Date: Wed, 15 Mar 2017 14:55:12 -0700 (PDT) From: David Miller <davem@...emloft.net> To: illusionist.neo@...il.com Cc: keescook@...omium.org, daniel@...earbox.net, mgherzan@...il.com, netdev@...r.kernel.org, kernel-hardening@...ts.openwall.com, linux-arm-kernel@...ts.infradead.org Subject: Re: arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit From: Shubham Bansal <illusionist.neo@...il.com> Date: Wed, 15 Mar 2017 17:43:44 +0530 >> You can't truncate, but you'll have to build 64-bit ops using 32-bit registers. > > A small example would help a lot. You can simply perform 64-bit operations in C code and see what gcc outputs for that code on this 32-bit target.
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