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 Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E1EC3C433EF for ; Fri, 6 May 2022 19:54:01 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 84DB160D6E; Fri, 6 May 2022 19:54:01 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EhOCK6W8NWZZ; Fri, 6 May 2022 19:53:59 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id 3C3F560D57; Fri, 6 May 2022 19:53:59 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 12665C0039; Fri, 6 May 2022 19:53:59 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 488ADC002D for ; Fri, 6 May 2022 19:53:58 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 2108340577 for ; Fri, 6 May 2022 19:53:58 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=linutronix.de header.b="Xc8Vtd93"; dkim=neutral reason="invalid (unsupported algorithm ed25519-sha256)" header.d=linutronix.de header.b="/4l7akva" Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hA4DXeJcKHq7 for ; Fri, 6 May 2022 19:53:57 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by smtp2.osuosl.org (Postfix) with ESMTPS id 6EFC740558 for ; Fri, 6 May 2022 19:53:56 +0000 (UTC) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1651866834; 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: in-reply-to:in-reply-to:references:references; bh=hPigNHr8wXW4Jsp9L+zcdiLLC2xp5wKYQoiAjHdLkb0=; b=Xc8Vtd935tKSHJ4TItbPhom70GX4iR+XaOHyoZEbq2TCP4h9WjKpN0MVzmsUbMnujiBgnV WXGzehvrucSX1BoXOdNpoMb3s0YNBoPdGbKtAB3wDRyptT25vNwG7QcC7LwRl3B15XR6VM FhGG5jK12XCNGha0igmSaWXXc2p4A3H1NRfSABcL1Z3IwAXCO4O3qpx16YQ/THdTjg92ya In409B3HY2BR55Mv7J/T3Np4Rdy7VMWpG58IDPN5+hY6NlLD7uyzePgQU6EvXGIFGFCODZ 3pB/pK2v3RdJoDZ1aaYSIcYs0qALgfVW7BGlvJCXH5N/7ExJVtGCxVmBC9jnxw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1651866834; 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: in-reply-to:in-reply-to:references:references; bh=hPigNHr8wXW4Jsp9L+zcdiLLC2xp5wKYQoiAjHdLkb0=; b=/4l7akvaVCpYSimscxE6emXgo2DDhYqJsbAjKJILCBQFs5NLOHNmvvAauEvq153gAwkORH f5cYHMQqOtGE5zCA== To: Ricardo Neri , x86@kernel.org Subject: Re: [PATCH v6 02/29] x86/apic: Add irq_cfg::delivery_mode In-Reply-To: <20220506000008.30892-3-ricardo.neri-calderon@linux.intel.com> References: <20220506000008.30892-1-ricardo.neri-calderon@linux.intel.com> <20220506000008.30892-3-ricardo.neri-calderon@linux.intel.com> Date: Fri, 06 May 2022 21:53:54 +0200 Message-ID: <875ymih1yl.ffs@tglx> MIME-Version: 1.0 Cc: "Ravi V. Shankar" , Andi Kleen , linuxppc-dev@lists.ozlabs.org, Ricardo Neri , Stephane Eranian , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Tony Luck , Nicholas Piggin , Ricardo Neri , Andrew Morton , David Woodhouse X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Thu, May 05 2022 at 16:59, Ricardo Neri wrote: > Currently, the delivery mode of all interrupts is set to the mode of the > APIC driver in use. There are no restrictions in hardware to configure the > delivery mode of each interrupt individually. Also, certain IRQs need > to be s/IRQ/interrupt/ Changelogs can do without acronyms. > configured with a specific delivery mode (e.g., NMI). > > Add a new member, delivery_mode, to struct irq_cfg. Subsequent changesets > will update every irq_domain to set the delivery mode of each IRQ to that > specified in its irq_cfg data. > > To keep the current behavior, when allocating an IRQ in the root > domain The root domain does not allocate an interrupt. The root domain allocates a vector for an interrupt. There is a very clear and technical destinction. Can you please be more careful about the wording? > --- a/arch/x86/kernel/apic/vector.c > +++ b/arch/x86/kernel/apic/vector.c > @@ -567,6 +567,7 @@ static int x86_vector_alloc_irqs(struct irq_domain *domain, unsigned int virq, > irqd->chip_data = apicd; > irqd->hwirq = virq + i; > irqd_set_single_target(irqd); > + Stray newline. > /* > * Prevent that any of these interrupts is invoked in > * non interrupt context via e.g. generic_handle_irq() > @@ -577,6 +578,14 @@ static int x86_vector_alloc_irqs(struct irq_domain *domain, unsigned int virq, > /* Don't invoke affinity setter on deactivated interrupts */ > irqd_set_affinity_on_activate(irqd); > > + /* > + * Initialize the delivery mode of this irq to match the s/irq/interrupt/ > + * default delivery mode of the APIC. Children irq domains > + * may take the delivery mode from the individual irq > + * configuration rather than from the APIC driver. > + */ > + apicd->hw_irq_cfg.delivery_mode = apic->delivery_mode; > + > /* > * Legacy vectors are already assigned when the IOAPIC > * takes them over. They stay on the same vector. This is _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu