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 X-Spam-Level: X-Spam-Status: No, score=-17.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60C1FC4338F for ; Thu, 19 Aug 2021 13:47:28 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 237CE610A0 for ; Thu, 19 Aug 2021 13:47:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 237CE610A0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=Viajzd0aEDBMdMP21llPX34AwFJC5HN+rD//jOF2ML8=; b=IFNXZfowy9vqx5 PWUPFQKzVzUF0cd1KI0r57DfqIFYTpNj52KiSZra2JZRTLFTzhOxYHuVFTwwgwvXpdfRN2UlSa7J3 gNP8rFw9KVzNBSj9sUOVb6FywtLXKTv5PcObXOO6i85cuf4B1gX71BahlOSlFsP8zphC40HVN2jS2 Y42zNCWlGDxVzoE0EE12KkZI8PbKqtVjgtaoZsp5EriOMM3Hx4LbM2xGaYibfjT/eooT0r1Qlb9W6 70QDKbQDs7XMneznPON5E5klu3Mb7c6V6MqwmuOGIStI9uB4nPovo2UsF+YxZbfq2bCnqvceqetqF Fk3Ey0GQxqEkxXcFJP2Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGiM3-008TY5-Q2; Thu, 19 Aug 2021 13:45:12 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGiLi-008TTN-UH for linux-arm-kernel@lists.infradead.org; Thu, 19 Aug 2021 13:44:52 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 24E35610CF; Thu, 19 Aug 2021 13:44:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629380690; bh=P9D9cwlgbSovWsNhAd0cmLLMjn/HWvVms2D0cvjA/Tc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gj2TwTRXRdiznyi2sE8s4CCocNfoa/xnU/apq89Lt2BfwT3WH4VyRH5ZOlEV4lMHd fAkewHnuRZzhCeFBMSekRgcu2j80Hm+DMwgYsRyVvOmaq8ts6w1sDMBr0CtQfWc2OO W4eh21+XeURBWJ/27EOpqShCwEW7dtfWdXs1KXk8GGdioK0xJGhHcyc6W8MtexoEO7 DhuvOCL4cgLpp0hzzMuQEKzk2iUfKk+Lt1f7dfez9GNs0jTYD5Wx/ad7Gvs5niHGP9 8p47uN3jv0GHsINhsV8u51ADuW9HrHXdLvqCTIlOUWqlw5j80bl0MIG4qd05oc0fnJ 8f2PI7hP6BB9Q== From: Mark Brown To: Catalin Marinas , Will Deacon Cc: linux-arm-kernel@lists.infradead.org, Mark Brown Subject: [PATCH v1 2/6] kselftest/arm64: signal: Support signal frames with SVE register data Date: Thu, 19 Aug 2021 14:42:41 +0100 Message-Id: <20210819134245.13935-3-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210819134245.13935-1-broonie@kernel.org> References: <20210819134245.13935-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2541; h=from:subject; bh=P9D9cwlgbSovWsNhAd0cmLLMjn/HWvVms2D0cvjA/Tc=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBhHl/QOTS5xMYFK8XKMrsH3j3LfraVYmQQYF5hAA41 mRiOc72JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYR5f0AAKCRAk1otyXVSH0K7SB/ 418FBA4yhNOKqkUCu1sTfcesA4xnL655n1kHRuBc83SXNZ7PK+bule/aOkKEZxbEXvDBbXt6AW1Voa KhDbcjemTd6b6PR+DGy7DZ7A4bpROMvekgrdELzdmoL/gsRKz3UuZrnqdCNsw53QOl8HPg+zncEo/x REPCWRdG7sztdV107SNhOrLGHj8Du5YcIzVN+QscnVLMN0JoljD7tS2pEbSYzI1l0dup79kMbDKRaS NqZtuhLck/jBBMKCh8BeJ+mufxVw4Gejs4iHiRbdSK5+N7AHpfvzbJzimJXENK85asRQre/T55Nd/O Jg0sT+/nOblJU9+Nshme6HcnIpZVse X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210819_064451_055948_F4E31CB3 X-CRM114-Status: GOOD ( 13.93 ) X-BeenThere: linux-arm-kernel@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="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org A signal frame with SVE may validly either be a bare struct sve_context or a struct sve_context followed by vector length dependent register data. Support either in the generic helpers for the signal tests, and while we're at it validate the SVE vector length reported. Signed-off-by: Mark Brown --- .../arm64/signal/testcases/testcases.c | 34 +++++++++++++++++-- 1 file changed, 31 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.c b/tools/testing/selftests/arm64/signal/testcases/testcases.c index 61ebcdf63831..8c2a57fc2f9c 100644 --- a/tools/testing/selftests/arm64/signal/testcases/testcases.c +++ b/tools/testing/selftests/arm64/signal/testcases/testcases.c @@ -50,12 +50,38 @@ bool validate_extra_context(struct extra_context *extra, char **err) return true; } +bool validate_sve_context(struct sve_context *sve, char **err) +{ + /* Size will be rounded up to a multiple of 16 bytes */ + size_t regs_size + = ((SVE_SIG_CONTEXT_SIZE(sve_vq_from_vl(sve->vl)) + 15) / 16) * 16; + + if (!sve || !err) + return false; + + /* Either a bare sve_context or a sve_context followed by regs data */ + if ((sve->head.size != sizeof(struct sve_context)) && + (sve->head.size != regs_size)) { + *err = "bad size for SVE context"; + return false; + } + + if (!sve_vl_valid(sve->vl)) { + *err = "SVE VL invalid"; + + return false; + } + + return true; +} + bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) { bool terminated = false; size_t offs = 0; int flags = 0; struct extra_context *extra = NULL; + struct sve_context *sve = NULL; struct _aarch64_ctx *head = (struct _aarch64_ctx *)uc->uc_mcontext.__reserved; @@ -90,9 +116,8 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) case SVE_MAGIC: if (flags & SVE_CTX) *err = "Multiple SVE_MAGIC"; - else if (head->size != - sizeof(struct sve_context)) - *err = "Bad size for sve_context"; + /* Size is validated in validate_sve_context() */ + sve = (struct sve_context *)head; flags |= SVE_CTX; break; case EXTRA_MAGIC: @@ -137,6 +162,9 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) if (flags & EXTRA_CTX) if (!validate_extra_context(extra, err)) return false; + if (flags & SVE_CTX) + if (!validate_sve_context(sve, err)) + return false; head = GET_RESV_NEXT_HEAD(head); } -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel