From patchwork Thu Aug 24 09:49:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363361 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E7059C71153 for ; Thu, 24 Aug 2023 01:46:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=MCODvhAHjlXniP3ailnpWnvYMiXRq1jd+RZApm+X2kQ=; b=sG8x7/xaceWxOp gAOd9wUjjXGLbN0DsSj+v7ZQeQ2RS2DDhPv37FVVRkV0hXHGD+tB1EMiDcTC6FnnwKAJqEcK3KVCK c2DNN2U96YeDJ3HJq/zXhZu/JNs/+FWW8rj9tkYjj4sCMlaq8bw5T1UcSS+c4EWHjEXEet9jmuq77 6NDZnKTqN581IQwYtgYVqdBGb6Gm8WEmxTXnw2IPX0Elocy98yA3xy9i4qcx4iiZ6P7jvEkbiV/6j 6VzW9Xss2Qpx6IZfsami50wnFr4bkNBVK0zLbc4jAsBpptDiGi7CMQU4JRwWN+0mDkjZNGgYA+8jr 7WCQvIqSp+zb7StGlB3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQF-001u2q-0h; Thu, 24 Aug 2023 01:46:07 +0000 Received: from [45.249.212.56] (helo=dggsgout12.his.huawei.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQ7-001tyV-2t for linux-riscv@lists.infradead.org; Thu, 24 Aug 2023 01:46:03 +0000 Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4RWQs94HSSz4f3nwZ for ; Thu, 24 Aug 2023 09:45:49 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S3; Thu, 24 Aug 2023 09:45:52 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 1/7] riscv, bpf: Fix missing exception handling and redundant zext for LDX_B/H/W Date: Thu, 24 Aug 2023 09:49:55 +0000 Message-Id: <20230824095001.3408573-2-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S3 X-Coremail-Antispam: 1UD129KBjvJXoW7KFWrZr48AF1UXrW5GF1rWFg_yoW8Cw1Upr 45Gwnak34vqr4FqF1Dt3WUWw4ayFWUWanrWrZrKayrJa42vry3WrW3Kw1YvFy5Ary8Wr18 Ar4jvrnxu3Z8J37anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUm214x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2jI8I6cxK62vIxIIY0VWUZVW8XwA2048vs2IY02 0E87I2jVAFwI0_Jr4l82xGYIkIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2 F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjx v20xvEc7CjxVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2 z280aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0V AKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1l Ox8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErc IFxwACI402YVCY1x02628vn2kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMI IF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVF xhVjvjDU0xZFpf9x0pRPGYPUUUUU= X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_184600_258808_4B103835 X-CRM114-Status: UNSURE ( 8.59 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui For LDX_B/H/W, when zext has been inserted by verifier, it'll return 1, and no exception handling will continue. Also, when the offset is 12-bit value, the redundant zext inserted by the verifier is not removed. Fix both scenarios by moving down the removal of redundant zext. Signed-off-by: Pu Lehui --- arch/riscv/net/bpf_jit_comp64.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index 0ca4f5c0097c..f2644e7ea6b5 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -1512,8 +1512,6 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, insns_start = ctx->ninsns; emit(rv_lbu(rd, 0, RV_REG_T1), ctx); insn_len = ctx->ninsns - insns_start; - if (insn_is_zext(&insn[1])) - return 1; break; case BPF_H: if (is_12b_int(off)) { @@ -1528,8 +1526,6 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, insns_start = ctx->ninsns; emit(rv_lhu(rd, 0, RV_REG_T1), ctx); insn_len = ctx->ninsns - insns_start; - if (insn_is_zext(&insn[1])) - return 1; break; case BPF_W: if (is_12b_int(off)) { @@ -1544,8 +1540,6 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, insns_start = ctx->ninsns; emit(rv_lwu(rd, 0, RV_REG_T1), ctx); insn_len = ctx->ninsns - insns_start; - if (insn_is_zext(&insn[1])) - return 1; break; case BPF_DW: if (is_12b_int(off)) { @@ -1566,6 +1560,9 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, ret = add_exception_handler(insn, ctx, rd, insn_len); if (ret) return ret; + + if (BPF_SIZE(code) != BPF_DW && insn_is_zext(&insn[1])) + return 1; break; } /* speculation barrier */ From patchwork Thu Aug 24 09:49:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363362 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E2439C3DA6F for ; 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Thu, 24 Aug 2023 01:46:09 +0000 Received: from [45.249.212.51] (helo=dggsgout11.his.huawei.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQ7-001tyk-2t for linux-riscv@lists.infradead.org; Thu, 24 Aug 2023 01:46:04 +0000 Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4RWQsD3tk0z4f3mVy for ; Thu, 24 Aug 2023 09:45:52 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S4; Thu, 24 Aug 2023 09:45:52 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 2/7] riscv, bpf: Support sign-extension load insns Date: Thu, 24 Aug 2023 09:49:56 +0000 Message-Id: <20230824095001.3408573-3-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S4 X-Coremail-Antispam: 1UD129KBjvJXoWxGr4fWrWkArW5Kr1UAw1xGrg_yoWrtr17pF W3Gw1fC39YqrWSqF9rtF17Wr45Ar48WFnFgrW3K3yFqF4IqrZxWFyUtw4aya45GryrXa48 GFW2vryak3Z2grDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmI14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2jI8I6cxK62vIxIIY0VWUZVW8XwA2048vs2IY02 0E87I2jVAFwI0_Jryl82xGYIkIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2 F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjx v20xvEc7CjxVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2 z280aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0V AKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1l Ox8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErc IFxwACI402YVCY1x02628vn2kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCw CI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnI WIevJa73UjIFyTuYvjTRKLvtUUUUU X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_184600_284036_EAC56248 X-CRM114-Status: GOOD ( 10.48 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui Add Support sign-extension load instructions for RV64. Signed-off-by: Pu Lehui Acked-by: Björn Töpel --- arch/riscv/net/bpf_jit.h | 10 +++++++ arch/riscv/net/bpf_jit_comp64.c | 46 +++++++++++++++++++++++++++------ 2 files changed, 48 insertions(+), 8 deletions(-) diff --git a/arch/riscv/net/bpf_jit.h b/arch/riscv/net/bpf_jit.h index 2717f5490428..a52a3dda18c3 100644 --- a/arch/riscv/net/bpf_jit.h +++ b/arch/riscv/net/bpf_jit.h @@ -501,6 +501,16 @@ static inline u32 rv_ble(u8 rs1, u8 rs2, u16 imm12_1) return rv_bge(rs2, rs1, imm12_1); } +static inline u32 rv_lb(u8 rd, u16 imm11_0, u8 rs1) +{ + return rv_i_insn(imm11_0, rs1, 0, rd, 0x03); +} + +static inline u32 rv_lh(u8 rd, u16 imm11_0, u8 rs1) +{ + return rv_i_insn(imm11_0, rs1, 1, rd, 0x03); +} + static inline u32 rv_lw(u8 rd, u16 imm11_0, u8 rs1) { return rv_i_insn(imm11_0, rs1, 2, rd, 0x03); diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index f2644e7ea6b5..fd36cb17101a 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -580,7 +580,8 @@ static int add_exception_handler(const struct bpf_insn *insn, unsigned long pc; off_t offset; - if (!ctx->insns || !ctx->prog->aux->extable || BPF_MODE(insn->code) != BPF_PROBE_MEM) + if (!ctx->insns || !ctx->prog->aux->extable || + (BPF_MODE(insn->code) != BPF_PROBE_MEM && BPF_MODE(insn->code) != BPF_PROBE_MEMSX)) return 0; if (WARN_ON_ONCE(ctx->nexentries >= ctx->prog->aux->num_exentries)) @@ -1486,7 +1487,7 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, return 1; } - /* LDX: dst = *(size *)(src + off) */ + /* LDX: dst = *(unsigned size *)(src + off) */ case BPF_LDX | BPF_MEM | BPF_B: case BPF_LDX | BPF_MEM | BPF_H: case BPF_LDX | BPF_MEM | BPF_W: @@ -1495,14 +1496,28 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, case BPF_LDX | BPF_PROBE_MEM | BPF_H: case BPF_LDX | BPF_PROBE_MEM | BPF_W: case BPF_LDX | BPF_PROBE_MEM | BPF_DW: + /* LDSX: dst = *(signed size *)(src + off) */ + case BPF_LDX | BPF_MEMSX | BPF_B: + case BPF_LDX | BPF_MEMSX | BPF_H: + case BPF_LDX | BPF_MEMSX | BPF_W: + case BPF_LDX | BPF_PROBE_MEMSX | BPF_B: + case BPF_LDX | BPF_PROBE_MEMSX | BPF_H: + case BPF_LDX | BPF_PROBE_MEMSX | BPF_W: { int insn_len, insns_start; + bool sign_ext; + + sign_ext = BPF_MODE(insn->code) == BPF_MEMSX || + BPF_MODE(insn->code) == BPF_PROBE_MEMSX; switch (BPF_SIZE(code)) { case BPF_B: if (is_12b_int(off)) { insns_start = ctx->ninsns; - emit(rv_lbu(rd, off, rs), ctx); + if (sign_ext) + emit(rv_lb(rd, off, rs), ctx); + else + emit(rv_lbu(rd, off, rs), ctx); insn_len = ctx->ninsns - insns_start; break; } @@ -1510,13 +1525,19 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, emit_imm(RV_REG_T1, off, ctx); emit_add(RV_REG_T1, RV_REG_T1, rs, ctx); insns_start = ctx->ninsns; - emit(rv_lbu(rd, 0, RV_REG_T1), ctx); + if (sign_ext) + emit(rv_lb(rd, 0, RV_REG_T1), ctx); + else + emit(rv_lbu(rd, 0, RV_REG_T1), ctx); insn_len = ctx->ninsns - insns_start; break; case BPF_H: if (is_12b_int(off)) { insns_start = ctx->ninsns; - emit(rv_lhu(rd, off, rs), ctx); + if (sign_ext) + emit(rv_lh(rd, off, rs), ctx); + else + emit(rv_lhu(rd, off, rs), ctx); insn_len = ctx->ninsns - insns_start; break; } @@ -1524,13 +1545,19 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, emit_imm(RV_REG_T1, off, ctx); emit_add(RV_REG_T1, RV_REG_T1, rs, ctx); insns_start = ctx->ninsns; - emit(rv_lhu(rd, 0, RV_REG_T1), ctx); + if (sign_ext) + emit(rv_lh(rd, 0, RV_REG_T1), ctx); + else + emit(rv_lhu(rd, 0, RV_REG_T1), ctx); insn_len = ctx->ninsns - insns_start; break; case BPF_W: if (is_12b_int(off)) { insns_start = ctx->ninsns; - emit(rv_lwu(rd, off, rs), ctx); + if (sign_ext) + emit(rv_lw(rd, off, rs), ctx); + else + emit(rv_lwu(rd, off, rs), ctx); insn_len = ctx->ninsns - insns_start; break; } @@ -1538,7 +1565,10 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, emit_imm(RV_REG_T1, off, ctx); emit_add(RV_REG_T1, RV_REG_T1, rs, ctx); insns_start = ctx->ninsns; - emit(rv_lwu(rd, 0, RV_REG_T1), ctx); + if (sign_ext) + emit(rv_lw(rd, 0, RV_REG_T1), ctx); + else + emit(rv_lwu(rd, 0, RV_REG_T1), ctx); insn_len = ctx->ninsns - insns_start; break; case BPF_DW: From patchwork Thu Aug 24 09:49:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363357 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1C807C27C40 for ; 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Thu, 24 Aug 2023 01:46:03 +0000 Received: from [45.249.212.51] (helo=dggsgout11.his.huawei.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQ7-001tyY-2t for linux-riscv@lists.infradead.org; Thu, 24 Aug 2023 01:46:01 +0000 Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4RWQsC6NbDz4f3pFk for ; Thu, 24 Aug 2023 09:45:51 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S5; Thu, 24 Aug 2023 09:45:53 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 3/7] riscv, bpf: Support sign-extension mov insns Date: Thu, 24 Aug 2023 09:49:57 +0000 Message-Id: <20230824095001.3408573-4-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S5 X-Coremail-Antispam: 1UD129KBjvdXoWrtFW7tF1rtw13uFW8WFW7Jwb_yoWDJrb_Cr n7GayxWws8GFsxAa4DAr4fArykCws3KF1kJFyv9ryj9rs8Wr1rtryktFyxuryxur1FkFZ5 Zr95J3ySyw4aqjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbvxFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M280x2IEY4vEnII2IxkI6r1a6r45M28IrcIa0xkI8V A2jI8067AKxVWUWwA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28C jxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI 8IcVCY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E 87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64 kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm 72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYx