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652af89979
linux/arch/arm64/include/asm
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Mark Rutland 652af89979 arm64: factor out spin-table boot method 
The arm64 kernel has an internal holding pen, which is necessary for
some systems where we can't bring CPUs online individually and must hold
multiple CPUs in a safe area until the kernel is able to handle them.
The current SMP infrastructure for arm64 is closely coupled to this
holding pen, and alternative boot methods must launch CPUs into the pen,
where they sit before they are launched into the kernel proper.

With PSCI (and possibly other future boot methods), we can bring CPUs
online individually, and need not perform the secondary_holding_pen
dance. Instead, this patch factors the holding pen management code out
to the spin-table boot method code, as it is the only boot method
requiring the pen.

A new entry point for secondaries, secondary_entry is added for other
boot methods to use, which bypasses the holding pen and its associated
overhead when bringing CPUs online. The smp.pen.text section is also
removed, as the pen can live in head.text without problem.

The cpu_operations structure is extended with two new functions,
cpu_boot and cpu_postboot, for bringing a cpu into the kernel and
performing any post-boot cleanup required by a bootmethod (e.g.
resetting the secondary_holding_pen_release to INVALID_HWID).
Documentation is added for cpu_operations.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-10-25 11:33:20 +01:00
..
xen arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
arch_timer.h Merge branch 'timers/clockevents-next' of git://git.linaro.org/people/dlezcano/clockevents into timers/core 2013-08-21 14:59:23 +02:00
asm-offsets.h
assembler.h arm64: debug: fix mdscr.ss check when enabling debug exceptions 2013-05-17 18:24:19 +01:00
atomic.h arm64: atomics: fix grossly inconsistent asm constraints for exclusives 2013-02-11 18:16:41 +00:00
barrier.h arm64: Miscellaneous header files 2012-09-17 13:42:21 +01:00
bitops.h arm64: klib: Optimised atomic bitops 2013-03-21 17:39:31 +00:00
cache.h arm64: Cache maintenance routines 2012-09-17 13:42:00 +01:00
cacheflush.h arm64: Remove __flush_dcache_page() 2013-06-07 17:58:30 +01:00
cachetype.h arm64: Cache maintenance routines 2012-09-17 13:42:00 +01:00
cmpxchg.h arm64: cmpxchg: implement cmpxchg64_relaxed 2013-10-24 15:46:35 +01:00
compat.h arm64: Fix compat types affecting struct compat_stat 2013-04-25 17:45:50 +01:00
compiler.h arm64: Miscellaneous header files 2012-09-17 13:42:21 +01:00
cpu_ops.h arm64: factor out spin-table boot method 2013-10-25 11:33:20 +01:00
cputable.h arm64: CPU support 2012-09-17 13:41:59 +01:00
cputype.h arm64: Add defines for APM ARMv8 implementation 2013-06-20 17:03:59 +01:00
debug-monitors.h arm64: add '#ifdef CONFIG_COMPAT' for aarch32_break_handler() 2013-07-19 15:49:43 +01:00
device.h arm64: device: add iommu pointer to device archdata 2013-06-11 18:15:55 +01:00
dma-mapping.h arm64: Provide default implementation for dma_{alloc,free}_attrs 2013-06-07 17:57:23 +01:00
elf.h Move the EM_ARM and EM_AARCH64 definitions to uapi/linux/elf-em.h 2013-09-02 16:35:50 +01:00
esr.h arm64: add explicit symbols to ESR_EL1 decoding 2013-04-17 15:58:25 +01:00
exception.h arm64: Use irqchip_init() for interrupt controller initialisation 2013-03-26 16:02:23 +00:00
exec.h arm64: Miscellaneous header files 2012-09-17 13:42:21 +01:00
fb.h arm64: Device specific operations 2012-09-17 13:42:04 +01:00
fpsimd.h arm64: elf: fix core dumping definitions for GP and FP registers 2012-11-08 16:06:20 +00:00
fpsimdmacros.h arm64: move FP-SIMD save/restore code to a macro 2012-12-05 11:26:50 +00:00
futex.h arm64: atomics: fix grossly inconsistent asm constraints for exclusives 2013-02-11 18:16:41 +00:00
hardirq.h arm64: Use irqchip_init() for interrupt controller initialisation 2013-03-26 16:02:23 +00:00
hugetlb.h ARM64: mm: HugeTLB support. 2013-06-14 09:52:40 +01:00
hw_breakpoint.h arm64: Debugging support 2012-09-17 13:42:14 +01:00
hwcap.h arm64: Widen hwcap to be 64 bit 2013-09-20 09:56:07 +01:00
hypervisor.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
io.h arm64/xen: implement ioremap_cached on arm64 2013-06-07 10:39:50 +00:00
irq.h arm64: Use irqchip_init() for interrupt controller initialisation 2013-03-26 16:02:23 +00:00
irqflags.h arm64: IRQ handling 2012-09-17 13:42:02 +01:00
Kbuild arm64: compiling issue, need add include/asm/vga.h file 2013-04-25 17:45:47 +01:00
