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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D5AFC43219 for ; Tue, 28 Sep 2021 18:48:13 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 3F0A461359 for ; Tue, 28 Sep 2021 18:48:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3F0A461359 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id D5E8F4B0CB; Tue, 28 Sep 2021 14:48:12 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@google.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BjNnzODu7mhN; Tue, 28 Sep 2021 14:48:11 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id BA2EF4B0DD; Tue, 28 Sep 2021 14:48:11 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 3E6444B0CB for ; Tue, 28 Sep 2021 14:48:10 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mjbdngSHxL3J for ; Tue, 28 Sep 2021 14:48:09 -0400 (EDT) Received: from mail-qk1-f201.google.com (mail-qk1-f201.google.com [209.85.222.201]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 3FD214B0B6 for ; Tue, 28 Sep 2021 14:48:09 -0400 (EDT) Received: by mail-qk1-f201.google.com with SMTP id s18-20020a05620a255200b00433885d4fa7so99429375qko.4 for ; Tue, 28 Sep 2021 11:48:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=O4Pf1pw7IvGHNe4ix1iHuqBRwQM1rzQrtDbARj3VD7U=; b=mMMdCpyyOz9jvXo89g2rQ6b6Nh948to1i5C3FcPkKL21khzd0SJnqxQR4pkyDMx9wa s0O07AEGyGZovHoZMQWntxZ96N3sLH8ged8VBIMRL3FOXckb8dsewQN2qvTmew6Mg8p0 Oolh9VInTIJlL5VZaT2EXghb9fy5iK+ewpnw//GSA/9/OPPM46+sSBbZ8QpqsfcCDI0L hnzvrBsCQu6n04TqU7WBQFmmglwGBFckLdXNTpAVz4Yjxd4GOGyU9lwF+ghdGzg0WUiz iB4cEZyX1mFt8GkSsJB84Cquma2SBzV8D+IDLTJmPek45HdWNKnpiemLZlZf80Badjv/ 6dBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=O4Pf1pw7IvGHNe4ix1iHuqBRwQM1rzQrtDbARj3VD7U=; b=bFuwX30pC/yEjISa/WYMjQqluvymL+v91Lj68MbhwCQ+/SZUmu7KAeCMtPWs38QhjC TEM4nR3IGh8kbunYezgjKsjiVCAt4a5xRa0mSt3fTp4uq/YW1pBlZNQLBviVXnbVZCmB O/5eajzV8c9K29Z573LPBsx0kmE0SU3FzOJgC9u4HZ4cE6KM1MtGaaAAx9kIV7PSmRla KPeE0nIJU4Y0NJ6SP37dRId4YF22h8uA2HCDlQdz4aO5sklYSecF0R4WlFvQHVcaZwj6 jEFmtoQFFSq7KCos9Yl4WBplS2Zot59XU9Umqjyo+80YuT9LKzZpqQaHKlu2QkJneAyF 3Tnw== X-Gm-Message-State: AOAM533SLNlhT3aSrODmFkt7AfmBGw7jJA3s/Tqg6jJoy2IidcQkLI5p HYfcyenISL0C1LIGRtQefS6IdxEyLT2arA== X-Google-Smtp-Source: ABdhPJx5jNcltOLTjTdhqpjP1Bl4mvZcRKZjKlWdl3zBsvmwrNHy7AtNptUT7fjtgYO1crNJzy1+li0z/78wjg== X-Received: from ricarkol2.c.googlers.com ([fda3:e722:ac3:cc00:24:72f4:c0a8:62fe]) (user=ricarkol job=sendgmr) by 2002:ad4:4a02:: with SMTP id m2mr164765qvz.8.1632854888735; Tue, 28 Sep 2021 11:48:08 -0700 (PDT) Date: Tue, 28 Sep 2021 11:47:55 -0700 In-Reply-To: <20210928184803.2496885-1-ricarkol@google.com> Message-Id: <20210928184803.2496885-2-ricarkol@google.com> Mime-Version: 1.0 References: <20210928184803.2496885-1-ricarkol@google.com> X-Mailer: git-send-email 2.33.0.685.g46640cef36-goog Subject: [PATCH v3 01/10] kvm: arm64: vgic: Introduce vgic_check_iorange From: Ricardo Koller To: kvm@vger.kernel.org, maz@kernel.org, kvmarm@lists.cs.columbia.edu, drjones@redhat.com, eric.auger@redhat.com, alexandru.elisei@arm.com Cc: pshier@google.com, Paolo Bonzini , shuah@kernel.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Add the new vgic_check_iorange helper that checks that an iorange is sane: the start address and size have valid alignments, the range is within the addressable PA range, start+size doesn't overflow, and the start wasn't already defined. No functional change. Signed-off-by: Ricardo Koller --- arch/arm64/kvm/vgic/vgic-kvm-device.c | 22 ++++++++++++++++++++++ arch/arm64/kvm/vgic/vgic.h | 4 ++++ 2 files changed, 26 insertions(+) diff --git a/arch/arm64/kvm/vgic/vgic-kvm-device.c b/arch/arm64/kvm/vgic/vgic-kvm-device.c index 7740995de982..f714aded67b2 100644 --- a/arch/arm64/kvm/vgic/vgic-kvm-device.c +++ b/arch/arm64/kvm/vgic/vgic-kvm-device.c @@ -29,6 +29,28 @@ int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr, return 0; } +int vgic_check_iorange(struct kvm *kvm, phys_addr_t *ioaddr, + phys_addr_t addr, phys_addr_t alignment, + phys_addr_t size) +{ + int ret; + + ret = vgic_check_ioaddr(kvm, ioaddr, addr, alignment); + if (ret) + return ret; + + if (!IS_ALIGNED(size, alignment)) + return -EINVAL; + + if (addr + size < addr) + return -EINVAL; + + if (addr + size > kvm_phys_size(kvm)) + return -E2BIG; + + return 0; +} + static int vgic_check_type(struct kvm *kvm, int type_needed) { if (kvm->arch.vgic.vgic_model != type_needed) diff --git a/arch/arm64/kvm/vgic/vgic.h b/arch/arm64/kvm/vgic/vgic.h index 14a9218641f5..c4df4dcef31f 100644 --- a/arch/arm64/kvm/vgic/vgic.h +++ b/arch/arm64/kvm/vgic/vgic.h @@ -175,6 +175,10 @@ void vgic_irq_handle_resampling(struct vgic_irq *irq, int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr, phys_addr_t addr, phys_addr_t alignment); +int vgic_check_iorange(struct kvm *kvm, phys_addr_t *ioaddr, + phys_addr_t addr, phys_addr_t alignment, + phys_addr_t size); + void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu); void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr); void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr); -- 2.33.0.685.g46640cef36-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm