On Wed, Apr 21, 2021 at 04:04:12PM +0300, Zidenberg, Tsahi wrote: > > > On 13/04/2021 10:27, Greg KH wrote: > > On Mon, Apr 12, 2021 at 10:46:41PM +0300, Zidenberg, Tsahi wrote: > >> The original bug that I was working on: command line parameters don't > >> appear when snooping execve using bpf on arm64. > > Has this ever worked? If not, it's not really a regression that needs > > to be fixed, just use a newer kernel version, right? > It's not so much a regression between old and new kernels, as it is > a regression when changing architectures. The same API works on x86, > but not on arm64 (in x86 - you can access userspace with a kernelspace > access). What API are you talking about here? Different CPU architectures support different things. Some do not support ebpf at all, is that a regression? No. > Multiple Linux distributions support both x86 and arm64, and some of > these choose to keep with 5.4 LTS Linux kernel. I think these > distributions should expect the same experience across architectures. Since when has that ever been a requirement of Linux? That is not a requirement of the stable kernel trees either, please see our very simple set of rules. still confused as to what you are trying to do here, greg k-h
