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From: Dexuan Cui <decui@microsoft.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	LKML <linux-kernel@vger.kernel.org>
Cc: "x86@kernel.org" <x86@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Marc Zyngier <marc.zyngier@arm.com>,
	KY Srinivasan <kys@microsoft.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
	Josh Poulson <jopoulso@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Simon Xiao <sixiao@microsoft.com>,
	Saeed Mahameed <saeedm@mellanox.com>,
	"Mihai Costache (Cloudbase Solutions SRL)"
	<v-micos@microsoft.com>, Jork Loeser <Jork.Loeser@microsoft.com>
Subject: RE: [patch 3/3] x86/vector/msi: Select CONFIG_GENERIC_IRQ_RESERVATION_MODE
Date: Tue, 17 Oct 2017 18:59:27 +0000	[thread overview]
Message-ID: <KL1P15301MB000624AF90FB90B39BE84160BF4C0@KL1P15301MB0006.APCP153.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20171017075600.527569354@linutronix.de>

> From: Thomas Gleixner [mailto:tglx@linutronix.de]
> Sent: Tuesday, October 17, 2017 12:55 AM
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -95,7 +95,7 @@ config X86
>  	select GENERIC_IRQ_MATRIX_ALLOCATOR	if X86_LOCAL_APIC
>  	select GENERIC_IRQ_MIGRATION		if SMP
>  	select GENERIC_IRQ_PROBE
> -	select GENERIC_IRQ_SHOW
> +	select GENERIC_IRQ_RESERVATION_MODE
>  	select GENERIC_PENDING_IRQ		if SMP
>  	select GENERIC_SMP_IDLE_THREAD
>  	select GENERIC_STRNCPY_FROM_USER

Hi Thomas,
It looks you removed GENERIC_IRQ_SHOW by accident?

I got this build error:
...
  LD      vmlinux.o
  MODPOST vmlinux.o
fs/proc/interrupts.o:(.rodata+0x118): undefined reference to `show_interrupts'
Makefile:1000: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

Adding GENERIC_IRQ_SHOW back can fix the build failure, and with the
pachset Hyper-V PCI pass-through can work fine.

Thanks,
-- Dexuan

WARNING: multiple messages have this Message-ID (diff)
From: Dexuan Cui <decui@microsoft.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	LKML <linux-kernel@vger.kernel.org>
Cc: "x86@kernel.org" <x86@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Marc Zyngier <marc.zyngier@arm.com>,
	KY Srinivasan <kys@microsoft.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
	Josh Poulson <jopoulso@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Simon Xiao <sixiao@microsoft.com>,
	Saeed Mahameed <saeedm@mellanox.com>,
	"Mihai Costache (Cloudbase Solutions SRL)"
	<v-micos@microsoft.com>, Jork Loeser <Jork.Loeser@microsoft.com>
Subject: RE: [patch 3/3] x86/vector/msi: Select CONFIG_GENERIC_IRQ_RESERVATION_MODE
Date: Tue, 17 Oct 2017 18:59:27 +0000	[thread overview]
Message-ID: <KL1P15301MB000624AF90FB90B39BE84160BF4C0@KL1P15301MB0006.APCP153.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20171017075600.527569354@linutronix.de>

> From: Thomas Gleixner [mailto:tglx@linutronix.de]
> Sent: Tuesday, October 17, 2017 12:55 AM
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -95,7 +95,7 @@ config X86
>  	select GENERIC_IRQ_MATRIX_ALLOCATOR	if X86_LOCAL_APIC
>  	select GENERIC_IRQ_MIGRATION		if SMP
>  	select GENERIC_IRQ_PROBE
> -	select GENERIC_IRQ_SHOW
> +	select GENERIC_IRQ_RESERVATION_MODE
>  	select GENERIC_PENDING_IRQ		if SMP
>  	select GENERIC_SMP_IDLE_THREAD
>  	select GENERIC_STRNCPY_FROM_USER

Hi Thomas,
It looks you removed GENERIC_IRQ_SHOW by accident?

I got this build error:
...
  LD      vmlinux.o
  MODPOST vmlinux.o
fs/proc/interrupts.o:(.rodata+0x118): undefined reference to `show_interrup=
ts'
Makefile:1000: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

Adding GENERIC_IRQ_SHOW back can fix the build failure, and with the
pachset Hyper-V PCI pass-through can work fine.

Thanks,
-- Dexuan

  reply	other threads:[~2017-10-17 19:00 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-17  7:54 [patch 0/3] x86/PCI/MSI: Make sure that irq reservation mode works everywhere Thomas Gleixner
2017-10-17  7:54 ` [patch 1/3] genirq: Add config option for reservation mode Thomas Gleixner
2017-10-17  7:54   ` Thomas Gleixner
2017-10-18 13:42   ` [tip:x86/apic] " tip-bot for Thomas Gleixner
2017-10-17  7:54 ` [patch 2/3] PCI/MSI: Set MSI_FLAG_MUST_REACTIVATE in core code Thomas Gleixner
2017-10-17  7:54   ` Thomas Gleixner
2017-10-17 12:28   ` Thomas Gleixner
2017-10-18 13:43   ` [tip:x86/apic] " tip-bot for Thomas Gleixner
2017-10-17  7:54 ` [patch 3/3] x86/vector/msi: Select CONFIG_GENERIC_IRQ_RESERVATION_MODE Thomas Gleixner
2017-10-17  7:54   ` Thomas Gleixner
2017-10-17 18:59   ` Dexuan Cui [this message]
2017-10-17 18:59     ` Dexuan Cui
2017-10-17 21:49     ` Thomas Gleixner
2017-10-18 13:43   ` [tip:x86/apic] " tip-bot for Thomas Gleixner
2017-10-20 23:01 ` [patch 0/3] x86/PCI/MSI: Make sure that irq reservation mode works everywhere Bjorn Helgaas
2017-10-21  7:19   ` Thomas Gleixner

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