Patchwork [1/2,Maverick] UBUNTU: [Config] Enable CONFIG_INTR_REMAP=y

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Submitter Leann Ogasawara
Date June 23, 2010, 12:54 a.m.
Message ID <1277254470.6003.736.camel@emiko>
Download mbox | patch
Permalink /patch/56581/
State Accepted
Delegated to: Leann Ogasawara
Headers show

Comments

Leann Ogasawara - June 23, 2010, 12:54 a.m.
Interrupt-remapping is part of the Intel Virtualization Technology for
Directed I/O architecture.  The specification can be found from:

http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf

It's been requested (I've CC'd Yinying) that we enable the
CONFIG_INTR_REMAP option in Maverick.  Even though it's noted as
EXPERIMENTAL in the Kconfig, testing from Intel has shown it to be
stable.

BugLink: http://bugs.launchpad.net/bugs/597091

config INTR_REMAP
        bool "Support for Interrupt Remapping (EXPERIMENTAL)"
        depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI && EXPERIMENTAL
        ---help---
          Supports Interrupt remapping for IO-APIC and MSI devices.
          To use x2apic mode in the CPU's which support x2APIC enhancements or
          to support platforms with CPU's having > 8 bit APIC ID, say Y.
Stefan Bader - June 23, 2010, 7:03 a.m.
Seems to be good enough reasoning to have it turned on now (which would give
time to have it tested)

On 06/23/2010 02:54 AM, Leann Ogasawara wrote:
> Interrupt-remapping is part of the Intel Virtualization Technology for
> Directed I/O architecture.  The specification can be found from:
> 
> http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf
> 
> It's been requested (I've CC'd Yinying) that we enable the
> CONFIG_INTR_REMAP option in Maverick.  Even though it's noted as
> EXPERIMENTAL in the Kconfig, testing from Intel has shown it to be
> stable.
> 
> BugLink: http://bugs.launchpad.net/bugs/597091
> 
> config INTR_REMAP
>         bool "Support for Interrupt Remapping (EXPERIMENTAL)"
>         depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI && EXPERIMENTAL
>         ---help---
>           Supports Interrupt remapping for IO-APIC and MSI devices.
>           To use x2apic mode in the CPU's which support x2APIC enhancements or
>           to support platforms with CPU's having > 8 bit APIC ID, say Y.
> 
> =====
> 
>>From 070368f064201158569e0a57e7cdd7d7544a4939 Mon Sep 17 00:00:00 2001
> From: Leann Ogasawara <leann.ogasawara@canonical.com>
> Date: Tue, 22 Jun 2010 12:42:35 -0700
> Subject: [PATCH 1/2] UBUNTU: [Config] Enable CONFIG_INTR_REMAP=y
> 
> Interrupt-remapping is part of the Intel Virtualization Technology for
> Directed I/O architecture and the specification can be found from:
> 
> http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf
> 
> BugLink: http://bugs.launchpad.net/bugs/597091
> 
> Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
> ---
>  debian.master/config/amd64/config.common.amd64 |    1 +
>  debian.master/config/armel/config.common.armel |    1 +
>  debian.master/config/config.common.ubuntu      |    2 +-
>  debian.master/config/i386/config.common.i386   |    1 +
>  4 files changed, 4 insertions(+), 1 deletions(-)
> 
> diff --git a/debian.master/config/amd64/config.common.amd64 b/debian.master/config/amd64/config.common.amd64
> index 783b7ac..9a0c022 100644
> --- a/debian.master/config/amd64/config.common.amd64
> +++ b/debian.master/config/amd64/config.common.amd64
> @@ -72,6 +72,7 @@ CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
>  CONFIG_INPUT_JOYDEV=m
>  CONFIG_INPUT_JOYSTICK=y
>  CONFIG_INPUT_TOUCHSCREEN=y
> +CONFIG_INTR_REMAP=y
>  CONFIG_IOMMU_API=y
>  CONFIG_IOMMU_HELPER=y
>  CONFIG_IPMI_HANDLER=m
> diff --git a/debian.master/config/armel/config.common.armel b/debian.master/config/armel/config.common.armel
> index 262a404..f994606 100644
> --- a/debian.master/config/armel/config.common.armel
> +++ b/debian.master/config/armel/config.common.armel
> @@ -27,6 +27,7 @@ CONFIG_FONTS=y
>  CONFIG_HAVE_AOUT=y
>  CONFIG_HAVE_GENERIC_DMA_COHERENT=y
>  # CONFIG_HUGETLB_PAGE is not set
> +# CONFIG_INTR_REMAP is not set
>  # CONFIG_IPMI_HANDLER is not set
>  # CONFIG_LAPBETHER is not set
>  # CONFIG_MFD_JANZ_CMODIO is not set
> diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu
> index 231120b..85258f1 100644
> --- a/debian.master/config/config.common.ubuntu
> +++ b/debian.master/config/config.common.ubuntu
> @@ -1974,7 +1974,6 @@ CONFIG_INTEL_IDLE=m
>  CONFIG_INTEL_IOATDMA=m
>  CONFIG_INTEL_MENLOW=m
>  CONFIG_INTEL_SCU_IPC=y
> -# CONFIG_INTR_REMAP is not set
>  # CONFIG_IOMMU_DEBUG is not set
>  # CONFIG_IOMMU_STRESS is not set
>  CONFIG_IOSCHED_CFQ=y
> @@ -5001,6 +5000,7 @@ CONFIG_X86_TSC=y
>  # CONFIG_X86_VERBOSE_BOOTUP is not set
>  # CONFIG_X86_VSMP is not set
>  CONFIG_X86_WP_WORKS_OK=y
> +# CONFIG_X86_X2APIC is not set
>  CONFIG_X86_XADD=y
>  CONFIG_XEN=y
>  CONFIG_XENFS=m
> diff --git a/debian.master/config/i386/config.common.i386 b/debian.master/config/i386/config.common.i386
> index 92110fd..9c0cd82 100644
> --- a/debian.master/config/i386/config.common.i386
> +++ b/debian.master/config/i386/config.common.i386
> @@ -74,6 +74,7 @@ CONFIG_ILLEGAL_POINTER_VALUE=0
>  CONFIG_INPUT_JOYDEV=m
>  CONFIG_INPUT_JOYSTICK=y
>  CONFIG_INPUT_TOUCHSCREEN=y
> +# CONFIG_INTR_REMAP is not set
>  # CONFIG_IOMMU_API is not set
>  # CONFIG_IOMMU_HELPER is not set
>  CONFIG_IPMI_HANDLER=m
Tim Gardner - June 23, 2010, 1:07 p.m.
On 06/22/2010 06:54 PM, Leann Ogasawara wrote:
> Interrupt-remapping is part of the Intel Virtualization Technology for
> Directed I/O architecture.  The specification can be found from:
>
> http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf
>
> It's been requested (I've CC'd Yinying) that we enable the
> CONFIG_INTR_REMAP option in Maverick.  Even though it's noted as
> EXPERIMENTAL in the Kconfig, testing from Intel has shown it to be
> stable.
>
> BugLink: http://bugs.launchpad.net/bugs/597091
>
> config INTR_REMAP
>          bool "Support for Interrupt Remapping (EXPERIMENTAL)"
>          depends on X86_64&&  X86_IO_APIC&&  PCI_MSI&&  ACPI&&  EXPERIMENTAL
>          ---help---
>            Supports Interrupt remapping for IO-APIC and MSI devices.
>            To use x2apic mode in the CPU's which support x2APIC enhancements or
>            to support platforms with CPU's having>  8 bit APIC ID, say Y.
>
> =====
>

Well, this complicates things. Better keep "nointremap" in your bag of 
tricks when debugging why Intel server devices don't work.

rtg
Leann Ogasawara - June 24, 2010, 10:56 p.m.
Applied to Maverick linux master.

