From nobody Mon Feb 9 20:34:51 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1601410028; cv=none; d=zohomail.com; s=zohoarc; b=bjgYHiNHJ37AgOqakcxRoZqUa7Hmo5UtfdOcMRCwqRyTnA/bIp93G6LI97qmgivdHBTjbm1L0oq/T0TR9Wr0KQP+JlA8AGmp2WdxXewWEpQyRXYTXs2gLTDXQA0/M0GligRZMrbtogyaxWf77xN0FAwRJxz7umgGA7Exnjmp/JE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1601410028; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=W1RnwHdcfPqUNeQK0zvGYuf3hB9xeHXDqfa7SIUjDuo=; b=JghlVXEdrOsWFH3yeg5mSDwP8wMkRgIRBA9YBNEoGSuNoDUjj+I5EkOfQg5zpXjdRxkhL2BFbiiFejO4OJ0oUpc6j0uR3yus+C4Gzy2c+PzYQvptNvO1cnh6DKT/GTY90G2XEr42CgkK6RXvXtBID9F6+AUsUfYIiRVmcoC8V4g= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1601410028837149.9202888189027; Tue, 29 Sep 2020 13:07:08 -0700 (PDT) Received: from localhost ([::1]:35180 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kNLtz-0000kF-Ko for importer@patchew.org; Tue, 29 Sep 2020 16:07:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45458) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNKzu-0008Eb-BX for qemu-devel@nongnu.org; Tue, 29 Sep 2020 15:09:10 -0400 Received: from mail-pf1-x441.google.com ([2607:f8b0:4864:20::441]:36351) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kNKzs-0002Wp-NJ for qemu-devel@nongnu.org; Tue, 29 Sep 2020 15:09:10 -0400 Received: by mail-pf1-x441.google.com with SMTP id d9so5550710pfd.3 for ; Tue, 29 Sep 2020 12:09:08 -0700 (PDT) Received: from localhost.localdomain (122-116-72-36.HINET-IP.hinet.net. [122.116.72.36]) by smtp.gmail.com with ESMTPSA id v8sm6003950pgg.58.2020.09.29.12.09.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Sep 2020 12:09:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=W1RnwHdcfPqUNeQK0zvGYuf3hB9xeHXDqfa7SIUjDuo=; b=KwEYdBgtpMNJOx/cj77iAtoIb5CneK1nbmpzGIGRJPYffVLScnX6zvs9OYm0i9JZQK WWl7pEZDavHD48GDDzZn9ppUX6K7Ngewa1DJZ4WCKmaKyubJ2gBH5L0q0YHLIYs9dG7P zGzBHTgvALrm2b7S5c2gnVA5CiT0LxppPTTlM+vVFT3Kdgu4BjgH8DQpO4z10iDg4RwI GYkCxybTy/b9wj4Y92gF9NLm5v48z5kVl69xBvewaSmgO/ZyiQ6OJ2ygXnZ75rmFQKsS bM7CoGrgv9Je9wwAzMArxHqXaF5iDhGVH1b0qD3jhMH2noBgoIYBUIOev1JZtEsH4Os1 obgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=W1RnwHdcfPqUNeQK0zvGYuf3hB9xeHXDqfa7SIUjDuo=; b=mYs7/Pqi+kZa6doOOtVCJY/iXjT27/ydmwZL5O+CEwJyTI2PmcMQo3lNFeC+dIumM0 5SWIi8d7r30fAEx0X1lsatd3BAKNjz2MLZNmXOrfF6G7bvkSO08p9/FfJDY3gOIETs3w QIVy3yOJgF7iXSE4yZe8Ho4B03I0TXlyw2Gs/4t4VlAVTmo3fsISbzrxwRujKxTxzja/ 145laPfm/7MdfgSOkQJV35LYzdUnJtdvqYVGhaAeKv1IjDBYaUfKZpJ2zsM128b2MBMS JdkOeap02p5juqgqOQASX3x+HOKln4Af/5ImdyNHtkxTq79pJguQx7ol7rZPi7R4aFfM rHgw== X-Gm-Message-State: AOAM531wRbW9RYHqYZRIHZUI2PoYJk0Rg+VUKl1aZ0vzr32nmcRGZa3r szvouzX54DkdWEYEK420qTRxxxUrOPGIRw== X-Google-Smtp-Source: ABdhPJyPcD0QtMAPSqvqWHHV41sujCrP5LwrHoX1s/vQJkhd6rI/XUIEHQHDmE53ypjRcSGsVouD8Q== X-Received: by 2002:a63:1b44:: with SMTP id b4mr4264053pgm.175.1601406547270; Tue, 29 Sep 2020 12:09:07 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v5 64/68] target/riscv: rvv-1.0: relax RV_VLEN_MAX to 1024-bits Date: Wed, 30 Sep 2020 03:04:39 +0800 Message-Id: <20200929190448.31116-65-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200929190448.31116-1-frank.chang@sifive.com> References: <20200929190448.31116-1-frank.chang@sifive.com> Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::441; envelope-from=frank.chang@sifive.com; helo=mail-pf1-x441.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagar Karandikar , Frank Chang , Bastian Koppelmann , Richard Henderson , Alistair Francis , Palmer Dabbelt , LIU Zhiwei Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Frank Chang Signed-off-by: Frank Chang -- Signed-off-by: Frank Chang --- target/riscv/cpu.h | 2 +- target/riscv/insn_trans/trans_rvv.c.inc | 4 ++-- target/riscv/vector_helper.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 930607de24..ca78b7f352 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -92,7 +92,7 @@ typedef struct CPURISCVState CPURISCVState; =20 #include "pmp.h" =20 -#define RV_VLEN_MAX 256 +#define RV_VLEN_MAX 1024 =20 FIELD(VTYPE, VLMUL, 0, 3) FIELD(VTYPE, VSEW, 3, 3) diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_tr= ans/trans_rvv.c.inc index db6c3d9bdf..576d20c6eb 100644 --- a/target/riscv/insn_trans/trans_rvv.c.inc +++ b/target/riscv/insn_trans/trans_rvv.c.inc @@ -631,8 +631,8 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1, ui= nt32_t data, base =3D tcg_temp_new(); =20 /* - * As simd_desc supports at most 256 bytes, and in this implementation, - * the max vector group length is 2048 bytes. So split it into two par= ts. + * As simd_desc supports at most 2048 bytes, and in this implementatio= n, + * the max vector group length is 4096 bytes. So split it into two par= ts. * * The first part is vlen in bytes, encoded in maxsz of simd_desc. * The second part is lmul, encoded in data of simd_desc. diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 8d389af4b7..16331939b6 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -129,7 +129,7 @@ static uint32_t vext_wd(uint32_t desc) static inline uint32_t vext_max_elems(uint32_t desc, uint32_t esz) { /* - * As simd_desc support at most 256 bytes, the max vlen is 256 bits. + * As simd_desc support at most 2048 bytes, the max vlen is 1024 bits. * so vlen in bytes (vlenb) is encoded as maxsz. */ uint32_t vlenb =3D simd_maxsz(desc); --=20 2.17.1