From: Daniel Borkmann <daniel@iogearbox•net>
To: David Miller <davem@davemloft•net>
Cc: ast@fb•com, holzheu@linux•vnet.ibm.com,
naveen.n.rao@linux•vnet.ibm.com, jakub.kicinski@netronome•com,
netdev@vger•kernel.org
Subject: Re: [PATCH net-next 1/9] bpf: add BPF_J{LT,LE,SLT,SLE} instructions
Date: Wed, 09 Aug 2017 19:03:03 +0200 [thread overview]
Message-ID: <598B4047.2090701@iogearbox.net> (raw)
In-Reply-To: <598B3FCA.7060904@iogearbox.net>
On 08/09/2017 07:00 PM, Daniel Borkmann wrote:
> On 08/09/2017 06:55 PM, David Miller wrote:
>> From: Daniel Borkmann <daniel@iogearbox•net>
>> Date: Wed, 9 Aug 2017 12:23:53 +0200
>>
>>> [1] https://github.com/borkmann/llvm/tree/bpf-insns
>>
>> How is this "backwards compatible"?
>>
>> If someone takes a new LLVM and tries to load those programs
>> into an older kernel they will be rejected.
>>
>> There appears to be no effort to make things work cleanly in
>> that situation at all.
>
> No, that was just the patch I used for LLVM to enable the
> insns, so not the final one that will be submitted there
> officially where we have a switch to enable/disable this
> functionality.
(In other words the one I used for doing the measurements.)
next prev parent reply other threads:[~2017-08-09 17:03 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-09 10:23 [PATCH net-next 0/9] Add BPF_J{LT,LE,SLT,SLE} instructions Daniel Borkmann
2017-08-09 10:23 ` [PATCH net-next 1/9] bpf: add " Daniel Borkmann
2017-08-09 16:55 ` David Miller
2017-08-09 17:00 ` Daniel Borkmann
2017-08-09 17:03 ` Daniel Borkmann [this message]
2017-08-09 18:01 ` David Miller
2017-08-09 20:32 ` Daniel Borkmann
2017-08-09 21:26 ` David Miller
2017-08-09 21:29 ` Daniel Borkmann
2017-08-09 10:23 ` [PATCH net-next 2/9] bpf, x86: implement jiting of BPF_J{LT,LE,SLT,SLE} Daniel Borkmann
2017-08-09 10:23 ` [PATCH net-next 3/9] bpf, arm64: " Daniel Borkmann
2017-08-09 10:23 ` [PATCH net-next 4/9] bpf, sparc64: " Daniel Borkmann
2017-08-09 10:23 ` [PATCH net-next 5/9] bpf, s390x: " Daniel Borkmann
2017-08-09 10:23 ` [PATCH net-next 6/9] bpf, ppc64: " Daniel Borkmann
2017-08-09 10:23 ` [PATCH net-next 7/9] bpf, nfp: implement jiting of BPF_J{LT,LE} Daniel Borkmann
2017-08-09 10:24 ` [PATCH net-next 8/9] bpf: enable BPF_J{LT,LE,SLT,SLE} opcodes in verifier Daniel Borkmann
2017-08-09 10:24 ` [PATCH net-next 9/9] bpf: add test cases for new BPF_J{LT,LE,SLT,SLE} instructions Daniel Borkmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=598B4047.2090701@iogearbox.net \
--to=daniel@iogearbox$(echo .)net \
--cc=ast@fb$(echo .)com \
--cc=davem@davemloft$(echo .)net \
--cc=holzheu@linux$(echo .)vnet.ibm.com \
--cc=jakub.kicinski@netronome$(echo .)com \
--cc=naveen.n.rao@linux$(echo .)vnet.ibm.com \
--cc=netdev@vger$(echo .)kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox