From: Thomas Gleixner <tglx@linutronix.de>
To: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: Julien Thierry <julien.thierry@arm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
Andi Kleen <andi.kleen@intel.com>,
Ashok Raj <ashok.raj@intel.com>, Borislav Petkov <bp@suse.de>,
Tony Luck <tony.luck@intel.com>,
"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
x86@kernel.org, sparclinux@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Jacob Pan <jacob.jun.pan@intel.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
"Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>,
Randy Dunlap <rdunlap@infradead.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Doug Berger <opendmb@gmail.com>,
Palmer Dabbelt <palmer@sifive.com>,
iommu@lists.linux-foundation.org
Subject: Re: [RFC PATCH 03/23] genirq: Introduce IRQF_DELIVER_AS_NMI
Date: Sat, 16 Jun 2018 15:36:28 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.21.1806161528040.1582@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20180616003916.GA6659@voyager>
On Fri, 15 Jun 2018, Ricardo Neri wrote:
> On Fri, Jun 15, 2018 at 09:01:02AM +0100, Julien Thierry wrote:
> > In my patches, I'm not sure there is much to adapt to your work as most of
> > it is arch specific (although I wont say no to another pair of eyes looking
> > at them). From what I've seen of your patches, the point where we converge
> > is that need for some code to be able to tell the irqchip "I want that
> > particular interrupt line to be treated/setup as an NMI".
>
> Indeed, there has to be a generic way for the irqchip to announce that it
> supports configuring an interrupt as NMI... and a way to actually configuring
> it.
There has to be nothing. The irqchip infrastructure might be able to
provide certain aspects of NMI support, perhaps for initialization, but
everything else is fundamentally different and the executional parts simply
cannot use any of the irq chip functions at all.
Thanks,
tglx
next prev parent reply other threads:[~2018-06-16 13:36 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-13 0:57 [RFC PATCH 00/23] Implement an HPET-based hardlockup detector Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 01/23] x86/apic: Add a parameter for the APIC delivery mode Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 02/23] genirq: Introduce IRQD_DELIVER_AS_NMI Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 03/23] genirq: Introduce IRQF_DELIVER_AS_NMI Ricardo Neri
2018-06-13 8:34 ` Peter Zijlstra
2018-06-13 8:59 ` Julien Thierry
2018-06-13 9:20 ` Thomas Gleixner
2018-06-13 9:36 ` Julien Thierry
2018-06-13 9:49 ` Julien Thierry
2018-06-13 9:57 ` Thomas Gleixner
2018-06-13 10:25 ` Julien Thierry
2018-06-13 10:06 ` Marc Zyngier
2018-06-15 2:12 ` Ricardo Neri
2018-06-15 8:01 ` Julien Thierry
2018-06-16 0:39 ` Ricardo Neri
2018-06-16 13:36 ` Thomas Gleixner [this message]
2018-06-13 0:57 ` [RFC PATCH 04/23] iommu/vt-d/irq_remapping: Add support for IRQCHIP_CAN_DELIVER_AS_NMI Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 05/23] x86/msi: " Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 06/23] x86/ioapic: Add support for IRQCHIP_CAN_DELIVER_AS_NMI with interrupt remapping Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 07/23] x86/hpet: Expose more functions to read and write registers Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 08/23] x86/hpet: Calculate ticks-per-second in a separate function Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 09/23] x86/hpet: Reserve timer for the HPET hardlockup detector Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 10/23] x86/hpet: Relocate flag definitions to a header file Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 11/23] x86/hpet: Configure the timer used by the hardlockup detector Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 12/23] kernel/watchdog: Introduce a struct for NMI watchdog operations Ricardo Neri
2018-06-13 7:41 ` Nicholas Piggin
2018-06-13 8:42 ` Peter Zijlstra
2018-06-13 9:26 ` Thomas Gleixner
2018-06-13 11:52 ` Nicholas Piggin
2018-06-14 1:31 ` Ricardo Neri
2018-06-14 2:32 ` Nicholas Piggin
2018-06-14 8:32 ` Thomas Gleixner
2018-06-15 2:21 ` Ricardo Neri
2018-06-14 1:26 ` Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 13/23] watchdog/hardlockup: Define a generic function to detect hardlockups Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 14/23] watchdog/hardlockup: Decouple the hardlockup detector from perf Ricardo Neri
2018-06-13 8:43 ` Peter Zijlstra
2018-06-14 1:19 ` Ricardo Neri
2018-06-14 1:41 ` Nicholas Piggin
2018-06-15 2:23 ` Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 15/23] kernel/watchdog: Add a function to obtain the watchdog_allowed_mask Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 16/23] watchdog/hardlockup: Add an HPET-based hardlockup detector Ricardo Neri
2018-06-13 5:23 ` Randy Dunlap
2018-06-14 1:00 ` Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 17/23] watchdog/hardlockup/hpet: Convert the timer's interrupt to NMI Ricardo Neri
2018-06-13 9:07 ` Peter Zijlstra
2018-06-15 2:07 ` Ricardo Neri
2018-06-13 9:40 ` Thomas Gleixner
2018-06-15 2:03 ` Ricardo Neri
2018-06-15 9:19 ` Thomas Gleixner
2018-06-16 0:51 ` Ricardo Neri
2018-06-16 13:24 ` Thomas Gleixner
2018-06-20 0:15 ` Ricardo Neri
2018-06-20 0:25 ` Randy Dunlap
2018-06-21 0:25 ` Ricardo Neri
2018-06-20 7:47 ` Thomas Gleixner
2018-06-13 0:57 ` [RFC PATCH 18/23] watchdog/hardlockup/hpet: Add the NMI watchdog operations Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 19/23] watchdog/hardlockup: Make arch_touch_nmi_watchdog() to hpet-based implementation Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 20/23] watchdog/hardlockup/hpet: Rotate interrupt among all monitored CPUs Ricardo Neri
2018-06-13 9:48 ` Thomas Gleixner
2018-06-15 2:16 ` Ricardo Neri
2018-06-15 10:29 ` Thomas Gleixner
2018-06-16 0:46 ` Ricardo Neri
2018-06-16 13:27 ` Thomas Gleixner
2018-06-13 0:57 ` [RFC PATCH 21/23] watchdog/hardlockup/hpet: Adjust timer expiration on the number of " Ricardo Neri
2018-06-13 0:57 ` [RFC PATCH 22/23] watchdog/hardlockup/hpet: Only enable the HPET watchdog via a boot parameter Ricardo Neri
2018-06-13 5:26 ` Randy Dunlap
2018-06-14 0:58 ` Ricardo Neri
2018-06-14 3:30 ` Randy Dunlap
2018-06-13 0:57 ` [RFC PATCH 23/23] watchdog/hardlockup: Activate the HPET-based lockup detector Ricardo Neri
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