From: Sean Christopherson <seanjc@google.com>
To: Kevin Tian <kevin.tian@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>,
LKML <linux-kernel@vger.kernel.org>, X86 Kernel <x86@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
Thomas Gleixner <tglx@linutronix.de>,
Lu Baolu <baolu.lu@linux.intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Joerg Roedel <joro@8bytes.org>, Peter Anvin <hpa@zytor.com>,
Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
Paul E Luse <paul.e.luse@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Jens Axboe <axboe@kernel.dk>, Ashok Raj <ashok.raj@intel.com>,
"maz@kernel.org" <maz@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
"jim.harris@samsung.com" <jim.harris@samsung.com>,
"a.manzanares@samsung.com" <a.manzanares@samsung.com>,
Bjorn Helgaas <helgaas@kernel.org>,
Guang Zeng <guang.zeng@intel.com>,
"robert.hoo.linux@gmail.com" <robert.hoo.linux@gmail.com>
Subject: Re: [PATCH v2 05/13] x86/irq: Reserve a per CPU IDT vector for posted MSIs
Date: Fri, 12 Apr 2024 07:27:30 -0700 [thread overview]
Message-ID: <ZhlEh7-NoknHcNX7@google.com> (raw)
In-Reply-To: <BN9PR11MB527609928EA2290709CDB3E78C042@BN9PR11MB5276.namprd11.prod.outlook.com>
On Fri, Apr 12, 2024, Kevin Tian wrote:
> > From: Jacob Pan <jacob.jun.pan@linux.intel.com>
> > Sent: Saturday, April 6, 2024 6:31 AM
> >
> > +/*
> > + * Posted interrupt notification vector for all device MSIs delivered to
> > + * the host kernel.
> > + */
> > +#define POSTED_MSI_NOTIFICATION_VECTOR 0xeb
> > #define NR_VECTORS 256
> >
>
> Every interrupt is kind of a notification.
FWIW, I find value in having "notification" in the name to differentiate between
the IRQ that is notifying the CPU that there's a posted IRQ to be processed, and
the posted IRQ itself.
next prev parent reply other threads:[~2024-04-12 14:27 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-05 22:30 [PATCH v2 00/13] Coalesced Interrupt Delivery with posted MSI Jacob Pan
2024-04-05 22:30 ` [PATCH v2 01/13] x86/irq: Move posted interrupt descriptor out of vmx code Jacob Pan
2024-04-17 0:34 ` Sean Christopherson
2024-04-17 18:33 ` Jacob Pan
2024-04-05 22:30 ` [PATCH v2 02/13] x86/irq: Unionize PID.PIR for 64bit access w/o casting Jacob Pan
2024-04-05 22:31 ` [PATCH v2 03/13] x86/irq: Remove bitfields in posted interrupt descriptor Jacob Pan
2024-04-17 0:39 ` Sean Christopherson
2024-04-17 18:01 ` Jacob Pan
2024-04-18 17:30 ` Thomas Gleixner
2024-04-18 18:10 ` Jacob Pan
2024-04-05 22:31 ` [PATCH v2 04/13] x86/irq: Add a Kconfig option for posted MSI Jacob Pan
2024-04-05 22:31 ` [PATCH v2 05/13] x86/irq: Reserve a per CPU IDT vector for posted MSIs Jacob Pan
2024-04-11 16:51 ` Thomas Gleixner
2024-04-15 18:53 ` Jacob Pan
2024-04-15 20:43 ` Jacob Pan
2024-04-19 4:00 ` Thomas Gleixner
2024-04-19 20:07 ` Arnaldo Carvalho de Melo
2024-04-22 22:32 ` Jacob Pan
2024-04-12 9:14 ` Tian, Kevin
2024-04-12 14:27 ` Sean Christopherson [this message]
2024-04-16 3:45 ` Tian, Kevin
2024-04-05 22:31 ` [PATCH v2 06/13] x86/irq: Set up per host CPU posted interrupt descriptors Jacob Pan
2024-04-12 9:16 ` Tian, Kevin
2024-04-12 17:54 ` Jacob Pan
2024-04-05 22:31 ` [PATCH v2 07/13] x86/irq: Factor out calling ISR from common_interrupt Jacob Pan
2024-04-12 9:21 ` Tian, Kevin
2024-04-12 16:50 ` Jacob Pan
2024-04-05 22:31 ` [PATCH v2 08/13] x86/irq: Install posted MSI notification handler Jacob Pan
2024-04-11 7:52 ` Tian, Kevin
2024-04-11 17:38 ` Jacob Pan
2024-04-11 16:54 ` Thomas Gleixner
2024-04-11 18:29 ` Jacob Pan
2024-04-05 22:31 ` [PATCH v2 09/13] x86/irq: Factor out common code for checking pending interrupts Jacob Pan
2024-04-05 22:31 ` [PATCH v2 10/13] x86/irq: Extend checks for pending vectors to posted interrupts Jacob Pan
2024-04-12 9:25 ` Tian, Kevin
2024-04-12 18:23 ` Jacob Pan
2024-04-16 3:47 ` Tian, Kevin
2024-04-05 22:31 ` [PATCH v2 11/13] iommu/vt-d: Make posted MSI an opt-in cmdline option Jacob Pan
2024-04-06 4:31 ` Robert Hoo
2024-04-08 23:33 ` Jacob Pan
2024-04-13 10:59 ` Robert Hoo
2024-04-12 9:31 ` Tian, Kevin
2024-04-15 23:20 ` Jacob Pan
2024-04-05 22:31 ` [PATCH v2 12/13] iommu/vt-d: Add an irq_chip for posted MSIs Jacob Pan
2024-04-12 9:36 ` Tian, Kevin
2024-04-16 22:15 ` Jacob Pan
2024-04-05 22:31 ` [PATCH v2 13/13] iommu/vt-d: Enable posted mode for device MSIs Jacob Pan
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