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{ "id": 811643, "url": "http://patchwork.ozlabs.org/api/covers/811643/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/cover/1504882339-42520-1-git-send-email-christoffer.dall@linaro.org/", "project": { "id": 19, "url": "http://patchwork.ozlabs.org/api/projects/19/?format=api", "name": "Linux IMX development", "link_name": "linux-imx", "list_id": "linux-imx-kernel.lists.patchwork.ozlabs.org", "list_email": "linux-imx-kernel@lists.patchwork.ozlabs.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1504882339-42520-1-git-send-email-christoffer.dall@linaro.org>", "list_archive_url": null, "date": "2017-09-08T14:52:17", "name": "[0/2] Fix preemption issues with kvm_arm_get_running_vcpu", "submitter": { "id": 26352, "url": "http://patchwork.ozlabs.org/api/people/26352/?format=api", "name": "Christoffer Dall", "email": "christoffer.dall@linaro.org" }, "mbox": "http://patchwork.ozlabs.org/project/linux-imx/cover/1504882339-42520-1-git-send-email-christoffer.dall@linaro.org/mbox/", "series": [ { "id": 2231, "url": "http://patchwork.ozlabs.org/api/series/2231/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/list/?series=2231", "date": "2017-09-08T14:52:17", "name": "Fix preemption issues with kvm_arm_get_running_vcpu", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/2231/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/811643/comments/", "headers": { "Return-Path": "<linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming-imx@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming-imx@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.infradead.org\n\t(client-ip=65.50.211.133; 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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20170209; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:\n\tList-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:\n\tSubject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date:\n\tResent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:\n\tReferences:List-Owner; bh=Dr4VYjdk03FEm7afLSjuHxO3nPRRigWjxTFfJPFB+pw=;\n\tb=oQA\n\tgkb1DKTkdsiqzSFnFt/dUF9VIrJ1oh5F/P6tTKksHwh19S46dqEqWeuxoAQcTnr5fHS3gyvG6+G8L\n\twZ0lDI7lf2tKH6xoby5onA8QxzVlBOP5aODT+74VL9xkxb506dx1kN2d697oNKjP5t3kQ0P+F7GgQ\n\tJ+FtuJZGIfQli3l9wkyvj9ZltlK/hdBwOkV0jQX378C1lXlo5yv3IW6fFAXkGJWhce79ya8UZzqkj\n\tEmCr7+rxR6ycYR+QJocPZ1FofFPGRdbONbAV2zOR42s9r99igpikK/onNd371f7Gbh26NS6XATD6I\n\t78XT0h9NHXxfYjleUEV5aXthpoZslNw==;", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google;\n\th=from:to:cc:subject:date:message-id;\n\tbh=T/idXAsuWhj6LC9jNbXCgFddQJbxSrQRNyQf3c+Z3y0=;\n\tb=Im0rvPtjvn8F1vb4P5Y8pWMbKD12/+3rF670rYfNCYTOua85RveErCSjNx+d7Z0uoZ\n\tEedBQKhuDJ1J6hOaOaYW9kefevJkGAFT5WHKvKyDc0q3WU1oD32JsxqsN+3Y7D4prc8i\n\tb1WyU9WRyqS01n2yZShwlRLzPwbBL6whdk8Ng=" ], "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id;\n\tbh=T/idXAsuWhj6LC9jNbXCgFddQJbxSrQRNyQf3c+Z3y0=;\n\tb=ZTmBGz4rXxpZb1vSZTWU9xMHdmuHfPmA7SVnB8cxhUG0BBBbotNz+OVWGziCkKiMJc\n\tE0YJ71GdMas6uRn28DLw2MCNEKlslTaLBI1mMcXXZqs9IOcNq4EouDqQgL8IohcZApvv\n\t79+6WOeIk87vQKax7Is+TKfBPUQj6R7Q1drjVVPxXRY8tMNFg3PI9xO3vt/DkvQL1Uw/\n\tkoaKXjmWxexUvarMW3SxmMSrCo/j4B6UA7QdFJn9tluZ7yOh8/a/d/oROac0s4XHawrW\n\tvxiwRpjIm38ZTH74C80jOdYZ3R4X2Gb2YqFODLDZrkRiWsjzS6d2Pb8T1WA37xQ9w+bH\n\tE6TQ==", "X-Gm-Message-State": "AHPjjUjAEaIPz2toDGWk5PCBSTKaUK2BixoujiqkTwkK1zvboi2M3UR+\n\twGrrQlONElDeI0X3", "X-Google-Smtp-Source": "ADKCNb5dvwf+EFLpzO9VJH8k/mV0jWJRZ3mJg94i/1DC7ykvdDSSqhjBp9gllKM+c+cZJSll1SMUYw==", "X-Received": "by 10.98.30.2 with SMTP id e2mr3346288pfe.349.1504882375411;\n\tFri, 08 Sep 2017 07:52:55 -0700 (PDT)", "From": "Christoffer Dall <christoffer.dall@linaro.org>", "To": "kvmarm@lists.cs.columbia.edu,\n\tlinux-arm-kernel@lists.infradead.org", "Subject": "[PATCH 0/2] Fix preemption issues with kvm_arm_get_running_vcpu", "Date": "Fri, 8 Sep 2017 07:52:17 -0700", "Message-Id": "<1504882339-42520-1-git-send-email-christoffer.dall@linaro.org>", "X-Mailer": "git-send-email 2.7.4", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20170908_075316_497103_0F2D1D10 ", "X-CRM114-Status": "UNSURE ( 9.75 )", "X-CRM114-Notice": "Please train this message.", "X-Spam-Score": "-2.0 (--)", "X-Spam-Report": "SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-2.0 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]\n\t-0.1 DKIM_VALID Message has at least one valid DKIM or DK signature\n\t0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n\tnot necessarily valid\n\t-0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n\tauthor's domain", "X-BeenThere": "linux-arm-kernel@lists.infradead.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-arm-kernel/>", "List-Post": "<mailto:linux-arm-kernel@lists.infradead.org>", "List-Help": "<mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>", "Cc": "Marc Zyngier <marc.zyngier@arm.com>, Christoffer Dall <cdall@linaro.org>,\n\themk976@gmail.com, Jintack Lim <jintack@cs.columbia.edu>,\n\tkvm@vger.kernel.org", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-arm-kernel\" <linux-arm-kernel-bounces@lists.infradead.org>", "Errors-To": "linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org", "List-Id": "linux-imx-kernel.lists.patchwork.ozlabs.org" }, "content": "From: Christoffer Dall <cdall@linaro.org>\n\nThese two patches slightly improves our preemption configuration when\naccessing the per-CPU variables holding the currently running VCPU by\nremoving a redundant check and rearranging calling code from\nnon-preemptible context on RT systems.\n\nI'm not entirely sure if we fix issues only affecting PREEMPT_RT in mainline\nand also cc these to stable. Looking at the git log there seems to be some\nprecedence for this. If not, I'm happy to remove the cc tag and/or drop the\nsecond patch.\n\nThanks,\n-Christoffer\n\nChristoffer Dall (2):\n KVM: arm/arm64: Remove redundant preemptible checks\n KVM: arm/arm64: Fix vgic_mmio_change_active with PREEMPT_RT\n\n virt/kvm/arm/arm.c | 2 --\n virt/kvm/arm/vgic/vgic-mmio.c | 12 +++++++++++-\n 2 files changed, 11 insertions(+), 3 deletions(-)" }