From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 C4855CD37A7 for ; Wed, 4 Sep 2024 00:06:50 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sldWw-0006Cf-AG; Tue, 03 Sep 2024 20:05:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sldWi-00069s-Eg; Tue, 03 Sep 2024 20:05:37 -0400 Received: from mail-vk1-xa34.google.com ([2607:f8b0:4864:20::a34]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sldWg-0003h6-KU; Tue, 03 Sep 2024 20:05:36 -0400 Received: by mail-vk1-xa34.google.com with SMTP id 71dfb90a1353d-4fce2c0707bso1705615e0c.2; Tue, 03 Sep 2024 17:05:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1725408331; x=1726013131; darn=nongnu.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=x6D6h+E33ca8Vnp6Fonk4Os9QPHKHEISxdCxy/av7cY=; b=Q6OypOVkL3ROtXRAQuopLbn65q0xg8keffSShFvWwYrKOcjV0PqggoAP5+pRlPyUBe 5QsNsNvyWYnrOtp5y7Opj9W7dT82lTwFVXaRD3sCkslCAwmO1wgRwe8wzrmUe2fZkCAw RjagC83SoS+K0UvKbUuP3shQbOrdv/guTJgSf2i8KW9T4kB5JcMxeR1eZ7WydPASrMUQ yaoPq+iSCGkD+C4i6lSp2dzWmBokPXbCCM0HPzFrCzg8JOG17MUfWnReKPoYnov026EB Hhovp25EO4PWPN2e2uesNNa93AlnndORQDP0pujTHfm+VIf7pQxOHsW8DajUyjTM8HBZ eGXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725408331; x=1726013131; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=x6D6h+E33ca8Vnp6Fonk4Os9QPHKHEISxdCxy/av7cY=; b=aP28BFwagaIrtEWOHm5RmCW72vs0lk8P0fbWfz/DHHajqj4uMFYy8Ru6hkt0mwziag U6HabYyviHKXAiyAEG/WiLmISQ0LS3qs8eUnRNyKXOOhXjS+ELJEhDpqSMC3rV+vVyBf Rx/UkuWYtX1Cm95R37ffI17cGcKyzC0g6aCMeIYmDz88/6gLYfJdUbyBI+7O2RLOG1P+ yLjdkAtDV3y1hkeDv6Z7i1fEq79gLpw/ad7HNt+8Ljq7brCT+FtFHkbcX5ReUqgv7NJt pqD+CDA9A6Istq8LvgdKjd0uQJh1sVGXweIdEykKTMftgikM9UQ0IzmfzN8WqZmP4H7H dgaA== X-Forwarded-Encrypted: i=1; AJvYcCXFqTALieexqL86z/ixfjqLYspcNnNfk0vtm3NFYnK+dN2bX50zk5OWFr8IpN3Ui8CbxgDAYaWOforz@nongnu.org X-Gm-Message-State: AOJu0YxUkOQVH+MM8orZWSh7WlOXtU3KvznizEtRq4tVl1BgLSLr3Veo Qsig4jmFzXkPD7bv94MUNLJOrjIV3hpEqz9hSZ60UD/utXRpCPciMGSB6YAwk5vCHeGMuAH1jAW da2BbZAOmAppMTLRVc9XQvYyuGsA= X-Google-Smtp-Source: AGHT+IFMI+kF4kt6uFz15KCIfLoz1fhJ74VTfjik9r75sZ67Y8KGCe+S0fnguMRDbX+tPKloPzTKfVHhtKvGARxMdzM= X-Received: by 2002:a05:6122:2902:b0:500:daf1:4b05 with SMTP id 71dfb90a1353d-500daf16bc1mr4218092e0c.1.1725408330702; Tue, 03 Sep 2024 17:05:30 -0700 (PDT) MIME-Version: 1.0 References: <20240903061757.1114957-1-fea.wang@sifive.com> <20240903061757.1114957-2-fea.wang@sifive.com> In-Reply-To: <20240903061757.1114957-2-fea.wang@sifive.com> From: Alistair Francis Date: Wed, 4 Sep 2024 10:05:04 +1000 Message-ID: Subject: Re: [PATCH 1/5] target/riscv: Add svukte extension capability variable To: "Fea.Wang" Cc: qemu-devel@nongnu.org, qemu-riscv@nongnu.org, Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , Frank Chang , Jim Shu Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2607:f8b0:4864:20::a34; envelope-from=alistair23@gmail.com; helo=mail-vk1-xa34.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Tue, Sep 3, 2024 at 4:15=E2=80=AFPM Fea.Wang wrote= : > > Refer to the draft of svukte extension from: > https://github.com/riscv/riscv-isa-manual/pull/1564 We won't be able to merge this while the spec is just a pull request. We need a fixes spec that we can point out with a version Alistair > > Svukte provides a means to make user-mode accesses to supervisor memory > raise page faults in constant time, mitigating attacks that attempt to > discover the supervisor software's address-space layout. > > Signed-off-by: Fea.Wang > Reviewed-by: Frank Chang > Reviewed-by: Jim Shu > --- > target/riscv/cpu_cfg.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h > index 96fe26d4ea..636b12e1c2 100644 > --- a/target/riscv/cpu_cfg.h > +++ b/target/riscv/cpu_cfg.h > @@ -81,6 +81,7 @@ struct RISCVCPUConfig { > bool ext_svinval; > bool ext_svnapot; > bool ext_svpbmt; > + bool ext_svukte; > bool ext_zdinx; > bool ext_zaamo; > bool ext_zacas; > -- > 2.34.1 > >