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[2001:1868:205::9]) by mx.google.com with ESMTPS id d22si8427146pfk.24.2016.09.23.08.47.17 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 23 Sep 2016 08:47:17 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com; spf=pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org; dmarc=fail (p=NONE dis=NONE) header.from=gmail.com Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bnSg7-0003Ag-PU; Fri, 23 Sep 2016 15:46:19 +0000 Received: from mail-pa0-x243.google.com ([2607:f8b0:400e:c03::243]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bnSfT-0002wM-7b for linux-arm-kernel@lists.infradead.org; Fri, 23 Sep 2016 15:45:40 +0000 Received: by mail-pa0-x243.google.com with SMTP id my20so5248947pab.3 for ; Fri, 23 Sep 2016 08:45:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=MMTC/XxF5nDGB/dp3A6Q47VaDw8XBH3uae907nJBy9I=; b=DfBOGEE4cnu87lJvFfwN0tVb2kzAWnkDx0ddJHqI3lad4BVm4dFI41HWrfO6cyZZ5U XPC2JL7Io57iv3Ty7kTWPK5SaKkLTTkXcRrGpywLJFNYd9M2Jy1yJH1aNB3nMnwdocZn MzY7S8cTuWttOAXyoC7LkHwjIvJ5H0SZtr0IK4ZCXSzswngGqEAQDBZvxE6L7ZkZwl3i bKdBqct6bo2LX2Yyq0YdoTMUIRdW9nh0e8PHtLFzLZ77NySVXoxa23OaeGq8HFVz1eD8 6MhMRBbE0cGQNGkbgKOq6WXcT8IrBX5vWamIYFFXIo6HIxGFs2ZEqRUAvnKm7WSbbEfV mhXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=MMTC/XxF5nDGB/dp3A6Q47VaDw8XBH3uae907nJBy9I=; b=IxhndYX/3X4risfGH6r6UlXooUxrZF1fai6mqCRNh72YYKAUA0SPPaN6xDpCCDSD1F RZXspfdysuQRlKsU+y2UQLVW/VOCVoyvG8I/251EfBL0OEuGvKoslJPhqRsWAnqqcPiW HntCpCY7nmK73iYeog4A6o6TZBjqdZArU+6jCRIPYg4iADhISZyho1xBbI4ZZb2iVUAr OCTN0Y0wIJi9u2/bSaKk0+3IzVnwcNGkNNhNWYUr1A4LlBs2GyJEg98Rc7m+TxVTdyX0 RME24z8cdK7/SBhP9y+LYTq6pXAnKZkX+Eu1RtGySWp5o8Nf2DeG4j0roVUg+J9HAWgD Cb4g== X-Gm-Message-State: AE9vXwPA8QgP6a9qLHBdglDtE2LbKUigqSL7QNlvGRkfUBy2UuE9cizxuv2ZoeZ/9Pkl9w== X-Received: by 10.66.10.170 with SMTP id j10mr13451658pab.3.1474645518237; Fri, 23 Sep 2016 08:45:18 -0700 (PDT) Received: from localhost.localdomain ([14.140.2.178]) by smtp.gmail.com with ESMTPSA id r77sm12534207pfg.16.2016.09.23.08.45.15 (version=TLS1_1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 23 Sep 2016 08:45:17 -0700 (PDT) From: vijay.kilari@gmail.com To: marc.zyngier@arm.com, christoffer.dall@linaro.org, peter.maydell@linaro.org Subject: [PATCH v7 3/7] arm/arm64: vgic: Introduce find_reg_by_id() Date: Fri, 23 Sep 2016 21:14:38 +0530 Message-Id: <1474645482-28131-4-git-send-email-vijay.kilari@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1474645482-28131-1-git-send-email-vijay.kilari@gmail.com> References: <1474645482-28131-1-git-send-email-vijay.kilari@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160923_084539_375738_B2F4A7C5 X-CRM114-Status: GOOD ( 12.88 ) X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c03:0:0:0:243 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (vijay.kilari[at]gmail.com) -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: p.fedin@samsung.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Vijaya Kumar K MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org From: Vijaya Kumar K In order to implement vGICv3 CPU interface access, we will need to perform table lookup of system registers. We would need both index_to_params() and find_reg() exported for that purpose, but instead we export a single function which combines them both. Signed-off-by: Pavel Fedin Signed-off-by: Vijaya Kumar K Reviewed-by: Andre Przywara Acked-by: Christoffer Dall --- arch/arm64/kvm/sys_regs.c | 22 +++++++++++++++------- arch/arm64/kvm/sys_regs.h | 4 ++++ 2 files changed, 19 insertions(+), 7 deletions(-) -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index e51367d..87ebe35 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1794,6 +1794,17 @@ static bool index_to_params(u64 id, struct sys_reg_params *params) } } +const struct sys_reg_desc *find_reg_by_id(u64 id, + struct sys_reg_params *params, + const struct sys_reg_desc table[], + unsigned int num) +{ + if (!index_to_params(id, params)) + return NULL; + + return find_reg(params, table, num); +} + /* Decode an index value, and find the sys_reg_desc entry. */ static const struct sys_reg_desc *index_to_sys_reg_desc(struct kvm_vcpu *vcpu, u64 id) @@ -1921,10 +1932,8 @@ static int get_invariant_sys_reg(u64 id, void __user *uaddr) struct sys_reg_params params; const struct sys_reg_desc *r; - if (!index_to_params(id, ¶ms)) - return -ENOENT; - - r = find_reg(¶ms, invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs)); + r = find_reg_by_id(id, ¶ms, invariant_sys_regs, + ARRAY_SIZE(invariant_sys_regs)); if (!r) return -ENOENT; @@ -1938,9 +1947,8 @@ static int set_invariant_sys_reg(u64 id, void __user *uaddr) int err; u64 val = 0; /* Make sure high bits are 0 for 32-bit regs */ - if (!index_to_params(id, ¶ms)) - return -ENOENT; - r = find_reg(¶ms, invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs)); + r = find_reg_by_id(id, ¶ms, invariant_sys_regs, + ARRAY_SIZE(invariant_sys_regs)); if (!r) return -ENOENT; diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h index dbbb01c..9c6ffd0 100644 --- a/arch/arm64/kvm/sys_regs.h +++ b/arch/arm64/kvm/sys_regs.h @@ -136,6 +136,10 @@ static inline int cmp_sys_reg(const struct sys_reg_desc *i1, return i1->Op2 - i2->Op2; } +const struct sys_reg_desc *find_reg_by_id(u64 id, + struct sys_reg_params *params, + const struct sys_reg_desc table[], + unsigned int num); #define Op0(_x) .Op0 = _x #define Op1(_x) .Op1 = _x