From nobody Tue Nov 4 07:14:44 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1505150755455996.4941609984472; Mon, 11 Sep 2017 10:25:55 -0700 (PDT) Received: from localhost ([::1]:59339 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drST4-0002sx-I6 for importer@patchew.org; Mon, 11 Sep 2017 13:25:54 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35545) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSI7-0001eK-AN for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1drSI2-0004eM-R1 for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:35 -0400 Received: from 3.mo2.mail-out.ovh.net ([46.105.58.226]:57314) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1drSI2-0004di-KB for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:30 -0400 Received: from player770.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo2.mail-out.ovh.net (Postfix) with ESMTP id A79E4AB236 for ; Mon, 11 Sep 2017 19:14:29 +0200 (CEST) Received: from zorba.kaod.org.com (LFbn-1-2231-173.w90-76.abo.wanadoo.fr [90.76.52.173]) (Authenticated sender: clg@kaod.org) by player770.ha.ovh.net (Postfix) with ESMTPSA id 7A2F93C006C; Mon, 11 Sep 2017 19:14:22 +0200 (CEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org, David Gibson , Benjamin Herrenschmidt , Alexey Kardashevskiy , Alexander Graf Date: Mon, 11 Sep 2017 19:12:28 +0200 Message-Id: <20170911171235.29331-15-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 X-Ovh-Tracer-Id: 14156221004876188499 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] [fuzzy] X-Received-From: 46.105.58.226 Subject: [Qemu-devel] [RFC PATCH v2 14/21] ppc/xive: add support for the SET_OS_PENDING command X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Adjusting the Interrupt Pending Buffer for the O/S would allow a CPU to process event queues of other priorities during one physical interrupt cycle. This is not currently used by the XIVE support for sPAPR in Linux but it is by the hypervisor. Signed-off-by: C=C3=A9dric Le Goater --- hw/intc/spapr_xive.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index ad3ff91b13ea..ad3f03e37401 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -162,7 +162,14 @@ static bool spapr_xive_tm_is_readonly(uint8_t index) static void spapr_xive_tm_write_special(ICPState *icp, hwaddr offset, uint64_t value, unsigned size) { - /* TODO: support TM_SPC_SET_OS_PENDING */ + if (offset =3D=3D TM_SPC_SET_OS_PENDING && size =3D=3D 1) { + icp->tima_os[TM_IPB] |=3D priority_to_ipb(value & 0xff); + icp->tima_os[TM_PIPR] =3D ipb_to_pipr(icp->tima_os[TM_IPB]); + spapr_xive_icp_notify(icp); + } else { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: invalid TIMA write @%" + HWADDR_PRIx" size %d\n", offset, size); + } =20 /* TODO: support TM_SPC_ACK_OS_EL */ } --=20 2.13.5