From: David Miller <davem@davemloft.net>
To: will.deacon@arm.com
Cc: zlim.lnx@gmail.com, ast@kernel.org, catalin.marinas@arm.com,
daniel@iogearbox.net, yang.shi@linaro.org,
netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: bpf: jit JMP_JSET_{X,K}
Date: Sat, 14 May 2016 16:12:06 -0400 (EDT) [thread overview]
Message-ID: <20160514.161206.373725987038622109.davem@davemloft.net> (raw)
In-Reply-To: <20160513100307.GC13689@arm.com>
From: Will Deacon <will.deacon@arm.com>
Date: Fri, 13 May 2016 11:03:07 +0100
> On Fri, May 13, 2016 at 10:57:18AM +0100, Will Deacon wrote:
>> On Thu, May 12, 2016 at 11:37:58PM -0700, Zi Shen Lim wrote:
>> > Original implementation commit e54bcde3d69d ("arm64: eBPF JIT compiler")
>> > had the relevant code paths, but due to an oversight always fail jiting.
>> >
>> > As a result, we had been falling back to BPF interpreter whenever a BPF
>> > program has JMP_JSET_{X,K} instructions.
>> >
>> > With this fix, we confirm that the corresponding tests in lib/test_bpf
>> > continue to pass, and also jited.
>> >
>> > ...
>> > [ 2.784553] test_bpf: #30 JSET jited:1 188 192 197 PASS
>> > [ 2.791373] test_bpf: #31 tcpdump port 22 jited:1 325 677 625 PASS
>> > [ 2.808800] test_bpf: #32 tcpdump complex jited:1 323 731 991 PASS
>> > ...
>> > [ 3.190759] test_bpf: #237 JMP_JSET_K: if (0x3 & 0x2) return 1 jited:1 110 PASS
>> > [ 3.192524] test_bpf: #238 JMP_JSET_K: if (0x3 & 0xffffffff) return 1 jited:1 98 PASS
>> > [ 3.211014] test_bpf: #249 JMP_JSET_X: if (0x3 & 0x2) return 1 jited:1 120 PASS
>> > [ 3.212973] test_bpf: #250 JMP_JSET_X: if (0x3 & 0xffffffff) return 1 jited:1 89 PASS
>> > ...
>> >
>> > Fixes: e54bcde3d69d ("arm64: eBPF JIT compiler")
>> > Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
...
> Acked-by: Will Deacon <will.deacon@arm.com>
>
> I'm assuming David will queue this?
Yep I got this, applied, thanks.
next prev parent reply other threads:[~2016-05-14 20:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-13 6:37 [PATCH] arm64: bpf: jit JMP_JSET_{X,K} Zi Shen Lim
2016-05-13 9:57 ` Will Deacon
2016-05-13 10:03 ` Will Deacon
2016-05-14 20:12 ` David Miller [this message]
2016-05-13 16:23 ` Shi, Yang
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