{"id":769490,"url":"http://patchwork.ozlabs.org/api/1.2/patches/769490/?format=json","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/1.2/projects/2/?format=json","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powerpc/powernv: Add config option for removal of memory","commit_ref":null,"pull_url":null,"state":"superseded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/1.2/people/71056/?format=json","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":"","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 ;\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 ;\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 ;\n\tThu, 1 Jun 2017 15:34:52 +1000 (AEST)","by mail-pf0-x241.google.com with SMTP id w69so6541445pfk.1\n\tfor ;\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 ","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","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"Rashmica Gupta ","Errors-To":"linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org","Sender":"\"Linuxppc-dev\"\n\t"},"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 \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"]}