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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>, bpf <bpf@vger.kernel.org>,
	Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>
Subject: Re: [PATCH v2 0/4] s390/bpf: implement BPF_PROBE_MEM
Date: Tue, 21 Jul 2020 11:01:22 -0700	[thread overview]
Message-ID: <CAADnVQ+fbfAEarcjJCeF=7ssBG2rpxzLZkVT0ZW7k6HWcN1uBg@mail.gmail.com> (raw)
In-Reply-To: <20200715233301.933201-1-iii@linux.ibm.com>

On Wed, Jul 15, 2020 at 4:38 PM Ilya Leoshkevich <iii@linux.ibm.com> wrote:
>
> This patch series implements BPF_PROBE_MEM opcode, which is used in BPF
> programs that walk chains of kernel pointers. It consists of two parts:
> patches 1 and 2 enhance s390 exception table infrastructure, patches 3
> and 4 contains the actual implementation and the test.
>
> We would like to take this series via s390 tree, because it contains
> dependent s390 extable and bpf jit changes. However, it would be great
> if someone knowledgeable could review patches 3 and 4.
>
> v1 -> v2:
>
> - Add `jit->excnt = 0` in order to fix WARNINGs and fallbacks to the
>   interpreter when running extra_pass. This wasn't easy to spot on
>   bpf-next, since tests passed anyway. However, on v5.8-rc5 this led
>   to panics.

Applied. Thanks

  parent reply	other threads:[~2020-07-21 18:01 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-15 23:32 [PATCH v2 0/4] s390/bpf: implement BPF_PROBE_MEM Ilya Leoshkevich
2020-07-15 23:32 ` [PATCH v2 1/4] s390/kernel: unify EX_TABLE* implementations Ilya Leoshkevich
2020-07-15 23:32 ` [PATCH v2 2/4] s390/kernel: expand the exception table logic to allow new handling options Ilya Leoshkevich
2020-07-15 23:33 ` [PATCH v2 3/4] s390/bpf: implement BPF_PROBE_MEM Ilya Leoshkevich
2020-07-16 11:09   ` Heiko Carstens
2020-07-15 23:33 ` [PATCH v2 4/4] selftests/bpf: add exception handling test Ilya Leoshkevich
2020-07-21 18:01 ` Alexei Starovoitov [this message]
2020-07-21 20:16   ` [PATCH v2 0/4] s390/bpf: implement BPF_PROBE_MEM Heiko Carstens
2020-07-21 20:23     ` Alexei Starovoitov

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