mirror of
https://github.com/torvalds/linux.git
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81ae31d782
- Add pvscsi frontend and backend drivers.
- Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses.
- Try and keep memory contiguous during PV memory setup (reduces
SWIOTLB usage).
- Allow front/back drivers to use threaded irqs.
- Support large initrds in PV guests.
- Fix PVH guests in preparation for Xen 4.5
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Merge tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen updates from David Vrabel:
"Features and fixes:
- Add pvscsi frontend and backend drivers.
- Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses.
- Try and keep memory contiguous during PV memory setup (reduces
SWIOTLB usage).
- Allow front/back drivers to use threaded irqs.
- Support large initrds in PV guests.
- Fix PVH guests in preparation for Xen 4.5"
* tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits)
xen: remove DEFINE_XENBUS_DRIVER() macro
xen/xenbus: Remove BUG_ON() when error string trucated
xen/xenbus: Correct the comments for xenbus_grant_ring()
x86/xen: Set EFER.NX and EFER.SCE in PVH guests
xen: eliminate scalability issues from initrd handling
xen: sync some headers with xen tree
xen: make pvscsi frontend dependant on xenbus frontend
arm{,64}/xen: Remove "EXPERIMENTAL" in the description of the Xen options
xen-scsifront: don't deadlock if the ring becomes full
x86: remove the Xen-specific _PAGE_IOMAP PTE flag
x86/xen: do not use _PAGE_IOMAP PTE flag for I/O mappings
x86: skip check for spurious faults for non-present faults
xen/efi: Directly include needed headers
xen-scsiback: clean up a type issue in scsiback_make_tpg()
xen-scsifront: use GFP_ATOMIC under spin_lock
MAINTAINERS: Add xen pvscsi maintainer
xen-scsiback: Add Xen PV SCSI backend driver
xen-scsifront: Add Xen PV SCSI frontend driver
xen: Add Xen pvSCSI protocol description
xen/events: support threaded irqs for interdomain event channels
...
470 lines
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470 lines
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config ARM64
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def_bool y
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select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
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select ARCH_HAS_SG_CHAIN
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select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
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select ARCH_USE_CMPXCHG_LOCKREF
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select ARCH_SUPPORTS_ATOMIC_RMW
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select ARCH_WANT_OPTIONAL_GPIOLIB
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select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
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select ARCH_WANT_FRAME_POINTERS
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select ARM_AMBA
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select ARM_ARCH_TIMER
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select ARM_GIC
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select AUDIT_ARCH_COMPAT_GENERIC
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select ARM_GIC_V3
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select BUILDTIME_EXTABLE_SORT
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select CLONE_BACKWARDS
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select COMMON_CLK
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select CPU_PM if (SUSPEND || CPU_IDLE)
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select DCACHE_WORD_ACCESS
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select GENERIC_ALLOCATOR
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select GENERIC_CLOCKEVENTS
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select GENERIC_CLOCKEVENTS_BROADCAST if SMP
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select GENERIC_CPU_AUTOPROBE
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select GENERIC_EARLY_IOREMAP
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select GENERIC_IOMAP
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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select GENERIC_SCHED_CLOCK
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_STRNCPY_FROM_USER
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select GENERIC_STRNLEN_USER
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select GENERIC_TIME_VSYSCALL
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select HANDLE_DOMAIN_IRQ
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select HARDIRQS_SW_RESEND
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_ARCH_JUMP_LABEL
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select HAVE_ARCH_KGDB
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select HAVE_ARCH_TRACEHOOK
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select HAVE_BPF_JIT
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select HAVE_C_RECORDMCOUNT
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select HAVE_CC_STACKPROTECTOR
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select HAVE_DEBUG_BUGVERBOSE
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_DMA_API_DEBUG
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select HAVE_DMA_ATTRS
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select HAVE_DMA_CONTIGUOUS
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select HAVE_DYNAMIC_FTRACE
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select HAVE_EFFICIENT_UNALIGNED_ACCESS
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_GENERIC_DMA_COHERENT
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select HAVE_HW_BREAKPOINT if PERF_EVENTS
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select HAVE_MEMBLOCK
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select HAVE_PATA_PLATFORM
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select HAVE_PERF_EVENTS
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select HAVE_PERF_REGS
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select HAVE_PERF_USER_STACK_DUMP
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select HAVE_RCU_TABLE_FREE
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select HAVE_SYSCALL_TRACEPOINTS
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select IRQ_DOMAIN
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select MODULES_USE_ELF_RELA
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select NO_BOOTMEM
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select OF
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select OF_EARLY_FLATTREE
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select OF_RESERVED_MEM
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select PERF_USE_VMALLOC
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select POWER_RESET
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select POWER_SUPPLY
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select RTC_LIB
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select SPARSE_IRQ
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select SYSCTL_EXCEPTION_TRACE
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select HAVE_CONTEXT_TRACKING
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help
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ARM 64-bit (AArch64) Linux support.
