From nobody Sat Nov 15 11:14:53 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1753115300; cv=none; d=zohomail.com; s=zohoarc; b=Z1/UNUeKc8HiolTlw77101Fn5e/nr7xTf0t12BbWnG5RSeiLebNCA9ND91crPQoKYg3aaJNAFojqvnlsTpWSMYYnraoPV5B2M6M7l1LKS5vAQzMjAaYU52d3S7zAVcR29A7tuZ68bXjlG6WDJvgEX0EegTyd8zIAwhcyddqgSGw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1753115300; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=7QN5VLHm8a0imbzsn30xkxBHwfO0cbV7O1xSvFfJiIA=; b=PhlelF/3yrdF0N6pOodUVH7zydy0s/OYDKVkTku6zL4sxoQa42q72ePZo/QpukTi7YDf4qwW/deuUnHFnKXcu6MHIUPFlmmZNu2VFD0Vf+X64OpFWrR8c6qcz5jUQw6yovb/D+nCdW2NTLjQNBxsY/4Xrr/xQq+xjjY3mtJXd0M= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1753115300730137.22218141349833; Mon, 21 Jul 2025 09:28:20 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1udtMf-0006qe-J2; Mon, 21 Jul 2025 12:27:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1udtJu-0008Km-9t for qemu-devel@nongnu.org; Mon, 21 Jul 2025 12:24:54 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1udtJq-0001nY-J8 for qemu-devel@nongnu.org; Mon, 21 Jul 2025 12:24:52 -0400 Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-324-MH30Sm25OA2UkxaOBRGN_Q-1; Mon, 21 Jul 2025 12:24:46 -0400 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id DE2951956046; Mon, 21 Jul 2025 16:24:44 +0000 (UTC) Received: from corto.redhat.com (unknown [10.45.224.19]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id A9884195608D; Mon, 21 Jul 2025 16:24:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1753115089; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7QN5VLHm8a0imbzsn30xkxBHwfO0cbV7O1xSvFfJiIA=; b=bOfwSDDwflLWDBCASxLkOfbUZ6YpesVmWNFN8f/XKQcQu2RBmGLabmgiMbRi1jId8RWwol 5u7MMMnmF7TNWJfghkdc1tdXmcr3DhI5zxBhkSWOB5qZBN8tT4/0AbaG6mbV/XoVc5feVE DB2Zbmu19zgaLMGBrvSiKCm5tt6uRvQ= X-MC-Unique: MH30Sm25OA2UkxaOBRGN_Q-1 X-Mimecast-MFC-AGG-ID: MH30Sm25OA2UkxaOBRGN_Q_1753115085 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Daniel Henrique Barboza , Glenn Miles , Michael Kowal , Gautam Menghani , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PULL 45/50] ppc/xive2: redistribute group interrupts on context push Date: Mon, 21 Jul 2025 18:22:28 +0200 Message-ID: <20250721162233.686837-46-clg@redhat.com> In-Reply-To: <20250721162233.686837-1-clg@redhat.com> References: <20250721162233.686837-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.926, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1753115303223116600 From: Nicholas Piggin When pushing a context, any presented group interrupt should be redistributed before processing pending interrupts to present highest priority. This can occur when pushing the POOL ring when the valid PHYS ring has a group interrupt presented, because they share signal registers. Signed-off-by: Nicholas Piggin Reviewed-by: Glenn Miles Reviewed-by: Michael Kowal Tested-by: Gautam Menghani Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-46-npiggin@g= mail.com Signed-off-by: C=C3=A9dric Le Goater --- hw/intc/xive2.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c index 4244e1d02b61..23eb85bb8669 100644 --- a/hw/intc/xive2.c +++ b/hw/intc/xive2.c @@ -945,8 +945,9 @@ static void xive2_tctx_need_resend(Xive2Router *xrtr, X= iveTCTX *tctx, uint8_t nvp_blk, uint32_t nvp_idx, bool do_restore) { + uint8_t *sig_regs =3D xive_tctx_signal_regs(tctx, ring); uint8_t *regs =3D &tctx->regs[ring]; - uint8_t ipb; + uint8_t ipb, nsr =3D sig_regs[TM_NSR]; Xive2Nvp nvp; =20 /* @@ -978,6 +979,11 @@ static void xive2_tctx_need_resend(Xive2Router *xrtr, = XiveTCTX *tctx, /* IPB bits in the backlog are merged with the TIMA IPB bits */ regs[TM_IPB] |=3D ipb; =20 + if (xive_nsr_indicates_group_exception(ring, nsr)) { + /* redistribute precluded active grp interrupt */ + g_assert(ring =3D=3D TM_QW2_HV_POOL); /* PHYS ring has the grp int= errupt */ + xive2_redistribute(xrtr, tctx, xive_nsr_exception_ring(ring, nsr)); + } xive2_tctx_process_pending(tctx, ring =3D=3D TM_QW2_HV_POOL ? TM_QW3_HV_PHYS : ring); } --=20 2.50.1