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 2B049EB64D8 for ; Thu, 22 Jun 2023 17:36:32 +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: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:In-Reply-To:References: List-Owner; bh=AeM0x8+Wq/THVM1gwJyfzCWnu2LCidogeGx5QsQM5BY=; b=chJbIUHPDeELPI 3ewZxNMHl+S6OSg+49nbOrLFTSCwaEBqikmUryMIeDxTw+J2u974IQJ0Ky5Al3//j8m/cb4sPtt6P 2EW/4Vacx2ssEhrneb6BBN0Ei2VFBqDWoP3Ptps5CylOnbSrMJWG+tiD4QxlHqKXf9jobeXdNFytU atqBXKkHPQYL61b9YNusLSRlBon1wUNF+oeRUd+dOUDAWZgtpfakYWAGr7x7fmQ+BM/he3aZpXRt1 cxGOq7laPXST24UaNReopwgCT1GngP8VkTZnI70FYxSn3SsM5eS3Xqa+z1cun5h1QMO2vthQTqHe9 mqW9mit0lPeOuS4jaLnA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qCOEL-001LrM-2P; Thu, 22 Jun 2023 17:36:25 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qCOEI-001Lqy-30 for linux-riscv@lists.infradead.org; Thu, 22 Jun 2023 17:36:24 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 433E76189F; Thu, 22 Jun 2023 17:36:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 46613C433C0; Thu, 22 Jun 2023 17:36:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1687455381; bh=/OtlEWvMky8FwHoyDb4NvG0us2YcJyx1FBYe9wivhIo=; h=From:To:Cc:Subject:Date:From; b=SDP/87huKee/Zv1UWW27EOV4jrMoXFTtOyzBCCVV2HyEgaNUlEEUByq9LhmSB4cQK akKVNj+YyNFLugitTB+lUVjf2avCXVwEpZeOLECHKo91RYsbYxvVrgshCGdYAZSGn6 Pcbf/v/6u2sZGEpbffUiKeA3Vux7ZXH88rKG/+xBRKsxo3gfRv9pmhjl3KaRCQ7GGB GT+jJOmenD9WBi2fLUfivHK5Jupp7GHhbEDJnkSS73TJVm4wegD6JxV9lNB/a+XeeA iFHcQOnUsZswGhaDS+pRpwrShuald9jYkTRJ4R65G/STQ1uWc06QiHga7mojE0upT+ VoQDDDWWKH93g== From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= To: Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv@lists.infradead.org Cc: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-kernel@vger.kernel.org, linux@rivosinc.com, Palmer Dabbelt , =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= , Darius Rad , Andy Chiu Subject: [PATCH] riscv: Discard vector state on syscalls Date: Thu, 22 Jun 2023 19:36:13 +0200 Message-Id: <20230622173613.30722-1-bjorn@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230622_103623_080063_FBF4BA7B X-CRM114-Status: GOOD ( 13.69 ) 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 RnJvbTogQmrDtnJuIFTDtnBlbCA8Ympvcm5Acml2b3NpbmMuY29tPgoKVGhlIFJJU0MtViB2ZWN0 b3Igc3BlY2lmaWNhdGlvbiBzdGF0ZXM6CiAgRXhlY3V0aW5nIGEgc3lzdGVtIGNhbGwgY2F1c2Vz IGFsbCBjYWxsZXItc2F2ZWQgdmVjdG9yIHJlZ2lzdGVycwogICh2MC12MzEsIHZsLCB2dHlwZSkg YW5kIHZzdGFydCB0byBiZWNvbWUgdW5zcGVjaWZpZWQuCgpUaGUgdmVjdG9yIHJlZ2lzdGVycyBh cmUgY2xlYXJlZCwgdmlsbCBpcyBzZXQgKGludmFsaWQpLCBhbmQgdGhlCnZlY3RvciBzdGF0dXMg aXMgc2V0IHRvIEluaXRpYWwuCgpUaGF0IHdheSB3ZSBjYW4gcHJldmVudCB1c2Vyc3BhY2UgZnJv bSBhY2NpZGVudGFsbHkgcmVseWluZyBvbiB0aGUKc3RhdGVkIHNhdmUuCgpSw6ltaSBwb2ludGVk IG91dCBbMV0gdGhhdCBjbGVhcmluZyB0aGUgcmVnaXN0ZXJzIG1pZ2h0IGJlIHN1cGVyZmx1b3Vz LAphbmQgc2V0dGluZyB2aWxsIGlzIHN1ZmZpY2llbnQuCgpMaW5rOiBodHRwczovL2xvcmUua2Vy bmVsLm9yZy9saW51eC1yaXNjdi8xMjc4NDMyNi45VVBQSzNNQWVCQGJhc2lsZS5yZW1sYWIubmV0 LyAjIFsxXQpTdWdnZXN0ZWQtYnk6IFBhbG1lciBEYWJiZWx0IDxwYWxtZXJAcml2b3NpbmMuY29t PgpTdWdnZXN0ZWQtYnk6IFLDqW1pIERlbmlzLUNvdXJtb250IDxyZW1pQHJlbWxhYi5uZXQ+ClNp Z25lZC1vZmYtYnk6IEJqw7ZybiBUw7ZwZWwgPGJqb3JuQHJpdm9zaW5jLmNvbT4KLS0tCgpJIGZp Z3VyZWQgSSdkIHNlbnQgb3V0IGEgcHJvcGVyIHBhdGNoLiBJIGxpa2UgQW5keSdzIG9wdGltaXph dGlvbgpwYXRjaCwgYnV0IFRCSCBJIHRoaW5rIHdlIHNob3VsZCBkbyB0aGF0IGFzIGEgZm9sbG93 IHVwLgoKQXMgUsOpbWkgcG9pbnRlZCBvdXQsIHRoZSBjbGVhcmluZyBtaWdodCBiZSBvcHRlZCBv dXQsIGJ1dCBJIGxlZnQgaXQgaW4KaGVyZS4KCgpCasO2cm4KCi0tLQogYXJjaC9yaXNjdi9pbmNs dWRlL2FzbS92ZWN0b3IuaCB8IDI1ICsrKysrKysrKysrKysrKysrKysrKysrKysKIGFyY2gvcmlz Y3Yva2VybmVsL3RyYXBzLmMgICAgICAgfCAgMiArKwogMiBmaWxlcyBjaGFuZ2VkLCAyNyBpbnNl cnRpb25zKCspCgpkaWZmIC0tZ2l0IGEvYXJjaC9yaXNjdi9pbmNsdWRlL2FzbS92ZWN0b3IuaCBi L2FyY2gvcmlzY3YvaW5jbHVkZS9hc20vdmVjdG9yLmgKaW5kZXggMDRjMGIwN2JmNmNkLi42OTJj ZTU1ZTRhNjkgMTAwNjQ0Ci0tLSBhL2FyY2gvcmlzY3YvaW5jbHVkZS9hc20vdmVjdG9yLmgKKysr IGIvYXJjaC9yaXNjdi9pbmNsdWRlL2FzbS92ZWN0b3IuaApAQCAtMTYzLDYgKzE2MywzMCBAQCBz dGF0aWMgaW5saW5lIHZvaWQgX19zd2l0Y2hfdG9fdmVjdG9yKHN0cnVjdCB0YXNrX3N0cnVjdCAq cHJldiwKIHZvaWQgcmlzY3Zfdl92c3RhdGVfY3RybF9pbml0KHN0cnVjdCB0YXNrX3N0cnVjdCAq dHNrKTsKIGJvb2wgcmlzY3Zfdl92c3RhdGVfY3RybF91c2VyX2FsbG93ZWQodm9pZCk7CiAKK3N0 