Thanks,
Leann

On Tue, 2010-06-22 at 17:54 -0700, Leann Ogasawara wrote: 
> Interrupt-remapping is part of the Intel Virtualization Technology for
> Directed I/O architecture.  The specification can be found from:
> 
> http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf
> 
> It's been requested (I've CC'd Yinying) that we enable the
> CONFIG_INTR_REMAP option in Maverick.  Even though it's noted as
> EXPERIMENTAL in the Kconfig, testing from Intel has shown it to be
> stable.
> 
> BugLink: http://bugs.launchpad.net/bugs/597091
> 
> config INTR_REMAP
>         bool "Support for Interrupt Remapping (EXPERIMENTAL)"
>         depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI && EXPERIMENTAL
>         ---help---
>           Supports Interrupt remapping for IO-APIC and MSI devices.
>           To use x2apic mode in the CPU's which support x2APIC enhancements or
>           to support platforms with CPU's having > 8 bit APIC ID, say Y.
> 
> =====
> 
> >From 070368f064201158569e0a57e7cdd7d7544a4939 Mon Sep 17 00:00:00 2001
> From: Leann Ogasawara <leann.ogasawara@canonical.com>
> Date: Tue, 22 Jun 2010 12:42:35 -0700
> Subject: [PATCH 1/2] UBUNTU: [Config] Enable CONFIG_INTR_REMAP=y
> 
> Interrupt-remapping is part of the Intel Virtualization Technology for
> Directed I/O architecture and the specification can be found from:
> 
> http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf
> 
> BugLink: http://bugs.launchpad.net/bugs/597091
> 
> Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
> ---
>  debian.master/config/amd64/config.common.amd64 |    1 +
>  debian.master/config/armel/config.common.armel |    1 +
>  debian.master/config/config.common.ubuntu      |    2 +-
>  debian.master/config/i386/config.common.i386   |    1 +
>  4 files changed, 4 insertions(+), 1 deletions(-)
> 
> diff --git a/debian.master/config/amd64/config.common.amd64 b/debian.master/config/amd64/config.common.amd64
> index 783b7ac..9a0c022 100644
> --- a/debian.master/config/amd64/config.common.amd64
> +++ b/debian.master/config/amd64/config.common.amd64
> @@ -72,6 +72,7 @@ CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
>  CONFIG_INPUT_JOYDEV=m
>  CONFIG_INPUT_JOYSTICK=y
>  CONFIG_INPUT_TOUCHSCREEN=y
> +CONFIG_INTR_REMAP=y
>  CONFIG_IOMMU_API=y
>  CONFIG_IOMMU_HELPER=y
>  CONFIG_IPMI_HANDLER=m
> diff --git a/debian.master/config/armel/config.common.armel b/debian.master/config/armel/config.common.armel
> index 262a404..f994606 100644
> --- a/debian.master/config/armel/config.common.armel
> +++ b/debian.master/config/armel/config.common.armel
> @@ -27,6 +27,7 @@ CONFIG_FONTS=y
>  CONFIG_HAVE_AOUT=y
>  CONFIG_HAVE_GENERIC_DMA_COHERENT=y
>  # CONFIG_HUGETLB_PAGE is not set
> +# CONFIG_INTR_REMAP is not set
>  # CONFIG_IPMI_HANDLER is not set
>  # CONFIG_LAPBETHER is not set
>  # CONFIG_MFD_JANZ_CMODIO is not set
> diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu
> index 231120b..85258f1 100644
> --- a/debian.master/config/config.common.ubuntu
> +++ b/debian.master/config/config.common.ubuntu
> @@ -1974,7 +1974,6 @@ CONFIG_INTEL_IDLE=m
>  CONFIG_INTEL_IOATDMA=m
>  CONFIG_INTEL_MENLOW=m
>  CONFIG_INTEL_SCU_IPC=y
> -# CONFIG_INTR_REMAP is not set
>  # CONFIG_IOMMU_DEBUG is not set
>  # CONFIG_IOMMU_STRESS is not set
>  CONFIG_IOSCHED_CFQ=y
> @@ -5001,6 +5000,7 @@ CONFIG_X86_TSC=y
>  # CONFIG_X86_VERBOSE_BOOTUP is not set
>  # CONFIG_X86_VSMP is not set
>  CONFIG_X86_WP_WORKS_OK=y
> +# CONFIG_X86_X2APIC is not set
>  CONFIG_X86_XADD=y
>  CONFIG_XEN=y
>  CONFIG_XENFS=m
> diff --git a/debian.master/config/i386/config.common.i386 b/debian.master/config/i386/config.common.i386
> index 92110fd..9c0cd82 100644
> --- a/debian.master/config/i386/config.common.i386
> +++ b/debian.master/config/i386/config.common.i386
> @@ -74,6 +74,7 @@ CONFIG_ILLEGAL_POINTER_VALUE=0
>  CONFIG_INPUT_JOYDEV=m
>  CONFIG_INPUT_JOYSTICK=y
>  CONFIG_INPUT_TOUCHSCREEN=y
> +# CONFIG_INTR_REMAP is not set
>  # CONFIG_IOMMU_API is not set
>  # CONFIG_IOMMU_HELPER is not set
>  CONFIG_IPMI_HANDLER=m
> -- 
> 1.7.0.4
> 
> 
> 
>

