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Commit df41017e authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Tony Luck
Browse files

ia64: remove support for machvecs 



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: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-27-hch@lst.de


Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent a8384e6c

arch/ia64/Kconfig

+21 −51
Original line number Diff line number Diff line
@@ -11,11 +11,13 @@ config IA64 
	select ARCH_MIGHT_HAVE_PC_PARPORT

	select ARCH_MIGHT_HAVE_PC_SERIO

	select ACPI

	select ACPI_NUMA if NUMA

	select ARCH_SUPPORTS_ACPI

	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI

	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI

	select FORCE_PCI

	select PCI_DOMAINS if PCI

	select PCI_MSI

	select PCI_SYSCALL if PCI

	select HAVE_UNSTABLE_SCHED_CLOCK

	select HAVE_EXIT_THREAD
@@ -30,8 +32,8 @@ config IA64 
	select HAVE_ARCH_TRACEHOOK

	select HAVE_MEMBLOCK_NODE_MAP

	select HAVE_VIRT_CPU_ACCOUNTING

	select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB

	select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB

	select ARCH_HAS_DMA_COHERENT_TO_PFN

	select ARCH_HAS_SYNC_DMA_FOR_CPU

	select VIRT_TO_BUS

	select GENERIC_IRQ_PROBE

	select GENERIC_PENDING_IRQ if SMP
@@ -45,6 +47,7 @@ config IA64 
	select ARCH_THREAD_STACK_ALLOCATOR

	select ARCH_CLOCKSOURCE_DATA

	select GENERIC_TIME_VSYSCALL

	select SWIOTLB

	select SYSCTL_ARCH_UNALIGN_NO_WARN

	select HAVE_MOD_ARCH_SPECIFIC

	select MODULES_USE_ELF_RELA
@@ -52,6 +55,7 @@ config IA64 
	select HAVE_ARCH_AUDITSYSCALL

	select NEED_DMA_MAP_STATE

	select NEED_SG_DMA_LENGTH

	select NUMA if !FLATMEM

	default y

	help

	  The Itanium Processor Family is Intel's 64-bit successor to
@@ -119,53 +123,6 @@ config AUDIT_ARCH 
	bool

	default y



choice

	prompt "System type"

	default IA64_GENERIC



config IA64_GENERIC

	bool "generic"

	select NUMA

	select ACPI_NUMA

	select SWIOTLB

	select PCI_MSI

	help

	  This selects the system type of your hardware.  A "generic" kernel

	  will run on any supported IA-64 system.  However, if you configure

	  a kernel for your specific system, it will be faster and smaller.



	  generic		For any supported IA-64 system

	  DIG-compliant		For DIG ("Developer's Interface Guide") compliant systems

	  DIG+Intel+IOMMU	For DIG systems with Intel IOMMU

	  HP-zx1/sx1000		For HP systems

	  SGI-UV		For SGI UV systems



	  If you don't know what to do, choose "generic".



config IA64_DIG

	bool "DIG-compliant"

	select SWIOTLB



config IA64_HP_ZX1

	bool "HP-zx1/sx1000"

	help

	  Build a kernel that runs on HP zx1 and sx1000 systems.  This adds

	  support for the HP I/O MMU.



config IA64_SGI_UV

	bool "SGI-UV"

	select NUMA

	select ACPI_NUMA

	select SWIOTLB

	help

	  Selecting this option will optimize the kernel for use on UV based

	  systems, but the resulting kernel binary will not run on other

	  types of ia64 systems.  If you have an SGI UV system, it's safe

	  to select this option.  If in doubt, select ia64 generic support

	  instead.



endchoice



choice

	prompt "Processor type"

	default ITANIUM
@@ -230,6 +187,20 @@ config IA64_L1_CACHE_SHIFT 
	default "7" if MCKINLEY

	default "6" if ITANIUM



config IA64_SGI_UV

	bool "SGI-UV support"

	help

	  Selecting this option will add specific support for running on SGI

	  UV based systems.  If you have an SGI UV system or are building a

	  distro kernel, select this option.



config IA64_HP_SBA_IOMMU

	bool "HP SBA IOMMU support"

	default y

	help

	  Say Y here to add support for the SBA IOMMU found on HP zx1 and

	  sx1000 systems.  If you're unsure, answer Y.



config IA64_CYCLONE

	bool "Cyclone (EXA) Time Source support"

	help
@@ -334,13 +305,12 @@ config ARCH_SPARSEMEM_ENABLE 
	select SPARSEMEM_VMEMMAP_ENABLE



config ARCH_DISCONTIGMEM_DEFAULT

	def_bool y if (IA64_GENERIC || IA64_HP_ZX1)

	def_bool y

	depends on ARCH_DISCONTIGMEM_ENABLE



config NUMA

	bool "NUMA support"

	depends on !FLATMEM

	select ACPI_NUMA if ACPI

	help

	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory

	  Access).  This option is for configuring high-end multiprocessor

arch/ia64/Kconfig.debug

+1 −1
Original line number Diff line number Diff line
@@ -14,7 +14,7 @@ config IA64_GRANULE_16MB 


config IA64_GRANULE_64MB

	bool "64MB"

	depends on !(IA64_GENERIC || IA64_HP_ZX1)

	depends on BROKEN



endchoice

arch/ia64/Makefile

+1 −6
Original line number Diff line number Diff line
@@ -50,14 +50,9 @@ head-y := arch/ia64/kernel/head.o 


libs-y				+= arch/ia64/lib/

core-y				+= arch/ia64/kernel/ arch/ia64/mm/

core-$(CONFIG_IA64_DIG) 	+= arch/ia64/dig/

core-$(CONFIG_IA64_GENERIC) 	+= arch/ia64/dig/

core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/

core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/



drivers-y			+= arch/ia64/pci/

drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/

drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/

drivers-y			+= arch/ia64/pci/ arch/ia64/hp/common/

drivers-$(CONFIG_OPROFILE)	+= arch/ia64/oprofile/



PHONY += compressed check

arch/ia64/configs/bigsur_defconfig

+0 −1
Original line number Diff line number Diff line
@@ -7,7 +7,6 @@ CONFIG_MODULES=y 
CONFIG_MODULE_UNLOAD=y

CONFIG_PARTITION_ADVANCED=y

CONFIG_SGI_PARTITION=y

CONFIG_IA64_DIG=y

CONFIG_SMP=y

CONFIG_NR_CPUS=2

CONFIG_PREEMPT=y

arch/ia64/configs/tiger_defconfig

+0 −1
Original line number Diff line number Diff line
@@ -12,7 +12,6 @@ CONFIG_MODULE_SRCVERSION_ALL=y 
# CONFIG_BLK_DEV_BSG is not set

CONFIG_PARTITION_ADVANCED=y

CONFIG_SGI_PARTITION=y

CONFIG_IA64_DIG=y

CONFIG_MCKINLEY=y

CONFIG_IA64_PAGE_SIZE_64KB=y

CONFIG_IA64_CYCLONE=y