Merge branch 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 iommu changes from Ingo Molnar: "Make it easier to turn off the old AMD GART code" * 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/iommu: Clean up the CONFIG_GART_IOMMU config option a bit x86/iommu: Don't make AMD_GART depend on EXPERT and default y
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Коммит
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@ -757,20 +757,25 @@ config DMI
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BIOS code.
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BIOS code.
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config GART_IOMMU
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config GART_IOMMU
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bool "GART IOMMU support" if EXPERT
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bool "Old AMD GART IOMMU support"
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default y
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select SWIOTLB
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select SWIOTLB
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depends on X86_64 && PCI && AMD_NB
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depends on X86_64 && PCI && AMD_NB
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---help---
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---help---
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Support for full DMA access of devices with 32bit memory access only
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Provides a driver for older AMD Athlon64/Opteron/Turion/Sempron
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on systems with more than 3GB. This is usually needed for USB,
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GART based hardware IOMMUs.
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sound, many IDE/SATA chipsets and some other devices.
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Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART
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The GART supports full DMA access for devices with 32-bit access
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based hardware IOMMU and a software bounce buffer based IOMMU used
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limitations, on systems with more than 3 GB. This is usually needed
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on Intel systems and as fallback.
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for USB, sound, many IDE/SATA chipsets and some other devices.
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The code is only active when needed (enough memory and limited
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device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified
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Newer systems typically have a modern AMD IOMMU, supported via
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too.
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the CONFIG_AMD_IOMMU=y config option.
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In normal configurations this driver is only active when needed:
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there's more than 3 GB of memory and the system contains a
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32-bit limited device.
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If unsure, say Y.
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config CALGARY_IOMMU
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config CALGARY_IOMMU
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bool "IBM Calgary IOMMU support"
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bool "IBM Calgary IOMMU support"
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