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=-16.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 28F66C4338F for ; Fri, 20 Aug 2021 07:52:36 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 9810161042 for ; Fri, 20 Aug 2021 07:52:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9810161042 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 14A704B0C2; Fri, 20 Aug 2021 03:52:35 -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 c6lxelQYIvgR; Fri, 20 Aug 2021 03:52:31 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 213414B0EA; Fri, 20 Aug 2021 03:52:31 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 8C2094B087 for ; Thu, 19 Aug 2021 18:34:13 -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 rMKyDRj1HwaZ for ; Thu, 19 Aug 2021 18:34:12 -0400 (EDT) Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 87EDD4B0E7 for ; Thu, 19 Aug 2021 18:34:12 -0400 (EDT) Received: by mail-pj1-f73.google.com with SMTP id r13-20020a17090a4dcdb0290176dc35536aso3113175pjl.8 for ; Thu, 19 Aug 2021 15:34:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=bOOZsm5TnyY2OqO/UzAmnygEQIpds7n6pzsOsSOKjBo=; b=erQKmqzaST94afktv4i+np16BCzAXEK8mkPkEZqUXWbY2IpGlSRHpoHtvLy20knfB5 MUa8wp5F7LZCR2p6/9cEOCAK204tRAaWU8Mt4CZxiiAEVQMxrttwaZDW2IVdfs5oStPm XNE8g1p4Pw2Zh408n+CKCdw7JRte0Yb3UZD7swn8yWDhv1GF87O20lxAJhlxkWVEKI8A EuDbz/VdjS8po5swSsNyTmYYrJ3WzOiAetCp4cz+HcHI3aIb3l/lGHcVuHh5lAFaRhf3 AGGbkZ975qoY1uuyFtWjQ20PyjzCR2QDiQ/G7f+Xn3t+wH/tZIdPvlkEJUNuzIZajPnK I+Ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=bOOZsm5TnyY2OqO/UzAmnygEQIpds7n6pzsOsSOKjBo=; b=D3dkGYouUn5FSnBmx7nRyhAOiEvuXK7ip1chUSk2bMhMxUoAokoaZmTevLcle3YKr9 F0GEpV0E7UeCAjWseyCsQMHFCYq6VYaHAThC3eSGIuQ3dV4PaFICgx2NyCPYsFy3HQTM Gq1fJfEwGJHISaur96yIyFRqajUYnnvmprG3/D+nfQAKVZtiezIZDU6myAGJPgHP6ef2 Y5v7i2nQsBkLQigcPQh8XFZcEp9PkWhU50s4rbizeoagQDrG059M4qfpFG96Q87fM3ie Dbeh3czf9s/X1I/9SJotE6/KrehGQwM2/Tr8NzJtczOE05t+l+yfZZGB/QD+pN+IgQBl RhuQ== X-Gm-Message-State: AOAM532Zb1GFUCtTCaPMsr4zjKIJlrZO+qldlONVbsL9I+IhPV9V1Pbk GOuWiZL24EnDiYyRU2QVVlebzOzxxTid X-Google-Smtp-Source: ABdhPJznI71qPa7ZgpjTnaFxnj7Q9vZ3kYUNCCBWfozdXUGInR1VVtDc+5il7yJQk0NRx7nt4l7r7n7cAXKl X-Received: from rananta-virt.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:1bcc]) (user=rananta job=sendgmr) by 2002:a17:90b:396:: with SMTP id ga22mr142795pjb.0.1629412451137; Thu, 19 Aug 2021 15:34:11 -0700 (PDT) Date: Thu, 19 Aug 2021 22:34:06 +0000 Message-Id: <20210819223406.1132426-1-rananta@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.33.0.rc2.250.ged5fa647cd-goog Subject: [PATCH] KVM: arm64: Ratelimit error log during guest debug exception From: Raghavendra Rao Ananta To: Marc Zyngier , Alexandru Elisei , Suzuki K Poulose X-Mailman-Approved-At: Fri, 20 Aug 2021 03:52:30 -0400 Cc: Catalin Marinas , Peter Shier , linux-kernel@vger.kernel.org, Raghavendra Rao Anata , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.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 Potentially, the guests could trigger a debug exception that's outside the exception class range. This could lead to an excessive syslog flooding. Hence, ratelimit the error message. Signed-off-by: Raghavendra Rao Ananta --- arch/arm64/kvm/handle_exit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c index 04ebab299aa4..c7cec7ffe93c 100644 --- a/arch/arm64/kvm/handle_exit.c +++ b/arch/arm64/kvm/handle_exit.c @@ -134,7 +134,7 @@ static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu) case ESR_ELx_EC_BRK64: break; default: - kvm_err("%s: un-handled case esr: %#08x\n", + kvm_pr_unimpl("%s: un-handled case esr: %#08x\n", __func__, (unsigned int) esr); ret = -1; break; -- 2.33.0.rc2.250.ged5fa647cd-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm