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df41017eaf
The only thing remaining of the machvecs is a few checks if we are running on an SGI UV system. Replace those with the existing is_uv_system() check that has been rewritten to simply check the OEM ID directly. That leaves us with a generic kernel that is as fast as the previous DIG/ZX1/UV kernels, but can support all hardware. Support for UV and the HP SBA IOMMU is now optional based on new config options. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lkml.kernel.org/r/20190813072514.23299-27-hch@lst.de Signed-off-by: Tony Luck <tony.luck@intel.com>
56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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choice
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prompt "Physical memory granularity"
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default IA64_GRANULE_64MB
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config IA64_GRANULE_16MB
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bool "16MB"
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help
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IA-64 identity-mapped regions use a large page size called "granules".
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Select "16MB" for a small granule size.
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Select "64MB" for a large granule size. This is the current default.
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config IA64_GRANULE_64MB
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bool "64MB"
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depends on BROKEN
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endchoice
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config IA64_PRINT_HAZARDS
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bool "Print possible IA-64 dependency violations to console"
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depends on DEBUG_KERNEL
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help
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Selecting this option prints more information for Illegal Dependency
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Faults, that is, for Read-after-Write (RAW), Write-after-Write (WAW),
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or Write-after-Read (WAR) violations. This option is ignored if you
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are compiling for an Itanium A step processor
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(CONFIG_ITANIUM_ASTEP_SPECIFIC). If you're unsure, select Y.
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config DISABLE_VHPT
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bool "Disable VHPT"
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depends on DEBUG_KERNEL
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help
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The Virtual Hash Page Table (VHPT) enhances virtual address
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translation performance. Normally you want the VHPT active but you
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can select this option to disable the VHPT for debugging. If you're
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unsure, answer N.
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config IA64_DEBUG_CMPXCHG
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bool "Turn on compare-and-exchange bug checking (slow!)"
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depends on DEBUG_KERNEL
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help
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Selecting this option turns on bug checking for the IA-64
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compare-and-exchange instructions. This is slow! Itaniums
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from step B3 or later don't have this problem. If you're unsure,
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select N.
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config IA64_DEBUG_IRQ
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bool "Turn on irq debug checks (slow!)"
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depends on DEBUG_KERNEL
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help
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Selecting this option turns on bug checking for the IA-64 irq_save
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and restore instructions. It's useful for tracking down spinlock
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problems, but slow! If you're unsure, select N.
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