C7M4IIrI8v6xkF7I0E8cxan2IY04v7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY 6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17 CEb7AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF 0xvE2Ix0cI8IcVCY1x0267AKxVWxJVW8Jr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMI IF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVF xhVjvjDU0xZFpf9x0pRPEf5UUUUU= X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_184600_097323_AC21B740 X-CRM114-Status: UNSURE ( 6.92 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui Add support sign-extension mov instructions for RV64. Signed-off-by: Pu Lehui Acked-by: Björn Töpel --- arch/riscv/net/bpf_jit_comp64.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index fd36cb17101a..bcf1e7509cb9 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -1047,7 +1047,19 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, emit_zext_32(rd, ctx); break; } - emit_mv(rd, rs, ctx); + switch (insn->off) { + case 0: + emit_mv(rd, rs, ctx); + break; + case 8: + case 16: + emit_slli(RV_REG_T1, rs, 64 - insn->off, ctx); + emit_srai(rd, RV_REG_T1, 64 - insn->off, ctx); + break; + case 32: + emit_addiw(rd, rs, 0, ctx); + break; + } if (!is64 && !aux->verifier_zext) emit_zext_32(rd, ctx); break; From patchwork Thu Aug 24 09:49:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363358 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 79D8DC3DA6F for ; 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Thu, 24 Aug 2023 01:46:03 +0000 Received: from [45.249.212.51] (helo=dggsgout11.his.huawei.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQ7-001tyX-2t for linux-riscv@lists.infradead.org; Thu, 24 Aug 2023 01:46:01 +0000 Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4RWQsC71mbz4f3pFp for ; Thu, 24 Aug 2023 09:45:51 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S6; Thu, 24 Aug 2023 09:45:53 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 4/7] riscv, bpf: Support 32-bit offset jmp insn Date: Thu, 24 Aug 2023 09:49:58 +0000 Message-Id: <20230824095001.3408573-5-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S6 X-Coremail-Antispam: 1UD129KBjvdXoW7Wry5Ww4rXry3Jr4UArykAFb_yoWfCwb_Cr yxJa4Ig398GFZ8Jw1Uur4Fvryjk393GF1DZ34SgFWUC3Z8W3Wvy34kKr9Iqryxur4xtFZx Zrn3Ja9Iyw4agjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb9kFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M280x2IEY4vEnII2IxkI6r1a6r45M28IrcIa0xkI8V A2jI8067AKxVWUAVCq3wA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJ M28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2I x0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK 6I8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4 xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8 JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20V AGYxC7M4IIrI8v6xkF7I0E8cxan2IY04v7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCj c4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4 CE17CEb7AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1x MIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJV WUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUv cSsGvfC2KfnxnUUI43ZEXa7sRiVbyDUUUUU== X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_184600_097325_331E37F0 X-CRM114-Status: UNSURE ( 7.80 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui Add support 32-bit offset jmp instruction for RV64. Signed-off-by: Pu Lehui Acked-by: Björn Töpel --- arch/riscv/net/bpf_jit_comp64.