From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3A902C76191 for ; Thu, 18 Jul 2019 11:57:00 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 11EB721019 for ; Thu, 18 Jul 2019 11:57:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 11EB721019 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kaod.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36838 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ho51v-00037X-A5 for qemu-devel@archiver.kernel.org; Thu, 18 Jul 2019 07:56:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58980) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ho50G-0005oD-0P for qemu-devel@nongnu.org; Thu, 18 Jul 2019 07:55:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ho50E-0001yy-Vi for qemu-devel@nongnu.org; Thu, 18 Jul 2019 07:55:15 -0400 Received: from 16.mo6.mail-out.ovh.net ([87.98.139.208]:59243) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ho50E-0001xd-QH for qemu-devel@nongnu.org; Thu, 18 Jul 2019 07:55:14 -0400 Received: from player778.ha.ovh.net (unknown [10.109.143.216]) by mo6.mail-out.ovh.net (Postfix) with ESMTP id 01B1A1D81DA for ; Thu, 18 Jul 2019 13:55:12 +0200 (CEST) Received: from kaod.org (lfbn-1-2240-157.w90-76.abo.wanadoo.fr [90.76.60.157]) (Authenticated sender: clg@kaod.org) by player778.ha.ovh.net (Postfix) with ESMTPSA id 5ED45801F3B0; Thu, 18 Jul 2019 11:55:07 +0000 (UTC) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: David Gibson Date: Thu, 18 Jul 2019 13:54:10 +0200 Message-Id: <20190718115420.19919-8-clg@kaod.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190718115420.19919-1-clg@kaod.org> References: <20190718115420.19919-1-clg@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Ovh-Tracer-Id: 6782421039645887462 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduvddrieehgdegkecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfqggfjpdevjffgvefmvefgnecuuegrihhlohhuthemucehtddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 87.98.139.208 Subject: [Qemu-devel] [PATCH v2 07/17] ppc/xive: Provide silent escalation support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , qemu-ppc@nongnu.org, Greg Kurz , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When the 's' bit is set the escalation is said to be 'silent' or 'silent/gather'. In such configuration, the notification sequence is skipped and only the escalation sequence is performed. This is used to configure all the EQs of a vCPU to escalate on a single EQ which will then target the hypervisor. Signed-off-by: C=C3=A9dric Le Goater --- include/hw/ppc/xive_regs.h | 2 ++ hw/intc/xive.c | 8 ++++++++ 2 files changed, 10 insertions(+) diff --git a/include/hw/ppc/xive_regs.h b/include/hw/ppc/xive_regs.h index 5d02ccfeff16..69af326ebf2c 100644 --- a/include/hw/ppc/xive_regs.h +++ b/include/hw/ppc/xive_regs.h @@ -209,6 +209,8 @@ typedef struct XiveEND { #define xive_end_is_escalate(end) (be32_to_cpu((end)->w0) & END_W0_ESCAL= ATE_CTL) #define xive_end_is_uncond_escalation(end) \ (be32_to_cpu((end)->w0) & END_W0_UNCOND_ESCALATE) +#define xive_end_is_silent_escalation(end) \ + (be32_to_cpu((end)->w0) & END_W0_SILENT_ESCALATE) =20 static inline uint64_t xive_end_qaddr(XiveEND *end) { diff --git a/hw/intc/xive.c b/hw/intc/xive.c index c2e7e2d4c9a9..8ea97ac231a4 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -1463,6 +1463,13 @@ static void xive_router_end_notify(XiveRouter *xrt= r, uint8_t end_blk, xive_router_write_end(xrtr, end_blk, end_idx, &end, 1); } =20 + /* + * When the END is silent, we skip the notification part. + */ + if (xive_end_is_silent_escalation(&end)) { + goto do_escalation; + } + /* * The W7 format depends on the F bit in W6. It defines the type * of the notification : @@ -1542,6 +1549,7 @@ static void xive_router_end_notify(XiveRouter *xrtr= , uint8_t end_blk, */ } =20 +do_escalation: /* * If activated, escalate notification using the ESe PQ bits and * the EAS in w4-5 --=20 2.21.0