{"id":815705,"url":"http://patchwork.ozlabs.org/api/patches/815705/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/1505839684-10046-2-git-send-email-a.perevalov@samsung.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1505839684-10046-2-git-send-email-a.perevalov@samsung.com>","list_archive_url":null,"date":"2017-09-19T16:47:55","name":"[v10,01/10] userfault: update kernel header for UFFD_FEATURE_*","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"0507c052b133f46907425ecd6a33dd0d5070de96","submitter":{"id":18164,"url":"http://patchwork.ozlabs.org/api/people/18164/?format=json","name":"Alexey Perevalov","email":"a.perevalov@samsung.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/1505839684-10046-2-git-send-email-a.perevalov@samsung.com/mbox/","series":[{"id":3930,"url":"http://patchwork.ozlabs.org/api/series/3930/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=3930","date":"2017-09-19T16:48:03","name":"calculate blocktime for postcopy live migration","version":10,"mbox":"http://patchwork.ozlabs.org/series/3930/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/815705/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/815705/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; 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eggs.gnu.org: GNU/Linux 3.x [fuzzy]","X-Received-From":"210.118.77.11","Subject":"[Qemu-devel] [PATCH v10 01/10] userfault: update kernel header for\n\tUFFD_FEATURE_*","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"heetae82.ahn@samsung.com, quintela@redhat.com,\n\tAlexey Perevalov , peterx@redhat.com,\n\tdgilbert@redhat.com, i.maximets@samsung.com","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"},"content":"This commit adds modification for UFFD_FEATURE_SIGBUS and\nUFFD_FEATURE_THREAD_ID.\n\nSigned-off-by: Alexey Perevalov \n---\n linux-headers/linux/userfaultfd.h | 16 +++++++++++++++-\n 1 file changed, 15 insertions(+), 1 deletion(-)","diff":"diff --git a/linux-headers/linux/userfaultfd.h b/linux-headers/linux/userfaultfd.h\nindex 9701772..b43cf0d 100644\n--- a/linux-headers/linux/userfaultfd.h\n+++ b/linux-headers/linux/userfaultfd.h\n@@ -23,7 +23,9 @@\n \t\t\t UFFD_FEATURE_EVENT_REMOVE |\t\\\n \t\t\t UFFD_FEATURE_EVENT_UNMAP |\t\t\\\n \t\t\t UFFD_FEATURE_MISSING_HUGETLBFS |\t\\\n-\t\t\t UFFD_FEATURE_MISSING_SHMEM)\n+\t\t\t UFFD_FEATURE_MISSING_SHMEM |\t\t\\\n+\t\t\t UFFD_FEATURE_SIGBUS |\t\t\\\n+\t\t\t UFFD_FEATURE_THREAD_ID)\n #define UFFD_API_IOCTLS\t\t\t\t\\\n \t((__u64)1 << _UFFDIO_REGISTER |\t\t\\\n \t (__u64)1 << _UFFDIO_UNREGISTER |\t\\\n@@ -78,6 +80,9 @@ struct uffd_msg {\n \t\tstruct {\n \t\t\t__u64\tflags;\n \t\t\t__u64\taddress;\n+\t\t\tunion {\n+\t\t\t\t__u32 ptid;\n+\t\t\t} feat;\n \t\t} pagefault;\n \n \t\tstruct {\n@@ -153,6 +158,13 @@ struct uffdio_api {\n \t * UFFD_FEATURE_MISSING_SHMEM works the same as\n \t * UFFD_FEATURE_MISSING_HUGETLBFS, but it applies to shmem\n \t * (i.e. tmpfs and other shmem based APIs).\n+\t *\n+\t * UFFD_FEATURE_SIGBUS feature means no page-fault\n+\t * (UFFD_EVENT_PAGEFAULT) event will be delivered, instead\n+\t * a SIGBUS signal will be sent to the faulting process.\n+\t *\n+\t * UFFD_FEATURE_THREAD_ID pid of the page faulted task_struct will\n+\t * be returned, if feature is not requested 0 will be returned.\n \t */\n #define UFFD_FEATURE_PAGEFAULT_FLAG_WP\t\t(1<<0)\n #define UFFD_FEATURE_EVENT_FORK\t\t\t(1<<1)\n@@ -161,6 +173,8 @@ struct uffdio_api {\n #define UFFD_FEATURE_MISSING_HUGETLBFS\t\t(1<<4)\n #define UFFD_FEATURE_MISSING_SHMEM\t\t(1<<5)\n #define UFFD_FEATURE_EVENT_UNMAP\t\t(1<<6)\n+#define UFFD_FEATURE_SIGBUS\t\t\t(1<<7)\n+#define UFFD_FEATURE_THREAD_ID\t\t\t(1<<8)\n \t__u64 features;\n \n \t__u64 ioctls;\n","prefixes":["v10","01/10"]}