Patch

=====

>From 070368f064201158569e0a57e7cdd7d7544a4939 Mon Sep 17 00:00:00 2001
From: Leann Ogasawara <leann.ogasawara@canonical.com>
Date: Tue, 22 Jun 2010 12:42:35 -0700
Subject: [PATCH 1/2] UBUNTU: [Config] Enable CONFIG_INTR_REMAP=y

Interrupt-remapping is part of the Intel Virtualization Technology for
Directed I/O architecture and the specification can be found from:

http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf

BugLink: http://bugs.launchpad.net/bugs/597091

Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
---
 debian.master/config/amd64/config.common.amd64 |    1 +
 debian.master/config/armel/config.common.armel |    1 +
 debian.master/config/config.common.ubuntu      |    2 +-
 debian.master/config/i386/config.common.i386   |    1 +
 4 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/debian.master/config/amd64/config.common.amd64 b/debian.master/config/amd64/config.common.amd64
index 783b7ac..9a0c022 100644
--- a/debian.master/config/amd64/config.common.amd64
+++ b/debian.master/config/amd64/config.common.amd64
@@ -72,6 +72,7 @@  CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
 CONFIG_INPUT_JOYDEV=m
 CONFIG_INPUT_JOYSTICK=y
 CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_INTR_REMAP=y
 CONFIG_IOMMU_API=y
 CONFIG_IOMMU_HELPER=y
 CONFIG_IPMI_HANDLER=m
diff --git a/debian.master/config/armel/config.common.armel b/debian.master/config/armel/config.common.armel
index 262a404..f994606 100644
--- a/debian.master/config/armel/config.common.armel
+++ b/debian.master/config/armel/config.common.armel
@@ -27,6 +27,7 @@  CONFIG_FONTS=y
 CONFIG_HAVE_AOUT=y
 CONFIG_HAVE_GENERIC_DMA_COHERENT=y
 # CONFIG_HUGETLB_PAGE is not set
+# CONFIG_INTR_REMAP is not set
 # CONFIG_IPMI_HANDLER is not set
 # CONFIG_LAPBETHER is not set
 # CONFIG_MFD_JANZ_CMODIO is not set
diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu
index 231120b..85258f1 100644
--- a/debian.master/config/config.common.ubuntu
+++ b/debian.master/config/config.common.ubuntu
@@ -1974,7 +1974,6 @@  CONFIG_INTEL_IDLE=m
 CONFIG_INTEL_IOATDMA=m
 CONFIG_INTEL_MENLOW=m
 CONFIG_INTEL_SCU_IPC=y
-# CONFIG_INTR_REMAP is not set
 # CONFIG_IOMMU_DEBUG is not set
 # CONFIG_IOMMU_STRESS is not set
 CONFIG_IOSCHED_CFQ=y
@@ -5001,6 +5000,7 @@  CONFIG_X86_TSC=y
 # CONFIG_X86_VERBOSE_BOOTUP is not set
 # CONFIG_X86_VSMP is not set
 CONFIG_X86_WP_WORKS_OK=y
+# CONFIG_X86_X2APIC is not set
 CONFIG_X86_XADD=y
 CONFIG_XEN=y
 CONFIG_XENFS=m
diff --git a/debian.master/config/i386/config.common.i386 b/debian.master/config/i386/config.common.i386
index 92110fd..9c0cd82 100644
--- a/debian.master/config/i386/config.common.i386
+++ b/debian.master/config/i386/config.common.i386
@@ -74,6 +74,7 @@  CONFIG_ILLEGAL_POINTER_VALUE=0
 CONFIG_INPUT_JOYDEV=m
 CONFIG_INPUT_JOYSTICK=y
 CONFIG_INPUT_TOUCHSCREEN=y
+# CONFIG_INTR_REMAP is not set
 # CONFIG_IOMMU_API is not set
 # CONFIG_IOMMU_HELPER is not set
 CONFIG_IPMI_HANDLER=m