kvm_arm.h arm64: KVM: EL2 register definitions 2013-06-07 14:03:32 +01:00
kvm_asm.h arm64: KVM: perform save/restore of PAR_EL1 2013-08-09 13:19:28 +01:00
kvm_coproc.h arm64: KVM: 32bit handling of coprocessor traps 2013-06-12 16:42:16 +01:00
kvm_emulate.h arm64: KVM: 32bit conditional execution emulation 2013-06-12 16:42:15 +01:00
kvm_host.h arm64: KVM: use 'int' instead of 'u32' for variable 'target' in kvm_host.h. 2013-08-09 13:42:43 +01:00
kvm_mmio.h arm64: KVM: MMIO access backend 2013-06-07 14:03:38 +01:00
kvm_mmu.h arm64: KVM: architecture specific MMU backend 2013-06-07 14:03:35 +01:00
kvm_psci.h arm64: KVM: PSCI implementation 2013-06-12 16:40:32 +01:00
linkage.h arm64: fix alignment padding in assembly code 2012-10-20 11:12:01 +01:00
memblock.h arm64: MMU initialisation 2012-09-17 13:41:56 +01:00
memory.h arm64: KVM: define HYP and Stage-2 translation page flags 2013-06-07 14:03:31 +01:00
mmu_context.h arm64: mm: don't bother invalidating the icache in switch_mm 2013-06-07 18:00:11 +01:00
mmu.h arm64: Add simple earlyprintk support 2013-01-22 17:51:01 +00:00
module.h arm64: Loadable modules 2012-09-17 13:42:19 +01:00
neon.h arm64: add support for kernel mode NEON 2013-08-20 12:12:26 +01:00
page.h arm64: MMU fault handling and page table management 2012-09-17 13:41:57 +01:00
perf_event.h arm64: perf: add guest vs host discrimination 2013-01-29 16:56:17 +00:00
pgalloc.h arm64: MMU fault handling and page table management 2012-09-17 13:41:57 +01:00
pgtable-2level-hwdef.h arm64: MMU definitions 2012-09-17 13:41:56 +01:00
pgtable-2level-types.h ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" 2013-08-22 11:44:41 +01:00
pgtable-3level-hwdef.h arm64: MMU definitions 2012-09-17 13:41:56 +01:00
pgtable-3level-types.h ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" 2013-08-22 11:44:41 +01:00
pgtable-hwdef.h arm64: mm: permit use of tagged pointers at EL0 2013-09-03 10:18:02 +01:00
pgtable.h Main features: 2013-07-03 10:31:38 -07:00
pmu.h arm64: Performance counters support 2012-09-17 13:42:17 +01:00
proc-fns.h arm64: CPU support 2012-09-17 13:41:59 +01:00
processor.h Merge branch 'arch-microblaze' into no-rebases 2012-11-16 22:28:43 -05:00
prom.h arm64: Build infrastructure 2012-09-17 13:42:21 +01:00
psci.h arm64: unify smp_psci.c and psci.c 2013-10-25 11:33:19 +01:00
ptrace.h arm64: debug: consolidate software breakpoint handlers 2013-06-12 11:23:02 +01:00
shmparam.h arm64: ELF definitions 2012-09-17 13:42:07 +01:00
sigcontext.h UAPI: (Scripted) Disintegrate arch/arm64/include/asm 2012-10-11 11:05:13 +01:00
signal32.h arm64: 32-bit (compat) applications support 2012-09-17 13:42:12 +01:00
smp_plat.h arm64: kernel: initialise cpu_logical_map from the DT 2013-03-20 17:26:24 +00:00
smp.h arm64: factor out spin-table boot method 2013-10-25 11:33:20 +01:00
sparsemem.h arm64: MMU definitions 2012-09-17 13:41:56 +01:00
spinlock_types.h arm64: locks: introduce ticket-based spinlock implementation 2013-10-24 15:46:33 +01:00
spinlock.h arm64: lockref: add support for lockless lockrefs using cmpxchg 2013-10-24 15:46:34 +01:00
stacktrace.h arm64: Exception handling 2012-09-17 10:24:46 +01:00
stat.h UAPI: (Scripted) Disintegrate arch/arm64/include/asm 2012-10-11 11:05:13 +01:00
string.h arm64: klib: Optimised string functions 2013-03-21 17:39:30 +00:00
sync_bitops.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
syscall.h arm64: check for number of arguments in syscall_get/set_arguments() 2013-10-23 15:45:35 +01:00
syscalls.h arm64: switch to generic sigaltstack 2013-02-14 09:17:29 -05:00
system_misc.h arm64: use common reboot infrastructure 2013-07-19 15:57:08 +01:00
thread_info.h arm64: Change kernel stack size to 16K 2013-07-26 13:37:29 +01:00
timex.h arm64: kernel: compiling issue, need delete read_current_timer() 2013-06-10 17:58:20 +01:00
tlb.h Fix TLB gather virtual address range invalidation corner cases 2013-08-16 08:52:46 -07:00
tlbflush.h ARM64: mm: THP support. 2013-06-14 09:52:41 +01:00
traps.h arm64: Exception handling 2012-09-17 10:24:46 +01:00
uaccess.h arm64: avoid multiple evaluation of ptr in get_user/put_user() 2013-09-25 16:42:21 +01:00
ucontext.h arm64: fix padding computation in struct ucontext 2013-03-18 10:42:16 +00:00
unistd32.h unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
unistd.h burying unused conditionals 2013-02-14 09:21:15 -05:00
vdso_datapage.h arm64: VDSO support 2012-09-17 13:42:09 +01:00
vdso.h arm64: VDSO support 2012-09-17 13:42:09 +01:00
virt.h arm64: virt: ensure visibility of __boot_cpu_mode 2013-07-23 11:00:24 +01:00