From patchwork Sat Nov 27 01:24:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 1560666 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=e24VzNip; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=gCM9TtH7; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4J1FfD1jNDz9sS8 for ; Sat, 27 Nov 2021 13:18:44 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237612AbhK0CVz (ORCPT ); Fri, 26 Nov 2021 21:21:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244994AbhK0CTz (ORCPT ); Fri, 26 Nov 2021 21:19:55 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F087C08EC36; Fri, 26 Nov 2021 17:31:50 -0800 (PST) Message-ID: <20211127000918.779751933@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1637976278; 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: references:references; bh=CFmm+AWRwXcJQSLL7VY9/FlDxYE98PyZd7GrvqHxiD8=; b=e24VzNipUk4hxg1PHC6IAXr9weR7Gc/SoXDfA3RHuL3eUYXW0KQ0vmOx1Rup57wdQ4/c0M j0SsM53zaTsEp+xcsTJcjjvt9idxHze65/F9ku69wsdFH4O1IR3xnNt1kBpYgjtuq1EJx3 G4+8DqRMVr0EurGDQTIs906q+2dXCPyTndaD2DMJHPeXSLph/ufoqB5pa8guu1m5SJm17L kBtRWLOCwVpFplTZ//BIVum2PpChXwXEF/pgcDF3hqzjYmEihoy8xv/uTBJ/AHXGcWoyWZ FCUJcprzFqND4a981S/J+eyIOTEK4LUqOJJk4OnVzXGII9RmrCOyMXoWJHxGBg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1637976278; 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: references:references; bh=CFmm+AWRwXcJQSLL7VY9/FlDxYE98PyZd7GrvqHxiD8=; b=gCM9TtH7kdRRuRtrS2dC9nAFXYnyiZU34H6DDhO0H4O61lGny8X8mQzTO3e0hAM5LNj6ef CHes+qC3TZO1npAA== From: Thomas Gleixner To: LKML Cc: Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , Michael Ellerman , Andrew Cooper , Juergen Gross , linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org Subject: [patch 05/10] genirq/msi: Add domain info flag MSI_FLAG_CAN_EXPAND References: <20211126233124.618283684@linutronix.de> MIME-Version: 1.0 Date: Sat, 27 Nov 2021 02:24:37 +0100 (CET) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Not all MSI domains support runtime expansions of PCI/MSI-X vectors. Add a domain flag so implementations can opt in. Signed-off-by: Thomas Gleixner --- include/linux/msi.h | 2 ++ 1 file changed, 2 insertions(+) --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -494,6 +494,8 @@ enum { MSI_FLAG_ALLOC_SIMPLE_MSI_DESCS = (1 << 9), /* Free MSI descriptors */ MSI_FLAG_FREE_MSI_DESCS = (1 << 10), + /* MSI vectors can be expanded after initial setup */ + MSI_FLAG_CAN_EXPAND = (1 << 11), }; int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,