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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-16 17:17:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-16 17:17:24 -0700 |
| commit | be092017b6ffbd013f481f915632db6aa9fc3ca3 (patch) | |
| tree | 56f37b2b232ef41c0202c4f57d8e83e93d9168f4 /arch/arm64/kernel/sys.c | |
| parent | fb6363e9f4eeb37323feb8253b93854195942b8b (diff) | |
| parent | e6d9a52543338603e25e71e0e4942f05dae0dd8a (diff) | |
| download | op-kernel-dev-be092017b6ffbd013f481f915632db6aa9fc3ca3.zip op-kernel-dev-be092017b6ffbd013f481f915632db6aa9fc3ca3.tar.gz | |
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
- virt_to_page/page_address optimisations
- support for NUMA systems described using device-tree
- support for hibernate/suspend-to-disk
- proper support for maxcpus= command line parameter
- detection and graceful handling of AArch64-only CPUs
- miscellaneous cleanups and non-critical fixes
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (92 commits)
arm64: do not enforce strict 16 byte alignment to stack pointer
arm64: kernel: Fix incorrect brk randomization
arm64: cpuinfo: Missing NULL terminator in compat_hwcap_str
arm64: secondary_start_kernel: Remove unnecessary barrier
arm64: Ensure pmd_present() returns false after pmd_mknotpresent()
arm64: Replace hard-coded values in the pmd/pud_bad() macros
arm64: Implement pmdp_set_access_flags() for hardware AF/DBM
arm64: Fix typo in the pmdp_huge_get_and_clear() definition
arm64: mm: remove unnecessary EXPORT_SYMBOL_GPL
arm64: always use STRICT_MM_TYPECHECKS
arm64: kvm: Fix kvm teardown for systems using the extended idmap
arm64: kaslr: increase randomization granularity
arm64: kconfig: drop CONFIG_RTC_LIB dependency
arm64: make ARCH_SUPPORTS_DEBUG_PAGEALLOC depend on !HIBERNATION
arm64: hibernate: Refuse to hibernate if the boot cpu is offline
arm64: kernel: Add support for hibernate/suspend-to-disk
PM / Hibernate: Call flush_icache_range() on pages restored in-place
arm64: Add new asm macro copy_page
arm64: Promote KERNEL_START/KERNEL_END definitions to a header file
arm64: kernel: Include _AC definition in page.h
...
Diffstat (limited to 'arch/arm64/kernel/sys.c')
| -rw-r--r-- | arch/arm64/kernel/sys.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c index 75151aa..26fe8ea 100644 --- a/arch/arm64/kernel/sys.c +++ b/arch/arm64/kernel/sys.c @@ -25,6 +25,7 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/syscalls.h> +#include <asm/cpufeature.h> asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, @@ -36,11 +37,20 @@ asmlinkage long sys_mmap(unsigned long addr, unsigned long len, return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); } +SYSCALL_DEFINE1(arm64_personality, unsigned int, personality) +{ + if (personality(personality) == PER_LINUX32 && + !system_supports_32bit_el0()) + return -EINVAL; + return sys_personality(personality); +} + /* * Wrappers to pass the pt_regs argument. */ asmlinkage long sys_rt_sigreturn_wrapper(void); #define sys_rt_sigreturn sys_rt_sigreturn_wrapper +#define sys_personality sys_arm64_personality #undef __SYSCALL #define __SYSCALL(nr, sym) [nr] = sym, |
