From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 553022C2374; Mon, 23 Mar 2026 21:16:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774300561; cv=none; b=d1AL6v3Yn3Ryte4lW59oHAlUuGGlXplHOApTvfRlkMr9afMhJkuwmwQjaw4YJLo3l8QcdyGZj46L53QrrWRmpo4X4xnx26cLQSAlqG2Df2ir6/W/Cl/9Kpk4UugU1XCS4fQYueXNPSXRO8uyMc25m2am3YLVZqEzTniJWrXueyU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774300561; c=relaxed/simple; bh=mxBUimSBCNpUreyoXRAv4n0wUm0qpSEw4i9qshEoaR0=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=bhFfY+d++LKaaIn08EUWfa6eFdVi4/dPhu5H5Z0wBa1CjiQ8ofR+CJblnq/jR28u9v+M1mMKgtyDP95lqsw4HSC3/t5p5lzLyRBKQgmpvYaQIzYbbIWOT2wiq3YZ1mGf/UCkUSs7ddKaF7aAIH+U07NQ9FMWx4R11FF22s4jmwI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UFUi0Y/U; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UFUi0Y/U" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 07EFEC4CEF7; Mon, 23 Mar 2026 21:15:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774300560; bh=mxBUimSBCNpUreyoXRAv4n0wUm0qpSEw4i9qshEoaR0=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=UFUi0Y/ULHPfgpb69BNGJ2jJaopV1WMq1YcTJ/hmxIJfSsPgPJjLQI1WICOljXRJv G/LXDFv7ek86VE4pbm6SnH+eR8JJ1P20m2jpWnLw+b/wH5Cg9fx1jEtr7BJyw5cVsG vLofdaAeLP4sKP53WisuMOXbSQvDOqfrLc/syDBolKYuGKHHeJ82AJqgAo9kl29JGR KxeTYhnM2pwrr7DPbzesCUaBCZLuOEV+m7Wlenssza2CHpdo9PqqmI3WaTb6L+XjJ9 A04dWBUsIUvsDR0KOhe0Vy63tJGvygbgHSLmHn0QiaztLQCd7uL4oks343kJV2E0Wa mUjB6NZ4QmM9A== From: Thomas Gleixner To: Florian Eckert Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Eckert.Florian@googlemail.com, ms@dev.tdt.de, Ricardo Neri Subject: Re: [PATCH 2/2] irqchip: Add Lightning Mountain irqchip support In-Reply-To: <6b059429a3db61dffd53a280dc2d6278@dev.tdt.de> References: <20260318-irq-intel-soc-msi-v1-0-0e8cdf844fa8@dev.tdt.de> <20260318-irq-intel-soc-msi-v1-2-0e8cdf844fa8@dev.tdt.de> <87v7eqk8pv.ffs@tglx> <6b059429a3db61dffd53a280dc2d6278@dev.tdt.de> Date: Mon, 23 Mar 2026 22:15:57 +0100 Message-ID: <87341qi6wi.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Mon, Mar 23 2026 at 13:14, Florian Eckert wrote: >>> + domain =3D irq_domain_create_hierarchy(x86_vector_domain, 0, >>=20 >> So this is hardwired to the vector domain and does not allow the >> interrupts to be remapped? Those SoCs have VT-x which implies interrupt >> remapping support. But what do I know about the infinite wisdom of >> hardware designers. >>=20 >> TBH, if they decided to hardwire it to the vector domain, then they are >> begging for a cluebat treatment. > > Unfortunately, I don=E2=80=99t have a detailed hardware description for t= his > IP block. All I have from the Maxlinear is this driver [1] from > their SDK. Sigh. >> #2 NMI routing >>=20 >> There has been attempts to implement that before in a clean way. The >> patch set dried out, but the underlying changes for NMI support are >> still valid and Ricardo (CC'ed) is working on them again, IIRC. See: >>=20 >> https://lore.kernel.org/lkml/20230301234753.28582-1-ricardo.neri-caldero= n@linux.intel.com/ > > The v7 is already about two years old =E2=80=93 let=E2=80=99s see if ther= e=E2=80=99s anything > else coming. > > All in all, thank you for taking the time to look at this. I=E2=80=99ll g= o back > to the drawing board and have another closer look at it. I'd start with the non-NMI part and by that time you got that going, Ricardo might have an updated version ready. Thanks, tglx