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index bcf1e7509cb9..076619f4aa82 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -1327,7 +1327,11 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, /* JUMP off */ case BPF_JMP | BPF_JA: - rvoff = rv_offset(i, off, ctx); + case BPF_JMP32 | BPF_JA: + if (BPF_CLASS(code) == BPF_JMP) + rvoff = rv_offset(i, off, ctx); + else + rvoff = rv_offset(i, imm, ctx); ret = emit_jump_and_link(RV_REG_ZERO, rvoff, true, ctx); if (ret) return ret; From patchwork Thu Aug 24 09:49:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363359 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4E476C6FA8F for ; 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Thu, 24 Aug 2023 01:46:07 +0000 Received: from [45.249.212.56] (helo=dggsgout12.his.huawei.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQ7-001tyW-2u for linux-riscv@lists.infradead.org; Thu, 24 Aug 2023 01:46:03 +0000 Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4RWQsB02Pmz4f3nxR for ; Thu, 24 Aug 2023 09:45:50 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S7; Thu, 24 Aug 2023 09:45:53 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 5/7] riscv, bpf: Support signed div/mod insns Date: Thu, 24 Aug 2023 09:49:59 +0000 Message-Id: <20230824095001.3408573-6-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S7 X-Coremail-Antispam: 1UD129KBjvJXoWxAFWrtF1DZFWxuw15Gr4rXwb_yoW5KF4fpr 9Ykrn3Z3yjqr4fJr9rJF4xXas5Arn2gwnFvF13KFWUtanFqrWDGrWfKw4fA3sxXrWfWa4D WFWY9r90k39Fyr7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmm14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2jI8I6cxK62vIxIIY0VWUZVW8XwA2048vs2IY02 0E87I2jVAFwI0_JF0E3s1l82xGYIkIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0 rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6x IIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xv wVC2z280aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFc xC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_ Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2 IErcIFxwACI402YVCY1x02628vn2kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE 7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI 8E67AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8 JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_Jr 0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1U YxBIdaVFxhVjvjDU0xZFpf9x0pRvJPtUUUUU= X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_184600_291449_96F630EB X-CRM114-Status: UNSURE ( 7.21 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui Add support signed div/mod instructions for RV64. Signed-off-by: Pu Lehui Acked-by: Björn Töpel --- arch/riscv/net/bpf_jit.h | 20 ++++++++++++++++++++ arch/riscv/net/bpf_jit_comp64.c | 26 ++++++++++++++++++++------ 2 files changed, 40 insertions(+), 6 deletions(-) diff --git a/arch/riscv/net/bpf_jit.h b/arch/riscv/net/bpf_jit.h index a52a3dda18c3..d21c6c92a683 100644 --- a/arch/riscv/net/bpf_jit.h +++ b/arch/riscv/net/bpf_jit.h @@ -431,11 +431,21 @@ static inline u32 rv_mulhu(u8 rd, u8 rs1, u8 rs2) return rv_r_insn(1, rs2, rs1, 3, rd, 0x33); } +static inline u32 rv_div(u8 rd, u8 rs1, u8 rs2) +{ + return rv_r_insn(1, rs2, rs1, 4, rd, 0x33); +} + static inline u32 rv_divu(u8 rd, u8 rs1, u8 rs2) { return rv_r_insn(1, rs2, rs1, 5, rd, 0x33); } +static inline u32 rv_rem(u8 rd, u8 rs1, u8 rs2) +{ + return rv_r_insn(1, rs2, rs1, 6, rd, 0x33); +} + static inline u32 rv_remu(u8 rd, u8 rs1, u8 rs2) { return rv_r_insn(1, rs2, rs1, 7, rd, 0x33); @@ -776,11 +786,21 @@ static inline u32 rv_mulw(u8 rd, u8 rs1, u8 rs2) return rv_r_insn(1, rs2, rs1, 0, rd, 0x3b); } +static inline u32 rv_divw(u8 rd, u8 rs1, u8 rs2) +{ + return rv_r_insn(1, rs2, rs1, 4, rd, 0x3b); +} + static inline u32 rv_divuw(u8 rd, u8 rs1, u8 rs2) { return rv_r_insn(1, rs2, rs1, 5, rd, 0x3b); } +static inline u32 rv_remw(u8 rd, u8 rs1, u8 rs2) +{ + return rv_r_insn(1, rs2, rs1, 6, rd, 0x3b); +} + static inline u32 rv_remuw(u8 rd, u8 rs1, u8 rs2) { return rv_r_insn(1, rs2, rs1, 7, rd, 0x3b); diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index 076619f4aa82..ba4535ac194f 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -1107,13 +1107,19 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, break; case BPF_ALU | BPF_DIV | BPF_X: case BPF_ALU64 | BPF_DIV | BPF_X: - emit(is64 ? rv_divu(rd, rd, rs) : rv_divuw(rd, rd, rs), ctx); + if (off) + emit(is64 ? rv_div(rd, rd, rs) : rv_divw(rd, rd, rs), ctx); + else + emit(is64 ? rv_divu(rd, rd, rs) : rv_divuw(rd, rd, rs), ctx); if (!is64 && !aux->verifier_zext) emit_zext_32(rd, ctx); break; case BPF_ALU | BPF_MOD | BPF_X: case BPF_ALU64 | BPF_MOD | BPF_X: - emit(is64 ? rv_remu(rd, rd, rs) : rv_remuw(rd, rd, rs), ctx); + if (off) + emit(is64 ? rv_rem(rd, rd, rs) : rv_remw(rd, rd, rs), ctx); + else + emit(is64 ? rv_remu(rd, rd, rs) : rv_remuw(rd, rd, rs), ctx); if (!is64 && !aux->verifier_zext) emit_zext_32(rd, ctx); break; @@ -1284,16 +1290,24 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, case BPF_ALU | BPF_DIV | BPF_K: case BPF_ALU64 | BPF_DIV | BPF_K: emit_imm(RV_REG_T1, imm, ctx); - emit(is64 ? rv_divu(rd, rd, RV_REG_T1) : - rv_divuw(rd, rd, RV_REG_T1), ctx); + if (off) + emit(is64 ? rv_div(rd, rd, RV_REG_T1) : + rv_divw(rd, rd, RV_REG_T1), ctx); + else + emit(is64 ? rv_divu(rd, rd, RV_REG_T1) : + rv_divuw(rd, rd, RV_REG_T1), ctx); if (!is64 && !aux->verifier_zext) emit_zext_32(rd, ctx); break; case BPF_ALU | BPF_MOD | BPF_K: case BPF_ALU64 | BPF_MOD | BPF_K: emit_imm(RV_REG_T1, imm, ctx); - emit(is64 ? rv_remu(rd, rd, RV_REG_T1) : - rv_remuw(rd, rd, RV_REG_T1), ctx); + if (off) + emit(is64 ? rv_rem(rd, rd, RV_REG_T1) : + rv_remw(rd, rd, RV_REG_T1), ctx); + else + emit(is64 ? rv_remu(rd, rd, RV_REG_T1) : + rv_remuw(rd, rd, RV_REG_T1), ctx); if (!is64 && !aux->verifier_zext) emit_zext_32(rd, ctx); break; From patchwork Thu Aug 24 09:50:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363363 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E5E78C71145 for ; Thu, 24 Aug 2023 01:46:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ak7ymPFBUEXfeUPBLiow5YwR38f3Sfbz/UHLJSI4rfM=; b=XhcaVByq4AvOAu psamYBnOURZFR/bGj2MusroJ7nxWVNnuGXH8dmw/M0Ox4NWK5ZNJdfo6Am4L/bPolaUIKm7k3Co+3 4qE/V1S3wf3l7eJpEnG9WCwq0ncvWtpPANSymZcv5U1oO4RtBHNpr4prmpPAqIxpjB3dR9RpmNe0v OvX+PLXPyFsnnFnDkk+ZwG5Kj1EjgIC3fWOBsStnkeiCLgBHLgk76yRy1/5jU5EXEDS9BbxS/IXr4 4o7Ozn9Qh8XWJE2C3e0GpZGoQBopfsw6Mikhov1tMjMPCrY67t40Y7dy38Ritna1k4RJPpfrfotMQ 5VLE6GmsfrGCAx/KPyVg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQE-001u2b-2B; Thu, 24 Aug 2023 01:46:06 +0000 Received: from [45.249.212.51] (helo=dggsgout11.his.huawei.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQ7-001tyi-2t for linux-riscv@lists.infradead.org; Thu, 24 Aug 2023 01:46:03 +0000 Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4RWQsD6fZ0z4f3jHT for ; Thu, 24 Aug 2023 09:45:52 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S8; Thu, 24 Aug 2023 09:45:53 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 6/7] riscv, bpf: Support unconditional bswap insn Date: Thu, 24 Aug 2023 09:50:00 +0000 Message-Id: <20230824095001.3408573-7-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S8 X-Coremail-Antispam: 1UD129KBjvdXoWrKF1kZry8Xw1xAF13Ar1xGrg_yoWfXrg_Cr y8JFWIqw45JF1Iqr4UuF4ruryqkw4fKFyrZF1v9rWjk3Z8Was5ZryvyFyavryxZryrtrZ8 Zwn3JaySvw42gjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb9xFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M280x2IEY4vEnII2IxkI6r1a6r45M28IrcIa0xkI8V A2jI8067AKxVWUAVCq3wA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJ M28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2I x0cI8IcVCY1x0267AKxVWxJr0_GcWl84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vE x4A2jsIEc7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2 IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4U McvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I64 8v4I1lFIxGxcIEc7CjxVA2Y2ka0xkIwI1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Y z7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zV