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Commit 69399873 authored by Avinash Dayanand's avatar Avinash Dayanand Committed by Jeff Kirsher
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i40e: Fix kdump failure 



kdump fails in the system when used in conjunction with Ethernet driver
X722/X710. This is mainly because when we are resource constrained i.e.
when we have just one online_cpus, we are enabling VMDq and iWARP. It
doesn't make sense to enable them with just one CPU and starve kdump
for lack of IRQs.

So don't enable VMDq or iWARP when we just have a single CPU.

Signed-off-by: default avatarAvinash Dayanand <avinash.dayanand@intel.com>
Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 5056716c

drivers/net/ethernet/intel/i40e/i40e_main.c

+2 −2
Original line number Diff line number Diff line
@@ -11069,13 +11069,13 @@ static int i40e_sw_init(struct i40e_pf *pf) 
	    pf->hw.aq.fw_maj_ver >= 6)

		pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;



	if (pf->hw.func_caps.vmdq) {

	if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {

		pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;

		pf->flags |= I40E_FLAG_VMDQ_ENABLED;

		pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);

	}



	if (pf->hw.func_caps.iwarp) {

	if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {

		pf->flags |= I40E_FLAG_IWARP_ENABLED;

		/* IWARP needs one extra vector for CQP just like MISC.*/

		pf->num_iwarp_msix = (int)num_online_cpus() + 1;