From nobody Thu Sep 18 14:13:55 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43755C4321E for ; Mon, 5 Dec 2022 21:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234013AbiLEVmj (ORCPT ); Mon, 5 Dec 2022 16:42:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233783AbiLEVlx (ORCPT ); Mon, 5 Dec 2022 16:41:53 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 090CA27DE2; Mon, 5 Dec 2022 13:41:52 -0800 (PST) Date: Mon, 05 Dec 2022 21:41:47 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1670276507; h=from:from:sender:sender:reply-to: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=qZETIdDmjfYeCy0D3lsONaap4DkGkoDJ9L7K3FVnWKA=; b=Ix6zovcmxiAi3jxnVFYmtLdH5vz6mwZUmDlpi/sFVmqhnqrqn9FjwBvgjvm1rSiJ4YQi22 4m7W22/Tthk4YETRRoEcnO4rW+5an/DPzbX0APiabL6gDBVk6pnE0cZ1461Y3MlOX16vIR CnV3xL5REJLObw6NHyAg6XZJoPIWYL0KmfheKG/KlkOph+Y+cCR8xWNaPR/D9gvZRczoK1 e2eUeFBGDTv3SIosj28iLs/hpp1fy+TApeV/OLHprqO5ZLeGXDLGdGD1cnjB+jc50NuR/A ePMy2VIO1fw/M+9IoF3HJDjvqdrAiBBBEy/Hr7LjPvDA/TNIqvnIUgDfFBKwmA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1670276507; h=from:from:sender:sender:reply-to: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=qZETIdDmjfYeCy0D3lsONaap4DkGkoDJ9L7K3FVnWKA=; b=OBe3Fv3HX1BQ4NRfCwkcJKlJTrr9Y6mfoS4Lln/byaPZuFpRDLcFtmqBx2xk0Q7l+4V7pS bbdT4zPALFAi1YCQ== From: "tip-bot2 for Thomas Gleixner" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: irq/core] genirq/msi: Provide constants for PCI/IMS support Cc: Thomas Gleixner , Kevin Tian , Marc Zyngier , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20221124232326.846169830@linutronix.de> References: <20221124232326.846169830@linutronix.de> MIME-Version: 1.0 Message-ID: <167027650717.4906.6017670287416779656.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the irq/core branch of tip: Commit-ID: e23d4192bf9b612bce5b24f22719fd3cc6edaa69 Gitweb: https://git.kernel.org/tip/e23d4192bf9b612bce5b24f22719fd3cc= 6edaa69 Author: Thomas Gleixner AuthorDate: Fri, 25 Nov 2022 00:26:28 +01:00 Committer: Thomas Gleixner CommitterDate: Mon, 05 Dec 2022 22:22:34 +01:00 genirq/msi: Provide constants for PCI/IMS support Provide the necessary constants for PCI/IMS support: - A new bus token for MSI irqdomain identification - A MSI feature flag for the MSI irqdomains to signal support - A secondary domain id The latter expands the device internal domain pointer storage array from 1 to 2 entries. That extra pointer is mostly unused today, but the alternative solutions would not be free either and would introduce more complexity all over the place. Trade the 8bytes for simplicity. Signed-off-by: Thomas Gleixner Reviewed-by: Kevin Tian Acked-by: Marc Zyngier Link: https://lore.kernel.org/r/20221124232326.846169830@linutronix.de --- include/linux/irqdomain_defs.h | 1 + include/linux/msi.h | 2 ++ include/linux/msi_api.h | 1 + 3 files changed, 4 insertions(+) diff --git a/include/linux/irqdomain_defs.h b/include/linux/irqdomain_defs.h index 0b2d8a8..c29921f 100644 --- a/include/linux/irqdomain_defs.h +++ b/include/linux/irqdomain_defs.h @@ -25,6 +25,7 @@ enum irq_domain_bus_token { DOMAIN_BUS_PCI_DEVICE_MSIX, DOMAIN_BUS_DMAR, DOMAIN_BUS_AMDVI, + DOMAIN_BUS_PCI_DEVICE_IMS, }; =20 #endif /* _LINUX_IRQDOMAIN_DEFS_H */ diff --git a/include/linux/msi.h b/include/linux/msi.h index 3cb1586..a112b91 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -559,6 +559,8 @@ enum { MSI_FLAG_MSIX_CONTIGUOUS =3D (1 << 19), /* PCI/MSI-X vectors can be dynamically allocated/freed post MSI-X enable= */ MSI_FLAG_PCI_MSIX_ALLOC_DYN =3D (1 << 20), + /* Support for PCI/IMS */ + MSI_FLAG_PCI_IMS =3D (1 << 21), }; =20 /** diff --git a/include/linux/msi_api.h b/include/linux/msi_api.h index 5ae72d1..391087a 100644 --- a/include/linux/msi_api.h +++ b/include/linux/msi_api.h @@ -15,6 +15,7 @@ struct device; */ enum msi_domain_ids { MSI_DEFAULT_DOMAIN, + MSI_SECONDARY_DOMAIN, MSI_MAX_DEVICE_IRQDOMAINS, };