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 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 E397EC5B555 for ; Mon, 2 Jun 2025 20:12:24 +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=7VnlSvNUNnbfrNrNEwtjT7623V8k5oymNiIty95IlEo=; b=xwS6VqBl7tG4Jf 7Ac+UdfmfuxWT0qXEfUuRGkb0zmGtYtlZ0zctNC1nQJz9BMQ8eHtrk8n3l75uVpCp+xLFV1iGWnD4 dR/JXPa0vl+gNaf48bbHVnLZ/0JL5lf2FyM3navTKp7W9Nibylr9a0Qj3bGt7Le7V0+hl9aogmtfi 1aiB/rKAocD84oVg1CzFAbtoh0ZdCc9ZN2wkj8kLXsQInvjoi7wrxrHmc1riOq92w2U+6DsVaMAt2 is43LVvm/jy7tb9ViR2uIVReXGSwjkScy/jQqQ+zfjPRZdD8wj7Vzu3CdTy/fghmq4Y/uK8bvpIsr lYz+NfeDAZtEQ/cQVeGw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uMBVz-00000008gzF-0zmT; Mon, 02 Jun 2025 20:12:11 +0000 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uMB5Q-00000008Znc-1Siy for linux-riscv@lists.infradead.org; Mon, 02 Jun 2025 19:44:45 +0000 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-2352e3db62cso31006205ad.2 for ; Mon, 02 Jun 2025 12:44:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1748893483; x=1749498283; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Db/Ed44rvRu053l+IvlTe4ds9o8zgJplXr/Yk0XQfi8=; b=YXSVUeJnFp4awllHGcOGW5mAm+v1cfD/GTvxZbraF1hlDzgqORN4OIkaBqU9Pj09U9 F+aYDaieR2vP83HkSmy6WCiDaXQjGaGH7UbXTc8cuK8exJTkcpLhtsjbIdQBGe67Nzup HXbHee9zuqxDK1i3IckCRF2yGjEbRJsQpWCUZE/bZQOeJ7tysPzkCJ79K0ESzeOijYWx 0uakyeNwei+nE+bdx9OMncMUXUPU3Pbnr/pMFxXmF+Kaiz2TePS3dkAsckskvohXG0ZE xEWXVbILUtyKK+DZMun7QWL+Da8MQ6hKZj2M3nHD8VnX2/oAScD+mCTcx3Tdr3vBfvK7 mhgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748893483; x=1749498283; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Db/Ed44rvRu053l+IvlTe4ds9o8zgJplXr/Yk0XQfi8=; b=CfhjhjUPtf2X4xVOHMcJYDjtNJPE+6oYUkUlOjL0eEatdL3ru6pzeQF9Z3gieo5AzU +0S9KYeUCubsX+VW7+I95PK4TyZg8/WY38NAp/idt7ySFlRK5GOpm1jUgFVmaJPDHjh9 oqfTiWlRF9QicBWt6sympmx4pwIWkCy2k6be0lmjuwHqColiw40nH7Xi79ExvCL2YP0w cIxwwECufySSF8zDUiTaRVJpPh/byo8+5SpoGu9V+UDHMfaXTrQ2LG+WGnXi5WgT7SEd ZFioLPCTURKVKaLqCyF1UckSLXFeRoDXSuLEGgN941UNavedFce71drkDj8I04Gb1P+p WwoA== X-Gm-Message-State: AOJu0Yw5Mmjs087IRjT2ZB2O5kF/Zrv0V8FqLvjD5QcdlKwhBk8iygrm 75x7PMp+JSw2g56xVi3FrxP9tSbSpHMLXg3oTtq5M4GzvvNJsf9kQu+0ZvLCXYQpmmmQSCmR7fN lmlCYUic= X-Gm-Gg: ASbGncu0QFyXLkKI7+5klWx+4CHBBFqaH7ZySDGkIf1h6i2DSKc0wbhXCQo3LAbHrrE evjhe0c78QikeTnyDsLGE9BIx8Ss7a/zeTHYziIqp5fCBdrruYtCc5p9Kxm4TnzmEHS+FlZWJJH QMN9Lmq45FIOseKqUhuee1tyW7HT2iE36HQcAEF7hzXjKU6M6b57GR5N/0Qy8Z8ApX/pUVgzGl2 HPMfyOZVNKhswHHAt56dJ1VTcva2Tdsmi2yq1MA8SZ2QlBVBwjlz/h5ddWA8qIr93rF0ayxBSpq IQxuyTt3qBcqkBo3MPmJX2cxQ6aFNAOj83no86LgojDMgmIFOn1B X-Google-Smtp-Source: AGHT+IFbuzLN7KFe7fs8Vc2nBOhFcNV/tot07VDwvWe1dI2/MhaIzuoXM1xe//BMSqSz86QiYuqiUQ== X-Received: by 2002:a17:902:e80e:b0:234:d2fb:2d0e with SMTP id d9443c01a7336-235289c81eamr244455005ad.10.1748893483100; Mon, 02 Jun 2025 12:44:43 -0700 (PDT) Received: from carbon-x1.. ([2a01:e0a:e17:9700:16d2:7456:6634:9626]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23506bd974asm74589615ad.97.2025.06.02.12.44.