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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-31 15:01:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-31 15:01:45 -0700 |
| commit | 1ce235faa8fefa4eb7199cad890944c1d2ba1b3e (patch) | |
| tree | 1ed51ca928c6760d524dc853cd879ab958e66bd9 /arch/arm64/kernel/process.c | |
| parent | e38be1b1066687204b05b6a46a2018806c7281de (diff) | |
| parent | 196adf2f3015eacac0567278ba538e3ffdd16d0e (diff) | |
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull ARM64 updates from Catalin Marinas:
- KGDB support for arm64
- PCI I/O space extended to 16M (in preparation of PCIe support
patches)
- Dropping ZONE_DMA32 in favour of ZONE_DMA (we only need one for the
time being), together with swiotlb late initialisation to correctly
setup the bounce buffer
- DMA API cache maintenance support (not all ARMv8 platforms have
hardware cache coherency)
- Crypto extensions advertising via ELF_HWCAP2 for compat user space
- Perf support for dwarf unwinding in compat mode
- asm/tlb.h converted to the generic mmu_gather code
- asm-generic rwsem implementation
- Code clean-up
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (42 commits)
arm64: Remove pgprot_dmacoherent()
arm64: Support DMA_ATTR_WRITE_COMBINE
arm64: Implement custom mmap functions for dma mapping
arm64: Fix __range_ok macro
arm64: Fix duplicated Kconfig entries
arm64: mm: Route pmd thp functions through pte equivalents
arm64: rwsem: use asm-generic rwsem implementation
asm-generic: rwsem: de-PPCify rwsem.h
arm64: enable generic CPU feature modalias matching for this architecture
arm64: smp: make local symbol static
arm64: debug: make local symbols static
ARM64: perf: support dwarf unwinding in compat mode
ARM64: perf: add support for frame pointer unwinding in compat mode
ARM64: perf: add support for perf registers API
arm64: Add boot time configuration of Intermediate Physical Address size
arm64: Do not synchronise I and D caches for special ptes
arm64: Make DMA coherent and strongly ordered mappings not executable
arm64: barriers: add dmb barrier
arm64: topology: Implement basic CPU topology support
arm64: advertise ARMv8 extensions to 32-bit compat ELF binaries
...
Diffstat (limited to 'arch/arm64/kernel/process.c')
| -rw-r--r-- | arch/arm64/kernel/process.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 9cce0098f4cd..6391485f342d 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -71,8 +71,17 @@ static void setup_restart(void) void soft_restart(unsigned long addr) { + typedef void (*phys_reset_t)(unsigned long); + phys_reset_t phys_reset; + setup_restart(); - cpu_reset(addr); + + /* Switch to the identity mapping */ + phys_reset = (phys_reset_t)virt_to_phys(cpu_reset); + phys_reset(addr); + + /* Should never get here */ + BUG(); } /* |