From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Daniel Borkmann <daniel@iogearbox.net>,
Johan Almbladh <johan.almbladh@anyfinetworks.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>
Cc: bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 3/9] powerpc/bpf: Remove unused SEEN_STACK
Date: Tue, 5 Oct 2021 07:50:16 +0200 [thread overview]
Message-ID: <a9904ed3-c9fc-d86f-a720-de0a7e7a8938@csgroup.eu> (raw)
In-Reply-To: <1633369544.ekqufta9bg.naveen@linux.ibm.com>
Le 04/10/2021 à 20:11, Naveen N. Rao a écrit :
> Christophe Leroy wrote:
>>
>>
>> Le 01/10/2021 à 23:14, Naveen N. Rao a écrit :
>>> From: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
>>>
>>> SEEN_STACK is unused on PowerPC. Remove it. Also, have
>>> SEEN_TAILCALL use 0x40000000.
>>
>> Why change SEEN_TAILCALL ? Would it be a problem to leave it as is ?
>>
>>>
>>> Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
>>> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
>
> I prefer the bit usage to be contiguous. Changing SEEN_TAILCALL isn't a
> problem either.
>
Well you are adding SEEN_BIG_PROG in following patch so it would still
be contiguous at the end.
I don't really mind but I thought it would be less churn to just leave
SEEN_TAILCALL as is and re-use 0x40000000 for SEEN_BIG_PROG.
Anyway
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
next prev parent reply other threads:[~2021-10-05 5:50 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-01 21:14 [PATCH 0/9] powerpc/bpf: Various fixes Naveen N. Rao
2021-10-01 21:14 ` [PATCH 1/9] powerpc/lib: Add helper to check if offset is within conditional branch range Naveen N. Rao
2021-10-01 21:37 ` Song Liu
2021-10-04 18:02 ` Naveen N. Rao
2021-10-03 7:50 ` Christophe Leroy
2021-10-04 18:03 ` Naveen N. Rao
2021-10-01 21:14 ` [PATCH 2/9] powerpc/bpf: Validate branch ranges Naveen N. Rao
2021-10-01 21:45 ` Song Liu
2021-10-02 17:29 ` Johan Almbladh
2021-10-03 7:54 ` Christophe Leroy
2021-10-04 18:11 ` Naveen N. Rao
2021-10-01 21:14 ` [PATCH 3/9] powerpc/bpf: Remove unused SEEN_STACK Naveen N. Rao
2021-10-01 21:47 ` Song Liu
2021-10-02 17:30 ` Johan Almbladh
2021-10-03 7:55 ` Christophe Leroy
2021-10-04 18:11 ` Naveen N. Rao
2021-10-05 5:50 ` Christophe Leroy [this message]
2021-10-05 20:22 ` Naveen N. Rao
2021-10-01 21:14 ` [PATCH 4/9] powerpc/bpf: Handle large branch ranges with BPF_EXIT Naveen N. Rao
2021-10-01 21:53 ` Song Liu
2021-10-02 17:31 ` Johan Almbladh
2021-10-03 7:59 ` Christophe Leroy
2021-10-04 18:24 ` Naveen N. Rao
2021-10-05 5:46 ` Christophe Leroy
2022-01-07 11:46 ` Naveen N. Rao
2021-10-01 21:14 ` [PATCH 5/9] powerpc/bpf: Fix BPF_MOD when imm == 1 Naveen N. Rao
2021-10-01 21:55 ` Song Liu
2021-10-02 17:32 ` Johan Almbladh
2021-10-01 21:14 ` [PATCH 6/9] powerpc/bpf: Fix BPF_SUB when imm == 0x80000000 Naveen N. Rao
2021-10-01 22:01 ` Song Liu
2021-10-02 17:33 ` Johan Almbladh
2021-10-03 8:07 ` Christophe Leroy
2021-10-04 18:18 ` Naveen N. Rao
2021-10-05 5:40 ` Christophe Leroy
2021-10-01 21:14 ` [PATCH 7/9] powerpc/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 Naveen N. Rao
2021-10-02 17:35 ` Johan Almbladh
2021-10-01 21:14 ` [PATCH 8/9] powerpc/security: Add a helper to query stf_barrier type Naveen N. Rao
2021-10-01 21:14 ` [PATCH 9/9] powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC Naveen N. Rao
2021-10-02 17:41 ` [PATCH 0/9] powerpc/bpf: Various fixes Johan Almbladh
2021-10-04 18:19 ` Naveen N. Rao
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