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config 64BIT
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def_bool y
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config ARCH_PHYS_ADDR_T_64BIT
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def_bool y
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config MMU
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def_bool y
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config NO_IOPORT_MAP
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def_bool y if !PCI
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config STACKTRACE_SUPPORT
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def_bool y
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config LOCKDEP_SUPPORT
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def_bool y
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config TRACE_IRQFLAGS_SUPPORT
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def_bool y
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config RWSEM_XCHGADD_ALGORITHM
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def_bool y
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config GENERIC_HWEIGHT
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def_bool y
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config GENERIC_CSUM
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def_bool y
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config GENERIC_CALIBRATE_DELAY
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def_bool y
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config ZONE_DMA
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def_bool y
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config HAVE_GENERIC_RCU_GUP
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def_bool y
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config ARCH_DMA_ADDR_T_64BIT
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def_bool y
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config NEED_DMA_MAP_STATE
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def_bool y
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config NEED_SG_DMA_LENGTH
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def_bool y
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config SWIOTLB
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def_bool y
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config IOMMU_HELPER
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def_bool SWIOTLB
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config KERNEL_MODE_NEON
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def_bool y
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config FIX_EARLYCON_MEM
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def_bool y
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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menu "Platform selection"
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config ARCH_THUNDER
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bool "Cavium Inc. Thunder SoC Family"
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help
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This enables support for Cavium's Thunder Family of SoCs.
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config ARCH_VEXPRESS
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bool "ARMv8 software model (Versatile Express)"
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select ARCH_REQUIRE_GPIOLIB
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select COMMON_CLK_VERSATILE
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select POWER_RESET_VEXPRESS
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select VEXPRESS_CONFIG
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help
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This enables support for the ARMv8 software model (Versatile
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Express).
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config ARCH_XGENE
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bool "AppliedMicro X-Gene SOC Family"
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help
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This enables support for AppliedMicro X-Gene SOC Family
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endmenu
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menu "Bus support"
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config ARM_AMBA
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bool
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config PCI
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bool "PCI support"
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help
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This feature enables support for PCI bus system. If you say Y
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here, the kernel will include drivers and infrastructure code
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to support PCI bus devices.
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config PCI_DOMAINS
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def_bool PCI
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config PCI_DOMAINS_GENERIC
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def_bool PCI
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config PCI_SYSCALL
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def_bool PCI
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source "drivers/pci/Kconfig"
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source "drivers/pci/pcie/Kconfig"
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source "drivers/pci/hotplug/Kconfig"
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endmenu
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menu "Kernel Features"
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choice
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prompt "Page size"
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default ARM64_4K_PAGES
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help
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Page size (translation granule) configuration.
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config ARM64_4K_PAGES
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bool "4KB"
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help
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This feature enables 4KB pages support.
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config ARM64_64K_PAGES
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bool "64KB"
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help
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This feature enables 64KB pages support (4KB by default)
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allowing only two levels of page tables and faster TLB
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look-up. AArch32 emulation is not available when this feature
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is enabled.
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endchoice
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choice
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prompt "Virtual address space size"
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default ARM64_VA_BITS_39 if ARM64_4K_PAGES
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default ARM64_VA_BITS_42 if ARM64_64K_PAGES
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help
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Allows choosing one of multiple possible virtual address
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space sizes. The level of translation table is determined by
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a combination of page size and virtual address space size.
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config ARM64_VA_BITS_39
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bool "39-bit"
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depends on ARM64_4K_PAGES
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config ARM64_VA_BITS_42
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bool "42-bit"
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depends on ARM64_64K_PAGES
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config ARM64_VA_BITS_48
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bool "48-bit"
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depends on BROKEN
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endchoice
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config ARM64_VA_BITS
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int
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default 39 if ARM64_VA_BITS_39
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default 42 if ARM64_VA_BITS_42
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default 48 if ARM64_VA_BITS_48
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config ARM64_PGTABLE_LEVELS
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int
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default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
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default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
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default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
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default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
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config CPU_BIG_ENDIAN
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bool "Build big-endian kernel"
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help
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Say Y if you plan on running a kernel in big-endian mode.
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config SMP
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bool "Symmetric Multi-Processing"
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help
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This enables support for systems with more than one CPU. If
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you say N here, the kernel will run on single and
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multiprocessor machines, but will use only one CPU of a
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multiprocessor machine. If you say Y here, the kernel will run
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on many, but not all, single processor machines. On a single
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processor machine, the kernel will run faster if you say N
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here.
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If you don't know what to do here, say N.
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config SCHED_MC
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bool "Multi-core scheduler support"
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depends on SMP
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help
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Multi-core scheduler support improves the CPU scheduler's decision
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making when dealing with multi-core CPU chips at a cost of slightly
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increased overhead in some places. If unsure say N here.
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config SCHED_SMT
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bool "SMT scheduler support"
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depends on SMP
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help
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Improves the CPU scheduler's decision making when dealing with
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MultiThreading at a cost of slightly increased overhead in some
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places. If unsure say N here.
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config NR_CPUS
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int "Maximum number of CPUs (2-64)"
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range 2 64
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depends on SMP
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# These have to remain sorted largest to smallest
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default "64"
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SMP
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help
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Say Y here to experiment with turning CPUs off and on. CPUs
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can be controlled through /sys/devices/system/cpu.
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source kernel/Kconfig.preempt
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config HZ
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int
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default 100
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config ARCH_HAS_HOLES_MEMORYMODEL
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def_bool y if SPARSEMEM
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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select SPARSEMEM_VMEMMAP_ENABLE
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config ARCH_SPARSEMEM_DEFAULT
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def_bool ARCH_SPARSEMEM_ENABLE
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config ARCH_SELECT_MEMORY_MODEL
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def_bool ARCH_SPARSEMEM_ENABLE
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config HAVE_ARCH_PFN_VALID
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def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
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config HW_PERF_EVENTS
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bool "Enable hardware performance counter support for perf events"
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depends on PERF_EVENTS
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default y
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help
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Enable hardware performance counter support for perf events. If
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disabled, perf events will use software events only.
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config SYS_SUPPORTS_HUGETLBFS
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def_bool y
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config ARCH_WANT_GENERAL_HUGETLB
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def_bool y
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config ARCH_WANT_HUGE_PMD_SHARE
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def_bool y if !ARM64_64K_PAGES
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config HAVE_ARCH_TRANSPARENT_HUGEPAGE
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def_bool y
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config ARCH_HAS_CACHE_LINE_SIZE
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def_bool y
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source "mm/Kconfig"
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config XEN_DOM0
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def_bool y
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depends on XEN
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config XEN
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bool "Xen guest support on ARM64"
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depends on ARM64 && OF
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select SWIOTLB_XEN
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help
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Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
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config FORCE_MAX_ZONEORDER
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int
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default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
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default "11"
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endmenu
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menu "Boot options"
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config CMDLINE
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string "Default kernel command string"
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default ""
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help
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Provide a set of default command-line options at build time by
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entering them here. As a minimum, you should specify the the
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root device (e.g. root=/dev/nfs).
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config CMDLINE_FORCE
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bool "Always use the default kernel command string"
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help
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Always use the default kernel command string, even if the boot
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loader passes other arguments to the kernel.
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This is useful if you cannot or don't want to change the
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command-line options your boot loader passes to the kernel.
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config EFI_STUB
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bool
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config EFI
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bool "UEFI runtime support"
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depends on OF && !CPU_BIG_ENDIAN
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select LIBFDT
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select UCS2_STRING
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select EFI_PARAMS_FROM_FDT
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select EFI_RUNTIME_WRAPPERS
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select EFI_STUB
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select EFI_ARMSTUB
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default y
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help
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This option provides support for runtime services provided
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by UEFI firmware (such as non-volatile variables, realtime
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clock, and platform reset). A UEFI stub is also provided to
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allow the kernel to be booted as an EFI application. This
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is only useful on systems that have UEFI firmware.
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endmenu
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menu "Userspace binary formats"
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source "fs/Kconfig.binfmt"
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config COMPAT
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bool "Kernel support for 32-bit EL0"
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depends on !ARM64_64K_PAGES
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select COMPAT_BINFMT_ELF
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select HAVE_UID16
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select OLD_SIGSUSPEND3
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select COMPAT_OLD_SIGACTION
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help
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This option enables support for a 32-bit EL0 running under a 64-bit
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kernel at EL1. AArch32-specific components such as system calls,
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the user helper functions, VFP support and the ptrace interface are
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handled appropriately by the kernel.
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If you want to execute 32-bit userspace applications, say Y.
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config SYSVIPC_COMPAT
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def_bool y
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depends on COMPAT && SYSVIPC
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endmenu
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menu "Power management options"
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source "kernel/power/Kconfig"
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config ARCH_SUSPEND_POSSIBLE
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def_bool y
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config ARM64_CPU_SUSPEND
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def_bool PM_SLEEP
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endmenu
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menu "CPU Power Management"
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source "drivers/cpuidle/Kconfig"
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source "drivers/cpufreq/Kconfig"
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endmenu
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source "net/Kconfig"
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source "drivers/Kconfig"
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source "drivers/firmware/Kconfig"
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source "fs/Kconfig"
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source "arch/arm64/kvm/Kconfig"
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source "arch/arm64/Kconfig.debug"
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source "security/Kconfig"
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source "crypto/Kconfig"
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if CRYPTO
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source "arch/arm64/crypto/Kconfig"
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endif
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source "lib/Kconfig"
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