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GET /api/patches/812464/?format=api
{ "id": 812464, "url": "http://patchwork.ozlabs.org/api/patches/812464/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170911171235.29331-9-clg@kaod.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "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": "<20170911171235.29331-9-clg@kaod.org>", "list_archive_url": null, "date": "2017-09-11T17:12:22", "name": "[RFC,v2,08/21] ppc/xive: describe the XIVE interrupt source flags", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c49241e8b2f196785c52ddd5315f8d66c7a4cb58", "submitter": { "id": 68548, "url": "http://patchwork.ozlabs.org/api/people/68548/?format=api", "name": "Cédric Le Goater", "email": "clg@kaod.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170911171235.29331-9-clg@kaod.org/mbox/", "series": [ { "id": 2526, "url": "http://patchwork.ozlabs.org/api/series/2526/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=2526", "date": "2017-09-11T17:12:14", "name": "Guest exploitation of the XIVE interrupt controller (POWER9)", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/2526/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/812464/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/812464/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "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; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)", "Received": [ "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xrZRM39Kpz9s81\n\tfor <incoming@patchwork.ozlabs.org>;\n\tTue, 12 Sep 2017 03:19:27 +1000 (AEST)", "from localhost ([::1]:59294 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1drSMn-0005HA-Dk\n\tfor incoming@patchwork.ozlabs.org; Mon, 11 Sep 2017 13:19:25 -0400", "from eggs.gnu.org ([2001:4830:134:3::10]:35112)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <clg@kaod.org>) id 1drSHQ-0000zG-Is\n\tfor qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:53 -0400", "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <clg@kaod.org>) id 1drSHL-00048K-Kr\n\tfor qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:52 -0400", "from 2.mo2.mail-out.ovh.net ([188.165.53.149]:38889)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from <clg@kaod.org>) id 1drSHL-00047l-Ez\n\tfor qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:47 -0400", "from player770.ha.ovh.net (b6.ovh.net [213.186.33.56])\n\tby mo2.mail-out.ovh.net (Postfix) with ESMTP id 835E3AB087\n\tfor <qemu-devel@nongnu.org>; Mon, 11 Sep 2017 19:13:46 +0200 (CEST)", "from zorba.kaod.org.com (LFbn-1-2231-173.w90-76.abo.wanadoo.fr\n\t[90.76.52.173]) (Authenticated sender: clg@kaod.org)\n\tby player770.ha.ovh.net (Postfix) with ESMTPSA id 53DFF3C006C;\n\tMon, 11 Sep 2017 19:13:39 +0200 (CEST)" ], "From": "=?utf-8?q?C=C3=A9dric_Le_Goater?= <clg@kaod.org>", "To": "qemu-ppc@nongnu.org, qemu-devel@nongnu.org,\n\tDavid Gibson <david@gibson.dropbear.id.au>,\n\tBenjamin Herrenschmidt <benh@kernel.crashing.org>,\n\tAlexey Kardashevskiy <aik@ozlabs.ru>, Alexander Graf <agraf@suse.de>", "Date": "Mon, 11 Sep 2017 19:12:22 +0200", "Message-Id": "<20170911171235.29331-9-clg@kaod.org>", "X-Mailer": "git-send-email 2.13.5", "In-Reply-To": "<20170911171235.29331-1-clg@kaod.org>", "References": "<20170911171235.29331-1-clg@kaod.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "X-Ovh-Tracer-Id": "14144117580534418259", "X-VR-SPAMSTATE": "OK", "X-VR-SPAMSCORE": "-100", "X-VR-SPAMCAUSE": "gggruggvucftvghtrhhoucdtuddrfeelledrgedtgdduudehucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm", "Content-Transfer-Encoding": "quoted-printable", "X-detected-operating-system": "by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]\n\t[fuzzy]", "X-Received-From": "188.165.53.149", "Subject": "[Qemu-devel] [RFC PATCH v2 08/21] ppc/xive: describe the XIVE\n\tinterrupt source flags", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<http://lists.nongnu.org/archive/html/qemu-devel/>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "=?utf-8?q?C=C3=A9dric_Le_Goater?= <clg@kaod.org>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "The XIVE interrupt sources can have different characteristics\ndepending on their nature and the HW level in use. The PAPR specs\nprovide a set of flags to describe them : :\n\n - XIVE_SRC_H_INT_ESB the Event State Buffers are controlled with a\n specific hcall H_INT_ESB and not with MMIO\n - XIVE_SRC_LSI LSI or MSI source (ICSIRQState level)\n - XIVE_SRC_TRIGGER the full function page supports trigger\n - XIVE_SRC_STORE_EOI EOI can be done with a store.\n\nOur QEMU emulation of XIVE for the sPAPR machine gathers all sources\nunder a same model and provides a common source with the\nXIVE_SRC_TRIGGER type. So, the above list is mostly informative apart\nfrom the XIVE_SRC_LSI flag which will be deduced from the\nXICS_FLAGS_IRQ_LSI flag of the ICSIRQState array when needed.\n\nThe OS retrieves this information on the source with the\nH_INT_GET_SOURCE_INFO hcall.\n\nSigned-off-by: Cédric Le Goater <clg@kaod.org>\n---\n hw/intc/spapr_xive.c | 4 ++++\n include/hw/ppc/spapr_xive.h | 7 +++++++\n 2 files changed, 11 insertions(+)", "diff": "diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c\nindex 8a85d64efc4c..a1ce993d2afa 100644\n--- a/hw/intc/spapr_xive.c\n+++ b/hw/intc/spapr_xive.c\n@@ -371,6 +371,10 @@ static void spapr_xive_realize(DeviceState *dev, Error **errp)\n ics_set_irq_type(xive->ics, i, false);\n }\n \n+ /* All sources are emulated under the XIVE object and share the\n+ * same characteristic */\n+ xive->flags = XIVE_SRC_TRIGGER;\n+\n /* Allocate SBEs (State Bit Entry). 2 bits, so 4 entries per byte */\n xive->sbe_size = DIV_ROUND_UP(xive->nr_irqs, 4);\n xive->sbe = g_malloc0(xive->sbe_size);\ndiff --git a/include/hw/ppc/spapr_xive.h b/include/hw/ppc/spapr_xive.h\nindex 0f516534d76a..b46e59319236 100644\n--- a/include/hw/ppc/spapr_xive.h\n+++ b/include/hw/ppc/spapr_xive.h\n@@ -40,6 +40,13 @@ struct sPAPRXive {\n ICSState *ics; /* XICS source inherited from the SPAPR machine */\n qemu_irq *qirqs;\n \n+ /* Interrupt source flags */\n+#define XIVE_SRC_H_INT_ESB (1ull << (63 - 60))\n+#define XIVE_SRC_LSI (1ull << (63 - 61))\n+#define XIVE_SRC_TRIGGER (1ull << (63 - 62))\n+#define XIVE_SRC_STORE_EOI (1ull << (63 - 63))\n+ uint32_t flags;\n+\n /* XIVE internal tables */\n uint8_t *sbe;\n uint32_t sbe_size;\n", "prefixes": [ "RFC", "v2", "08/21" ] }