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Jun 2025 12:44:42 -0700 (PDT) From: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= To: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Cc: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , "Maciej W . Rozycki" , David Laight Subject: [PATCH v2 3/3] riscv: uaccess: do not do misaligned accesses in get/put_user() Date: Mon, 2 Jun 2025 21:39:16 +0200 Message-ID: <20250602193918.868962-4-cleger@rivosinc.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250602193918.868962-1-cleger@rivosinc.com> References: <20250602193918.868962-1-cleger@rivosinc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250602_124444_390175_E234A7BB X-CRM114-Status: GOOD ( 15.36 ) 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: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org RG9pbmcgbWlzYWxpZ25lZCBhY2Nlc3MgdG8gdXNlcnNwYWNlIG1lbW9yeSB3b3VsZCBtYWtlIGEg dHJhcCBvbgpwbGF0Zm9ybSB3aGVyZSBpdCBpcyBlbXVsYXRlZC4gTGF0ZXN0IGZpeGVzIHJlbW92 ZWQgdGhlIGtlcm5lbApjYXBhYmlsaXR5IHRvIGRvIHVuYWxpZ25lZCBhY2Nlc3NlcyB0byB1c2Vy c3BhY2UgbWVtb3J5IHNhZmVseSBzaW5jZQppbnRlcnJ1cHRzIGFyZSBrZXB0IGRpc2FibGVkIGF0 IGFsbCB0aW1lIGR1cmluZyB0aGF0LiBUaHVzIGRvaW5nIHNvCndvdWxkIGNyYXNoIHRoZSBrZXJu ZWwuCgpTdWNoIGJlaGF2aW9yIHdhcyBkZXRlY3RlZCB3aXRoIEdFVF9VTkFMSUdOX0NUTCgpIHRo YXQgd2FzIGRvaW5nCmEgcHV0X3VzZXIoKSB3aXRoIGFuIHVuc2lnbmVkIGxvbmcqIGFkZHJlc3Mg dGhhdCBzaG91bGQgaGF2ZSBiZWVuIGFuCnVuc2lnbmVkIGludCouIFJlZW5hYmxpbmcga2VybmVs IG1pc2FsaWduZWQgYWNjZXNzIGVtdWxhdGlvbiBpcyBhIGJpdApyaXNreSBhbmQgaXQgd291bGQg YWxzbyBkZWdyYWRlIHBlcmZvcm1hbmNlcy4gUmF0aGVyIHRoYW4gZG9pbmcgdGhhdCwKd2Ugd2ls bCB0cnkgdG8gYXZvaWQgYW55IG1pc2FsaWduZWQgYWNjZXNzZWQgYnkgdXNpbmcgY29weV9mcm9t L3RvX3VzZXIoKQp3aGljaCBkb2VzIG5vdCBkbyBhbnkgbWlzYWxpZ25lZCBhY2Nlc3Nlcy4gVGhp cyBjYW4gYmUgZG9uZSBvbmx5IGZvcgohQ09ORklHX0hBVkVfRUZGSUNJRU5UX1VOQUxJR05FRF9B Q0NFU1MgYW5kIHRodXMgYWxsb3dzIHRvIG9ubHkgZ2VuZXJhdGUKYSBiaXQgbW9yZSBjb2RlIGZv ciB0aGlzIGNvbmZpZy4KClNpZ25lZC1vZmYtYnk6IENsw6ltZW50IEzDqWdlciA8Y2xlZ2VyQHJp dm9zaW5jLmNvbT4KLS0tCiBhcmNoL3Jpc2N2L2luY2x1ZGUvYXNtL3VhY2Nlc3MuaCB8IDIzICsr KysrKysrKysrKysrKysrKy0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgMTggaW5zZXJ0aW9ucygrKSwg NSBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9hcmNoL3Jpc2N2L2luY2x1ZGUvYXNtL3VhY2Nl c3MuaCBiL2FyY2gvcmlzY3YvaW5jbHVkZS9hc20vdWFjY2Vzcy5oCmluZGV4IDA0NmRlN2NlZDA5 