From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> To: Michael Ellerman <mpe@ellerman.id.au>, Nicholas Piggin <npiggin@gmail.com>, Jordan Niethe <jniethe5@gmail.com>, Daniel Borkmann <daniel@iogearbox.net>, Alexei Starovoitov <alexei.starovoitov@gmail.com>, Christophe Leroy <christophe.leroy@csgroup.eu>, Johan Almbladh <johan.almbladh@anyfinetworks.com>, Song Liu <songliubraving@fb.com> Cc: <bpf@vger.kernel.org>, <linuxppc-dev@lists.ozlabs.org> Subject: [PATCH v2 09/10] powerpc/bpf ppc32: Do not emit zero extend instruction for 64-bit BPF_END Date: Wed, 6 Oct 2021 01:55:28 +0530 [thread overview] Message-ID: <b4e3c3546121315a8e2059b19a1bda84971816e4.1633464148.git.naveen.n.rao@linux.vnet.ibm.com> (raw) In-Reply-To: <cover.1633464148.git.naveen.n.rao@linux.vnet.ibm.com> Suppress emitting zero extend instruction for 64-bit BPF_END_FROM_[L|B]E operation. Fixes: 51c66ad849a703 ("powerpc/bpf: Implement extended BPF on PPC32") Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> --- arch/powerpc/net/bpf_jit_comp32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/net/bpf_jit_comp32.c b/arch/powerpc/net/bpf_jit_comp32.c index 7c65de9ed4fa64..68dc8a8231de04 100644 --- a/arch/powerpc/net/bpf_jit_comp32.c +++ b/arch/powerpc/net/bpf_jit_comp32.c @@ -1107,7 +1107,7 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, struct codegen_context * return -EOPNOTSUPP; } if (BPF_CLASS(code) == BPF_ALU && !fp->aux->verifier_zext && - !insn_is_zext(&insn[i + 1])) + !insn_is_zext(&insn[i + 1]) && !(BPF_OP(code) == BPF_END && imm == 64)) EMIT(PPC_RAW_LI(dst_reg_h, 0)); } -- 2.33.0
WARNING: multiple messages have this Message-ID (diff)
From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> To: Michael Ellerman <mpe@ellerman.id.au>, Nicholas Piggin <npiggin@gmail.com>, Jordan Niethe <jniethe5@gmail.com>, Daniel Borkmann <daniel@iogearbox.net>, Alexei Starovoitov <alexei.starovoitov@gmail.com>, Christophe Leroy <christophe.leroy@csgroup.eu>, Johan Almbladh <johan.almbladh@anyfinetworks.com>, Song Liu <songliubraving@fb.com> Cc: bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 09/10] powerpc/bpf ppc32: Do not emit zero extend instruction for 64-bit BPF_END Date: Wed, 6 Oct 2021 01:55:28 +0530 [thread overview] Message-ID: <b4e3c3546121315a8e2059b19a1bda84971816e4.1633464148.git.naveen.n.rao@linux.vnet.ibm.com> (raw) In-Reply-To: <cover.1633464148.git.naveen.n.rao@linux.vnet.ibm.com> Suppress emitting zero extend instruction for 64-bit BPF_END_FROM_[L|B]E operation. Fixes: 51c66ad849a703 ("powerpc/bpf: Implement extended BPF on PPC32") Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> --- arch/powerpc/net/bpf_jit_comp32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/net/bpf_jit_comp32.c b/arch/powerpc/net/bpf_jit_comp32.c index 7c65de9ed4fa64..68dc8a8231de04 100644 --- a/arch/powerpc/net/bpf_jit_comp32.c +++ b/arch/powerpc/net/bpf_jit_comp32.c @@ -1107,7 +1107,7 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, struct codegen_context * return -EOPNOTSUPP; } if (BPF_CLASS(code) == BPF_ALU && !fp->aux->verifier_zext && - !insn_is_zext(&insn[i + 1])) + !insn_is_zext(&insn[i + 1]) && !(BPF_OP(code) == BPF_END && imm == 64)) EMIT(PPC_RAW_LI(dst_reg_h, 0)); } -- 2.33.0
next prev parent reply other threads:[~2021-10-05 20:27 UTC|newest] Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-05 20:25 [PATCH v2 00/10] powerpc/bpf: Various fixes Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-05 20:25 ` [PATCH v2 01/10] powerpc/lib: Add helper to check if offset is within conditional branch range Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-06 4:50 ` Christophe Leroy 2021-10-05 20:25 ` [PATCH v2 02/10] powerpc/bpf: Validate branch ranges Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-06 4:51 ` LEROY Christophe 2021-10-06 4:51 ` Christophe Leroy 2021-10-05 20:25 ` [PATCH v2 03/10] powerpc/bpf: Fix BPF_MOD when imm == 1 Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-06 4:52 ` Christophe Leroy 2021-10-05 20:25 ` [PATCH v2 04/10] powerpc/bpf: Fix BPF_SUB when imm == 0x80000000 Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-06 4:55 ` Christophe Leroy 2021-10-07 8:47 ` Naveen N. Rao 2021-10-05 20:25 ` [PATCH v2 05/10] powerpc/security: Add a helper to query stf_barrier type Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-05 20:25 ` [PATCH v2 06/10] powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-05 20:25 ` [PATCH v2 07/10] powerpc/bpf ppc32: Fix ALU32 BPF_ARSH operation Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-06 4:56 ` Christophe Leroy 2021-10-05 20:25 ` [PATCH v2 08/10] powerpc/bpf ppc32: Fix JMP32_JSET_K Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-06 5:00 ` Christophe Leroy 2021-10-05 20:25 ` Naveen N. Rao [this message] 2021-10-05 20:25 ` [PATCH v2 09/10] powerpc/bpf ppc32: Do not emit zero extend instruction for 64-bit BPF_END Naveen N. Rao 2021-10-06 5:03 ` Christophe Leroy 2021-10-05 20:25 ` [PATCH v2 10/10] powerpc/bpf ppc32: Fix BPF_SUB when imm == 0x80000000 Naveen N. Rao 2021-10-05 20:25 ` Naveen N. Rao 2021-10-06 5:02 ` Christophe Leroy 2021-10-08 13:22 ` [PATCH v2 00/10] powerpc/bpf: Various fixes Michael Ellerman
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=b4e3c3546121315a8e2059b19a1bda84971816e4.1633464148.git.naveen.n.rao@linux.vnet.ibm.com \ --to=naveen.n.rao@linux.vnet.ibm.com \ --cc=alexei.starovoitov@gmail.com \ --cc=bpf@vger.kernel.org \ --cc=christophe.leroy@csgroup.eu \ --cc=daniel@iogearbox.net \ --cc=jniethe5@gmail.com \ --cc=johan.almbladh@anyfinetworks.com \ --cc=linuxppc-dev@lists.ozlabs.org \ --cc=mpe@ellerman.id.au \ --cc=npiggin@gmail.com \ --cc=songliubraving@fb.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.