Date: Thu, 12 Jan 2017 03:42:52 +0530 From: Shubham Bansal <illusionist.neo@...il.com> To: Kees Cook <keescook@...omium.org> Cc: kernel-hardening@...ts.openwall.com, "Reshetova, Elena" <elena.reshetova@...el.com>, Daniel Borkmann <daniel@...earbox.net> Subject: Re: Looking for something to WORK ON Hi Kees, I would have already started working on it since we last talked but before that I wanted to check if anybody else is also not working on the same thing. Otherwise it would be waste of time. Anyways. I will start working on it. No point in postponing in. Thanks, Shubham On Jan 12, 2017 2:59 AM, "Kees Cook" <keescook@...omium.org> wrote: > On Wed, Jan 11, 2017 at 4:46 AM, Shubham Bansal > <illusionist.neo@...il.com> wrote: > > > > On Wed, Jul 13, 2016 at 2:32 PM, Daniel Borkmann <daniel@...earbox.net> > > wrote: > >> Feel free to check out slides etc that are mostly located here: > >> > >> https://github.com/iovisor/bpf-docs > >> > >> Also, Documentation/networking/filter.txt in the kernel tree provides > some > >> info as a starting point, an example of eBPF JIT can be found here > >> arch/x86/net/ > >> in kernel tree. > >> > >> To give you a basic overview what JITs are still classic BPF (cBPF) > ones: > >> > >> $ git grep -n "select HAVE_CBPF_JIT" > >> arch/arm/Kconfig:44: select HAVE_CBPF_JIT > >> arch/mips/Kconfig:18: select HAVE_CBPF_JIT if !CPU_MICROMIPS > >> arch/powerpc/Kconfig:131: select HAVE_CBPF_JIT if CPU_BIG_ENDIAN > >> arch/sparc/Kconfig:35: select HAVE_CBPF_JIT > >> > >> ... and which are eBPF (ppc64 one should get merged next window I > >> believe): > >> > >> $ git grep -n "select HAVE_EBPF_JIT" > >> arch/arm64/Kconfig:64: select HAVE_EBPF_JIT > >> arch/s390/Kconfig:131: select HAVE_EBPF_JIT if PACK_STACK && > >> HAVE_MARCH_Z196_FEATURES > >> arch/x86/Kconfig:94: select HAVE_EBPF_JIT if > X86_64 > >> > >> Cheers, > >> Daniel > > > > Hi Daniel, > > > > I have read about the EBPF and BFP. I wanted to start contributing. Do > you > > have any place for me to start with ? > > I mailed you regarding the same few months ago but didn't get the reply. > > Daniel may have more ideas, but I would say taking a CBPF jit and > converting it to an EBPF jit would be the best thing to start with. > > Doing ARM first might be easiest to tackle? > > -Kees > > -- > Kees Cook > Nexus Security > Content of type "text/html" skipped
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