YXRpYyBpbmxpbmUgdm9pZCByaXNjdl92X3ZzdGF0ZV9kaXNjYXJkKHN0cnVjdCBwdF9yZWdzICpy ZWdzKQoreworCXVuc2lnbmVkIGxvbmcgdmwsIHZ0eXBlX2ludmFsID0gMVVMIDw8IChCSVRTX1BF Ul9MT05HIC0gMSk7CisKKwlpZiAoIXJpc2N2X3ZfdnN0YXRlX3F1ZXJ5KHJlZ3MpKQorCQlyZXR1 cm47CisKKwlyaXNjdl92X2VuYWJsZSgpOworCWFzbSB2b2xhdGlsZSAoCisJCSIub3B0aW9uIHB1 c2hcblx0IgorCQkiLm9wdGlvbiBhcmNoLCArdlxuXHQiCisJCSJ2c2V0dmxpCSUwLCB4MCwgZTgs IG04LCB0YSwgbWFcblx0IgorCQkidm12LnYuaQl2MCwgMFxuXHQiCisJCSJ2bXYudi5pCXY4LCAw XG5cdCIKKwkJInZtdi52LmkJdjE2LCAwXG5cdCIKKwkJInZtdi52LmkJdjI0LCAwXG5cdCIKKwkJ InZzZXR2bAkJJTAsIHgwLCAlMVxuXHQiCisJCSIub3B0aW9uIHBvcFxuXHQiCisJCTogIj0mciIg KHZsKSA6ICJyIiAodnR5cGVfaW52YWwpIDogIm1lbW9yeSIpOworCXJpc2N2X3ZfZGlzYWJsZSgp OworCisJcmlzY3Zfdl92c3RhdGVfb24ocmVncyk7Cit9CisKICNlbHNlIC8qICEgQ09ORklHX1JJ U0NWX0lTQV9WICAqLwogCiBzdHJ1Y3QgcHRfcmVnczsKQEAgLTE3OCw2ICsyMDIsNyBAQCBzdGF0 aWMgaW5saW5lIGJvb2wgcmlzY3Zfdl92c3RhdGVfY3RybF91c2VyX2FsbG93ZWQodm9pZCkgeyBy ZXR1cm4gZmFsc2U7IH0KICNkZWZpbmUgX19zd2l0Y2hfdG9fdmVjdG9yKF9fcHJldiwgX19uZXh0 KQlkbyB7fSB3aGlsZSAoMCkKICNkZWZpbmUgcmlzY3Zfdl92c3RhdGVfb2ZmKHJlZ3MpCQlkbyB7 fSB3aGlsZSAoMCkKICNkZWZpbmUgcmlzY3Zfdl92c3RhdGVfb24ocmVncykJCQlkbyB7fSB3aGls ZSAoMCkKKyNkZWZpbmUgcmlzY3Zfdl92c3RhdGVfZGlzY2FyZChyZWdzKQkJZG8ge30gd2hpbGUg KDApCiAKICNlbmRpZiAvKiBDT05GSUdfUklTQ1ZfSVNBX1YgKi8KIApkaWZmIC0tZ2l0IGEvYXJj aC9yaXNjdi9rZXJuZWwvdHJhcHMuYyBiL2FyY2gvcmlzY3Yva2VybmVsL3RyYXBzLmMKaW5kZXgg MDVmZmRjZDE0MjRlLi4wMGM2OGI1N2ZmODggMTAwNjQ0Ci0tLSBhL2FyY2gvcmlzY3Yva2VybmVs L3RyYXBzLmMKKysrIGIvYXJjaC9yaXNjdi9rZXJuZWwvdHJhcHMuYwpAQCAtMjk1LDYgKzI5NSw4 IEBAIGFzbWxpbmthZ2UgX192aXNpYmxlIF9fdHJhcF9zZWN0aW9uIHZvaWQgZG9fdHJhcF9lY2Fs bF91KHN0cnVjdCBwdF9yZWdzICpyZWdzKQogCQlyZWdzLT5lcGMgKz0gNDsKIAkJcmVncy0+b3Jp Z19hMCA9IHJlZ3MtPmEwOwogCisJCXJpc2N2X3ZfdnN0YXRlX2Rpc2NhcmQocmVncyk7CisKIAkJ c3lzY2FsbCA9IHN5c2NhbGxfZW50ZXJfZnJvbV91c2VyX21vZGUocmVncywgc3lzY2FsbCk7CiAK IAkJaWYgKHN5c2NhbGwgPCBOUl9zeXNjYWxscykKCmJhc2UtY29tbWl0OiA0NjgxZGFjYWRlZWZh NWNhNjAxN2UwMDczNmFkYzFkN2RjOTYzYzZhCi0tIAoyLjM5LjIKCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWlsaW5nIGxpc3QK bGludXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg==