linux-kernel - Re: [PATCH v2 08/13] x86/irq: Install posted MSI notification handler

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Message-ID: <87bk6f262i.ffs@tglx>
Date: Thu, 11 Apr 2024 18:54:29 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Jacob Pan <jacob.jun.pan@...ux.intel.com>, LKML
 <linux-kernel@...r.kernel.org>, X86 Kernel <x86@...nel.org>, Peter
 Zijlstra <peterz@...radead.org>, iommu@...ts.linux.dev, Lu Baolu
 <baolu.lu@...ux.intel.com>, kvm@...r.kernel.org, Dave Hansen
 <dave.hansen@...el.com>, Joerg Roedel <joro@...tes.org>, "H. Peter Anvin"
 <hpa@...or.com>, Borislav Petkov <bp@...en8.de>, Ingo Molnar
 <mingo@...hat.com>
Cc: Paul Luse <paul.e.luse@...el.com>, Dan Williams
 <dan.j.williams@...el.com>, Jens Axboe <axboe@...nel.dk>, Raj Ashok
 <ashok.raj@...el.com>, "Tian, Kevin" <kevin.tian@...el.com>,
 maz@...nel.org, seanjc@...gle.com, Robin Murphy <robin.murphy@....com>,
 jim.harris@...sung.com, a.manzanares@...sung.com, Bjorn Helgaas
 <helgaas@...nel.org>, guang.zeng@...el.com, robert.hoo.linux@...il.com,
 Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: Re: [PATCH v2 08/13] x86/irq: Install posted MSI notification handler

On Fri, Apr 05 2024 at 15:31, Jacob Pan wrote:
>  
>  #ifdef CONFIG_SMP
> diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c
> index fc37c8d83daf..f445bec516a0 100644
> --- a/arch/x86/kernel/idt.c
> +++ b/arch/x86/kernel/idt.c
> @@ -163,6 +163,9 @@ static const __initconst struct idt_data apic_idts[] = {
>  # endif
>  	INTG(SPURIOUS_APIC_VECTOR,		asm_sysvec_spurious_apic_interrupt),
>  	INTG(ERROR_APIC_VECTOR,			asm_sysvec_error_interrupt),
> +# ifdef CONFIG_X86_POSTED_MSI
> +	INTG(POSTED_MSI_NOTIFICATION_VECTOR,	asm_sysvec_posted_msi_notification),
> +# endif
>  #endif
>  };

Obviously lacks FRED support...