user/sven/linux.git/include/linux/dmar.h, branch v3.10.44

x86, iommu/vt-d: Clean up interfaces for interrupt remapping

2012-05-07T12:35:00Z

Remove the Intel specific interfaces from dmar.h and remove asm/irq_remapping.h which is only used for io_apic.c anyway. Signed-off-by: Joerg Roedel Acked-by: Yinghai Lu Cc: David Woodhouse Cc: Alex Williamson Signed-off-by: Suresh Siddha Signed-off-by: Joerg Roedel

iommu/vt-d: Convert free_irte into a remap_ops callback

2012-05-07T12:34:59Z

The operation for releasing a remapping entry is iommu specific too. Signed-off-by: Joerg Roedel Acked-by: Yinghai Lu Cc: David Woodhouse Cc: Alex Williamson Signed-off-by: Suresh Siddha Signed-off-by: Joerg Roedel

iommu/vt-d: Convert missing apic.c intr-remapping call to remap_ops

2012-05-07T12:34:59Z

Convert these calls too: * Disable of remapping hardware * Reenable of remapping hardware * Enable fault handling With that all of arch/x86/kernel/apic/apic.c is converted to use the generic intr-remapping interface. Signed-off-by: Joerg Roedel Acked-by: Yinghai Lu Cc: David Woodhouse Cc: Alex Williamson Signed-off-by: Suresh Siddha Signed-off-by: Joerg Roedel

iommu/vt-d: Make intr-remapping initialization generic

2012-05-07T12:34:59Z

This patch introduces irq_remap_ops to hold implementation specific function pointer to handle interrupt remapping. As the first part the initialization functions for VT-d are converted to these ops. Signed-off-by: Joerg Roedel Acked-by: Yinghai Lu Cc: David Woodhouse Cc: Alex Williamson Signed-off-by: Suresh Siddha Signed-off-by: Joerg Roedel

include/linux/dmar.h: forward-declare struct acpi_dmar_header

2011-11-01T00:30:44Z

x86_64 allnoconfig: In file included from arch/x86/kernel/pci-dma.c:3: include/linux/dmar.h:248: warning: 'struct acpi_dmar_header' declared inside parameter list include/linux/dmar.h:248: warning: its scope is only this definition or declaration, which is probably not what you want Cc: Suresh Siddha Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

iommu: Rename the DMAR and INTR_REMAP config options

2011-09-21T08:22:03Z

Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar

iommu: Move IOMMU specific code to intel-iommu.c

2011-09-21T08:21:54Z

Move the IOMMU specific routines to intel-iommu.c leaving the dmar.c to the common ACPI dmar code shared between DMA-remapping and Interrupt-remapping. Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.282401285@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar

x86, x2apic: Enable the bios request for x2apic optout

2011-09-21T08:21:50Z

On the platforms which are x2apic and interrupt-remapping capable, Linux kernel is enabling x2apic even if the BIOS doesn't. This is to take advantage of the features that x2apic brings in. Some of the OEM platforms are running into issues because of this, as their bios is not x2apic aware. For example, this was resulting in interrupt migration issues on one of the platforms. Also if the BIOS SMI handling uses APIC interface to send SMI's, then the BIOS need to be aware of x2apic mode that OS has enabled. On some of these platforms, BIOS doesn't have a HW mechanism to turnoff the x2apic feature to prevent OS from enabling it. To resolve this mess, recent changes to the VT-d2 specification: http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf includes a mechanism that provides BIOS a way to request system software to opt out of enabling x2apic mode. Look at the x2apic optout flag in the DMAR tables before enabling the x2apic mode in the platform. Also print a warning that we have disabled x2apic based on the BIOS request. Kernel boot parameter "intremap=no_x2apic_optout" can be used to override the BIOS x2apic optout request. Signed-off-by: Youquan Song Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.171766616@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar

dmar, x86: Use function stubs when CONFIG_INTR_REMAP is disabled

2010-11-26T08:57:36Z

The stubs for CONFIG_INTR_REMAP disabled need to be functions instead of values to eliminate build warnings. arch/x86/kernel/apic/apic.c: In function 'lapic_suspend': arch/x86/kernel/apic/apic.c:2060:3: warning: statement with no effect arch/x86/kernel/apic/apic.c: In function 'lapic_resume': arch/x86/kernel/apic/apic.c:2137:3: warning: statement with no effect Reported-and-Tested-by: Fabio Comolli Signed-off-by: Randy Dunlap Cc: Suresh Siddha Cc: Yinghai Lu Cc: David Woodhouse Cc: Jesse Barnes LKML-Reference: <20101122124834.74429004.randy.dunlap@oracle.com> Signed-off-by: Ingo Molnar

Merge branch 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-10-21T21:23:48Z

* 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, iommu: Update header comments with appropriate naming ia64, iommu: Add a dummy iommu_table.h file in IA64. x86, iommu: Fix IOMMU_INIT alignment rules x86, doc: Adding comments about .iommu_table and its neighbors. x86, iommu: Utilize the IOMMU_INIT macros functionality. x86, VT-d: Make Intel VT-d IOMMU use IOMMU_INIT_* macros. x86, GART/AMD-VI: Make AMD GART and IOMMU use IOMMU_INIT_* macros. x86, calgary: Make Calgary IOMMU use IOMMU_INIT_* macros. x86, xen-swiotlb: Make Xen-SWIOTLB use IOMMU_INIT_* macros. x86, swiotlb: Make SWIOTLB use IOMMU_INIT_* macros. x86, swiotlb: Simplify SWIOTLB pci_swiotlb_detect routine. x86, iommu: Add proper dependency sort routine (and sanity check). x86, iommu: Make all IOMMU's detection routines return a value. x86, iommu: Add IOMMU_INIT macros, .iommu_table section, and iommu_table_entry structure