Yy4uZDQ3MmRhNDQ1MGU2IDEwMDY0NAotLS0gYS9hcmNoL3Jpc2N2L2luY2x1ZGUvYXNtL3VhY2Nl c3MuaAorKysgYi9hcmNoL3Jpc2N2L2luY2x1ZGUvYXNtL3VhY2Nlc3MuaApAQCAtMTY5LDggKzE2 OSwxOSBAQCBkbyB7CQkJCQkJCQlcCiAKICNlbmRpZiAvKiBDT05GSUdfNjRCSVQgKi8KIAordW5z aWduZWQgbG9uZyBfX211c3RfY2hlY2sgX19hc21fY29weV90b191c2VyX3N1bV9lbmFibGVkKHZv aWQgX191c2VyICp0bywKKwljb25zdCB2b2lkICpmcm9tLCB1bnNpZ25lZCBsb25nIG4pOwordW5z aWduZWQgbG9uZyBfX211c3RfY2hlY2sgX19hc21fY29weV9mcm9tX3VzZXJfc3VtX2VuYWJsZWQo dm9pZCAqdG8sCisJY29uc3Qgdm9pZCBfX3VzZXIgKmZyb20sIHVuc2lnbmVkIGxvbmcgbik7CisK ICNkZWZpbmUgX19nZXRfdXNlcl9ub2NoZWNrKHgsIF9fZ3VfcHRyLCBsYWJlbCkJCQlcCiBkbyB7 CQkJCQkJCQlcCisJaWYgKCFJU19FTkFCTEVEKENPTkZJR19IQVZFX0VGRklDSUVOVF9VTkFMSUdO RURfQUNDRVNTKSAmJglcCisJICAgICFJU19BTElHTkVEKCh1aW50cHRyX3QpX19ndV9wdHIsIHNp emVvZigqX19ndV9wdHIpKSkgewlcCisJCWlmIChfX2FzbV9jb3B5X2Zyb21fdXNlcl9zdW1fZW5h YmxlZCgmKHgpLCBfX2d1X3B0ciwgc2l6ZW9mKCpfX2d1X3B0cikpKSBcCisJCQlnb3RvIGxhYmVs OwkJCQlcCisJCWJyZWFrOwkJCQkJCVwKKwl9CQkJCQkJCVwKIAlzd2l0Y2ggKHNpemVvZigqX19n dV9wdHIpKSB7CQkJCVwKIAljYXNlIDE6CQkJCQkJCVwKIAkJX19nZXRfdXNlcl9hc20oImxiIiwg KHgpLCBfX2d1X3B0ciwgbGFiZWwpOwlcCkBAIC0yOTcsNiArMzA4LDEzIEBAIGRvIHsJCQkJCQkJ CVwKIAogI2RlZmluZSBfX3B1dF91c2VyX25vY2hlY2soeCwgX19ndV9wdHIsIGxhYmVsKQkJCVwK IGRvIHsJCQkJCQkJCVwKKwlpZiAoIUlTX0VOQUJMRUQoQ09ORklHX0hBVkVfRUZGSUNJRU5UX1VO QUxJR05FRF9BQ0NFU1MpICYmCVwKKwkgICAgIUlTX0FMSUdORUQoKHVpbnRwdHJfdClfX2d1X3B0 ciwgc2l6ZW9mKCpfX2d1X3B0cikpKSB7CVwKKwkJX19pbnR0eXBlKHgpIHZhbCA9IChfX2ludHR5 cGUoeCkpeDsJCQlcCisJCWlmIChfX2FzbV9jb3B5X3RvX3VzZXJfc3VtX2VuYWJsZWQoX19ndV9w dHIsICYodmFsKSwgc2l6ZW9mKCpfX2d1X3B0cikpKSBcCisJCQlnb3RvIGxhYmVsOwkJCQlcCisJ CWJyZWFrOwkJCQkJCVwKKwl9CQkJCQkJCVwKIAlzd2l0Y2ggKHNpemVvZigqX19ndV9wdHIpKSB7 CQkJCVwKIAljYXNlIDE6CQkJCQkJCVwKIAkJX19wdXRfdXNlcl9hc20oInNiIiwgKHgpLCBfX2d1 X3B0ciwgbGFiZWwpOwlcCkBAIC00NTAsMTEgKzQ2OCw2IEBAIHN0YXRpYyBpbmxpbmUgdm9pZCB1 c2VyX2FjY2Vzc19yZXN0b3JlKHVuc2lnbmVkIGxvbmcgZW5hYmxlZCkgeyB9CiAJKHgpID0gKF9f Zm9yY2UgX190eXBlb2ZfXygqKHB0cikpKV9fZ3VfdmFsOwkJCVwKIH0gd2hpbGUgKDApCiAKLXVu c2lnbmVkIGxvbmcgX19tdXN0X2NoZWNrIF9fYXNtX2NvcHlfdG9fdXNlcl9zdW1fZW5hYmxlZCh2 b2lkIF9fdXNlciAqdG8sCi0JY29uc3Qgdm9pZCAqZnJvbSwgdW5zaWduZWQgbG9uZyBuKTsKLXVu c2lnbmVkIGxvbmcgX19tdXN0X2NoZWNrIF9fYXNtX2NvcHlfZnJvbV91c2VyX3N1bV9lbmFibGVk KHZvaWQgKnRvLAotCWNvbnN0IHZvaWQgX191c2VyICpmcm9tLCB1bnNpZ25lZCBsb25nIG4pOwot CiAjZGVmaW5lIHVuc2FmZV9jb3B5X3RvX3VzZXIoX2RzdCwgX3NyYywgX2xlbiwgbGFiZWwpCQkJ XAogCWlmIChfX2FzbV9jb3B5X3RvX3VzZXJfc3VtX2VuYWJsZWQoX2RzdCwgX3NyYywgX2xlbikp CQlcCiAJCWdvdG8gbGFiZWw7Ci0tIAoyLjQ5LjAKCgpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGludXgtcmlz Y3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFu L2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg==