From: Alexei Starovoitov <ast@plumgrid.com>
To: Daniel Borkmann <daniel@iogearbox.net>, davem@davemloft.net
Cc: holzheu@linux.vnet.ibm.com, netdev@vger.kernel.org
Subject: Re: [PATCH net-next 2/4] bpf: provide helper that indicates eBPF was migrated
Date: Thu, 30 Jul 2015 10:15:08 -0700 [thread overview]
Message-ID: <55BA5B9C.6010406@plumgrid.com> (raw)
In-Reply-To: <11e0f83fcc330f6f7bd0d427dc4c81b2a699b498.1438250937.git.daniel@iogearbox.net>
On 7/30/15 3:42 AM, Daniel Borkmann wrote:
> During recent discussions we had with Michael, we found that it would
> be useful to have an indicator that tells the JIT that an eBPF program
> had been migrated from classic instructions into eBPF instructions, as
> only in that case A and X need to be cleared in the prologue. Such eBPF
> programs do not set a particular type, but all have BPF_PROG_TYPE_UNSPEC.
> Thus, introduce a small helper for cde66c2d88da ("s390/bpf: Only clear
> A and X for converted BPF programs") and possibly others in future.
>
> Signed-off-by: Daniel Borkmann<daniel@iogearbox.net>
> Cc: Michael Holzheu<holzheu@linux.vnet.ibm.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
next prev parent reply other threads:[~2015-07-30 17:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-30 10:42 [PATCH net-next 0/4] Minor BPF updates Daniel Borkmann
2015-07-30 10:42 ` [PATCH net-next 1/4] test_bpf: assign type to native eBPF test cases Daniel Borkmann
2015-07-30 17:14 ` Alexei Starovoitov
2015-07-30 10:42 ` [PATCH net-next 2/4] bpf: provide helper that indicates eBPF was migrated Daniel Borkmann
2015-07-30 17:15 ` Alexei Starovoitov [this message]
2015-07-30 10:42 ` [PATCH net-next 3/4] bpf, x86/sparc: show actual number of passes in bpf_jit_dump Daniel Borkmann
2015-07-30 17:15 ` Alexei Starovoitov
2015-07-30 10:42 ` [PATCH net-next 4/4] bpf: also show process name/pid " Daniel Borkmann
2015-07-30 17:18 ` Alexei Starovoitov
2015-07-30 18:13 ` [PATCH net-next 0/4] Minor BPF updates David Miller
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