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GET /api/patches/769490/?format=api
{ "id": 769490, "url": "http://patchwork.ozlabs.org/api/patches/769490/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20170601053440.28976-1-rashmica.g@gmail.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20170601053440.28976-1-rashmica.g@gmail.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20170601053440.28976-1-rashmica.g@gmail.com/", "date": "2017-06-01T05:34:38", "name": "[v3,1/3] powerpc/powernv: Add config option for removal of memory", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "0fbefc33ccf2dddf20a1395a27883cf3f932b0b2", "submitter": { "id": 71056, "url": "http://patchwork.ozlabs.org/api/people/71056/?format=api", "name": "Rashmica Gupta", "email": "rashmica.g@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20170601053440.28976-1-rashmica.g@gmail.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/769490/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/769490/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3wdbg76PM9z9s89\n\tfor <patchwork-incoming@ozlabs.org>;\n\tThu, 1 Jun 2017 15:36:19 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3wdbg756r2zDqK1\n\tfor <patchwork-incoming@ozlabs.org>;\n\tThu, 1 Jun 2017 15:36:19 +1000 (AEST)", "from mail-pf0-x241.google.com (mail-pf0-x241.google.com\n\t[IPv6:2607:f8b0:400e:c00::241])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3wdbdS47MxzDqBQ\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tThu, 1 Jun 2017 15:34:52 +1000 (AEST)", "by mail-pf0-x241.google.com with SMTP id w69so6541445pfk.1\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tWed, 31 May 2017 22:34:52 -0700 (PDT)", "from rashmica.ozlabs.ibm.com ([122.99.82.10])\n\tby smtp.gmail.com with ESMTPSA id\n\tt17sm29353697pfj.61.2017.05.31.22.34.47\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tWed, 31 May 2017 22:34:49 -0700 (PDT)" ], "Authentication-Results": [ "ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"uZ5K98eJ\"; dkim-atps=neutral", "lists.ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"uZ5K98eJ\"; dkim-atps=neutral", "lists.ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"uZ5K98eJ\"; dkim-atps=neutral" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;\n\th=from:to:cc:subject:date:message-id;\n\tbh=s5Bd9XaxToBsoGVQnzE7JAi7KzlKMR44P6P7Sl46Zq0=;\n\tb=uZ5K98eJNjLnzygmC7REtGdJE0erI617z56eEkyFeg8syqs0NtW8VcoD9BQ6eRtg3Z\n\tRFawr+MEuXtW27/wg0M5wMklJSQy5HOuAZoYKmkOjEZJXqtGQ8pqkJXf7o81PmIu6Pul\n\tKx3RGdYBFgsBGBDI5CeWXLg3r1IYasuhWwZvrva/8r0mSWv80ZjaDornTzYtwPSmfsrr\n\tNb9u+hK2JyqoCtGbtDq2YHE1/NUZEYq8EXdXVTrFXiS2KW4VZSp6oBCa3mp3zwoNtXw8\n\ttyBPbxLLPP87hChI810pSDfbWxDP8/n0xOIvaRLDYeJ20DiAyNafa4xNQc4l9x5VjgHX\n\tWkZg==", "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=s5Bd9XaxToBsoGVQnzE7JAi7KzlKMR44P6P7Sl46Zq0=;\n\tb=FhzEUkvy1jTvQyP0kt5er8Td/kICCTHp7scahbeUzIAoWD9fcf2VxjrQmi1kukObCu\n\tj4S4S1CdVq0AvR5pTfYW3qf6Z3mdbZZji9GsaQmLIKVq6PLzYhymxiL4Q3y+dWmXfMf5\n\tJWktehwd7R2qoi00zqPoEC87gTcvQy8G8fyw9jCW24drSJuw+mcL4NvvrZnzCwrzoPSQ\n\tyVYw8MmEqubWld8mSanm2VIDi/tPaeZ9RaZOHNaUNOUT8QNnSrkL9CuM+qQMmiY2tCUo\n\tgZWWClGH+VlL9aOR1aR5GNHdmZtKw+lyy4EkxSfXEAWH7nysOI90N7QWi9t2gQJM+wCK\n\tCRzA==", "X-Gm-Message-State": "AODbwcBne3BG75630OTlAIO5B8Ch0TsY6LzWkmKJ+wia9XeN5AJz/0zH\n\tvkCZmQavTQLPOw==", "X-Received": "by 10.84.128.33 with SMTP id 30mr92818311pla.111.1496295290630; \n\tWed, 31 May 2017 22:34:50 -0700 (PDT)", "From": "Rashmica Gupta <rashmica.g@gmail.com>", "To": "linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au, anton@samba.org,\n\tnpiggin@gmail.com, bsingharora@gmail.com, oohall@gmail.com,\n\tkhandual@linux.vnet.ibm.com", "Subject": "[PATCH v3 1/3] powerpc/powernv: Add config option for removal of\n\tmemory", "Date": "Thu, 1 Jun 2017 15:34:38 +1000", "Message-Id": "<20170601053440.28976-1-rashmica.g@gmail.com>", "X-Mailer": "git-send-email 2.9.3", "X-BeenThere": "linuxppc-dev@lists.ozlabs.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "Linux on PowerPC Developers Mail List\n\t<linuxppc-dev.lists.ozlabs.org>", "List-Unsubscribe": "<https://lists.ozlabs.org/options/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>", "List-Subscribe": "<https://lists.ozlabs.org/listinfo/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>", "Cc": "Rashmica Gupta <rashmica.g@gmail.com>", "Errors-To": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org", "Sender": "\"Linuxppc-dev\"\n\t<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>" }, "content": "This patch adds the config option to enable the removal\nof memory from the kernel mappings at runtime. This needs\nto be enabled for the hardware trace macro to work.\n\nSigned-off-by: Rashmica Gupta <rashmica.g@gmail.com>\n---\nv2 -> v3: Better description\n\n arch/powerpc/platforms/powernv/Kconfig | 8 ++++++++\n arch/powerpc/platforms/powernv/Makefile | 1 +\n 2 files changed, 9 insertions(+)", "diff": "diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig\nindex 6a6f4ef..92493d6 100644\n--- a/arch/powerpc/platforms/powernv/Kconfig\n+++ b/arch/powerpc/platforms/powernv/Kconfig\n@@ -30,3 +30,11 @@ config OPAL_PRD\n \thelp\n \t This enables the opal-prd driver, a facility to run processor\n \t recovery diagnostics on OpenPower machines\n+\n+config PPC64_HARDWARE_TRACING\n+\tbool \"Enable removal of RAM from kernel mappings for tracing\"\n+\thelp\n+\t Enabling this option allows for the removal of memory (RAM)\n+\t from the kernel mappings to be used for hardware tracing.\n+\tdepends on MEMORY_HOTREMOVE\n+\tdefault n\ndiff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile\nindex b5d98cb..8fb026d 100644\n--- a/arch/powerpc/platforms/powernv/Makefile\n+++ b/arch/powerpc/platforms/powernv/Makefile\n@@ -12,3 +12,4 @@ obj-$(CONFIG_PPC_SCOM)\t+= opal-xscom.o\n obj-$(CONFIG_MEMORY_FAILURE)\t+= opal-memory-errors.o\n obj-$(CONFIG_TRACEPOINTS)\t+= opal-tracepoints.o\n obj-$(CONFIG_OPAL_PRD)\t+= opal-prd.o\n+obj-$(CONFIG_PPC64_HARDWARE_TRACING)\t+= memtrace.o\n", "prefixes": [ "v3", "1/3" ] }