <alice.michael at intel.com>; intel-wired-
> lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [next PATCH S82-V4 1/9] i40evf: Do not clear MSI-X
> PBA manually
> 
> From: Alexander Duyck <alexander.h.duyck at intel.com>
> 
> We should not be clearing the pending bit array for each vector manually.
> The documentation for the hardware states that when in MSI-X mode the
> pending bit array wil be cleared automatically. Us clearing it ourselves just
> results in multiple opportunities for us to drop an interrupt.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck at intel.com>
> ---
>  drivers/net/ethernet/intel/i40evf/i40evf_main.c | 18 +++++-------------
>  1 file changed, 5 insertions(+), 13 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers at intel.com>




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