AF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JFI_Gr1l IxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r 1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIY CTnIWIevJa73UjIFyTuYvjTRKfOwUUUUU X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_184600_102797_198F7B43 X-CRM114-Status: UNSURE ( 6.26 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui Add support unconditional bswap instruction. Since riscv is always little-endian, just treat the unconditional scenario the same as big-endian conversion. Signed-off-by: Pu Lehui Acked-by: Björn Töpel --- arch/riscv/net/bpf_jit_comp64.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index ba4535ac194f..8423f4ddf8f5 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -1168,6 +1168,7 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, break; case BPF_ALU | BPF_END | BPF_FROM_BE: + case BPF_ALU64 | BPF_END | BPF_FROM_LE: emit_li(RV_REG_T2, 0, ctx); emit_andi(RV_REG_T1, rd, 0xff, ctx); From patchwork Thu Aug 24 09:50:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363360 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 98F1CC27C40 for ; Thu, 24 Aug 2023 01:46:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=H4l0hRVJi3hDoYgMm1OY96fsTkY0EJ+szfFPP00oDT4=; b=AFfMcRktCoJZv2 LBhH2ro3foW+qmRflAgTTtQhBnrFiTujq1GGMY1HqMCLjhUBWbb1cZ1dcrxirov1MtOVdA+IAUdsn IDmpTV38BUmKiPBNd46eAxm+JEfLMZ22/5XJqGvoWmsyuXUdCOHWPsD5bEnIUbWsDD8Ab8iujkDMr q64e0qhRAagcwxezGNznskmhYXa82KIdZ2vRKyam6NV3fQMEkW4Zi6yrrdS5tqAUM6eeZFwsEwcqJ u+W4wlsOOx20sgbfZYIDLimoWzTrgqDcudvrteLPdnldfpsBfAXKH8qepJfJQgWIAi7wSiMDewG+q BQhpgPhgnh+ScoxRiHpg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQG-001u3V-1B; Thu, 24 Aug 2023 01:46:08 +0000 Received: from [45.249.212.56] (helo=dggsgout12.his.huawei.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYzQ7-001tyU-2u for linux-riscv@lists.infradead.org; Thu, 24 Aug 2023 01:46:03 +0000 Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4RWQsB1TQ7z4f3s5l for ; Thu, 24 Aug 2023 09:45:50 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S9; Thu, 24 Aug 2023 09:45:53 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 7/7] selftests/bpf: Enable cpu v4 tests for RV64 Date: Thu, 24 Aug 2023 09:50:01 +0000 Message-Id: <20230824095001.3408573-8-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S9 X-Coremail-Antispam: 1UD129KBjvJXoWxCF1kCrWxGF1DGFWUZw4DXFb_yoW7Jw1Dp3 WkuasIy3WxKF1a9F1fAF4jvFWrGrs7ZrWUAFW0vr4Du3ZrJrWIqr92kr45J390grZYvrs5 Zw1IgwnxZr48Zw7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmv14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2jI8I6cxK62vIxIIY0VWUZVW8XwA2048vs2IY02 0E87I2jVAFwI0_JF0E3s1l82xGYIkIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0 rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6x IIjxv20xvEc7CjxVAFwI0_Cr1j6rxdM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK 6I8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4 xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8 JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20V AGYxC7M4IIrI8v6xkF7I0E8cxan2IY04v7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCj c4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4 CE17CEb7AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4U MIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJV WUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUv cSsGvfC2KfnxnUUI43ZEXa7sRiVbyDUUUUU== X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_184600_257549_F149EE2B X-CRM114-Status: UNSURE ( 7.48 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui Enable cpu v4 tests for RV64, and the relevant tests have passed. Signed-off-by: Pu Lehui Acked-by: Yonghong Song Acked-by: Björn Töpel --- tools/testing/selftests/bpf/progs/test_ldsx_insn.c | 3 ++- tools/testing/selftests/bpf/progs/verifier_bswap.c | 3 ++- tools/testing/selftests/bpf/progs/verifier_gotol.c | 3 ++- tools/testing/selftests/bpf/progs/verifier_ldsx.c | 3 ++- tools/testing/selftests/bpf/progs/verifier_movsx.c | 3 ++- tools/testing/selftests/bpf/progs/verifier_sdiv.c | 3 ++- 6 files changed, 12 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/bpf/progs/test_ldsx_insn.c b/tools/testing/selftests/bpf/progs/test_ldsx_insn.c index 916d9435f12c..67c14ba1e87b 100644 --- a/tools/testing/selftests/bpf/progs/test_ldsx_insn.c +++ b/tools/testing/selftests/bpf/progs/test_ldsx_insn.c @@ -5,7 +5,8 @@ #include #include -#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86)) && __clang_major__ >= 18 +#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ + (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) && __clang_major__ >= 18 const volatile int skip = 0; #else const volatile int skip = 1; diff --git a/tools/testing/selftests/bpf/progs/verifier_bswap.c b/tools/testing/selftests/bpf/progs/verifier_bswap.c index 770f9d882542..8893094725f0 100644 --- a/tools/testing/selftests/bpf/progs/verifier_bswap.c +++ b/tools/testing/selftests/bpf/progs/verifier_bswap.c @@ -4,7 +4,8 @@ #include #include "bpf_misc.h" -#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86)) && __clang_major__ >= 18 +#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ + (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) && __clang_major__ >= 18 SEC("socket") __description("BSWAP, 16") diff --git a/tools/testing/selftests/bpf/progs/verifier_gotol.c b/tools/testing/selftests/bpf/progs/verifier_gotol.c index 17319a505e87..2dae5322a18e 100644 --- a/tools/testing/selftests/bpf/progs/verifier_gotol.c +++ b/tools/testing/selftests/bpf/progs/verifier_gotol.c @@ -4,7 +4,8 @@ #include #include "bpf_misc.h" -#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86)) && __clang_major__ >= 18 +#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ + (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) && __clang_major__ >= 18 SEC("socket") __description("gotol, small_imm") diff --git a/tools/testing/selftests/bpf/progs/verifier_ldsx.c b/tools/testing/selftests/bpf/progs/verifier_ldsx.c index 4a2b567c0f69..0c638f45aaf1 100644 --- a/tools/testing/selftests/bpf/progs/verifier_ldsx.c +++ b/tools/testing/selftests/bpf/progs/verifier_ldsx.c @@ -4,7 +4,8 @@ #include #include "bpf_misc.h" -#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86)) && __clang_major__ >= 18 +#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ + (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) && __clang_major__ >= 18 SEC("socket") __description("LDSX, S8") diff --git a/tools/testing/selftests/bpf/progs/verifier_movsx.c b/tools/testing/selftests/bpf/progs/verifier_movsx.c index d9528d578bd9..3c8ac2c57b1b 100644 --- a/tools/testing/selftests/bpf/progs/verifier_movsx.c +++ b/tools/testing/selftests/bpf/progs/verifier_movsx.c @@ -4,7 +4,8 @@ #include #include "bpf_misc.h" -#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86)) && __clang_major__ >= 18 +#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ + (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) && __clang_major__ >= 18 SEC("socket") __description("MOV32SX, S8") diff --git a/tools/testing/selftests/bpf/progs/verifier_sdiv.c b/tools/testing/selftests/bpf/progs/verifier_sdiv.c index fa3945930e93..0990f8825675 100644 --- a/tools/testing/selftests/bpf/progs/verifier_sdiv.c +++ b/tools/testing/selftests/bpf/progs/verifier_sdiv.c @@ -4,7 +4,8 @@ #include #include "bpf_misc.h" -#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86)) && __clang_major__ >= 18 +#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ + (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) && __clang_major__ >= 18 SEC("socket") __description("SDIV32, non-zero imm divisor, check 1")