> Subject: Re: [PATCH] IB/{hfi1,qib}: Add limit test for RC/UC send via loopback > > What stable kernel(s) is this backport for? > > thanks, > > greg k-h The original patch has already been backported to 4.20. The kernels that require the ported patch are older ones: 4.19.x, 4.14.x, and 4.9.x. Mike