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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-01 22:07:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-01 22:07:51 -0700 |
| commit | 3fb9268e43e7ab62adb5c6ddec58d3cb4767bd9a (patch) | |
| tree | 026267c8bfa27b5cf73954c36148827a0ac49286 /arch/x86/um | |
| parent | 12ca7c8db30d36e0ba1d00d17fc8c85f9ebfdf47 (diff) | |
| parent | 262fa734a0023a43391f9bd4a4099487b8393f35 (diff) | |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"The main changes in this cycle were:
- unwinder fixes and enhancements
- improve ftrace interaction with the unwinder
- optimize the code footprint of WARN() and related debugging
constructs
- ... plus misc updates, cleanups and fixes"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
x86/unwind: Dump all stacks in unwind_dump()
x86/unwind: Silence more entry-code related warnings
x86/ftrace: Fix ebp in ftrace_regs_caller that screws up unwinder
x86/unwind: Remove unused 'sp' parameter in unwind_dump()
x86/unwind: Prepend hex mask value with '0x' in unwind_dump()
x86/unwind: Properly zero-pad 32-bit values in unwind_dump()
x86/unwind: Ensure stack pointer is aligned
debug: Avoid setting BUGFLAG_WARNING twice
x86/unwind: Silence entry-related warnings
x86/unwind: Read stack return address in update_stack_state()
x86/unwind: Move common code into update_stack_state()
debug: Fix __bug_table[] in arch linker scripts
debug: Add _ONCE() logic to report_bug()
x86/debug: Define BUG() again for !CONFIG_BUG
x86/debug: Implement __WARN() using UD0
x86/ftrace: Use Makefile logic instead of #ifdef for compiling ftrace_*.o
x86/ftrace: Add -mfentry support to x86_32 with DYNAMIC_FTRACE set
x86/ftrace: Clean up ftrace_regs_caller
x86/ftrace: Add stack frame pointer to ftrace_caller
x86/ftrace: Move the ftrace specific code out of entry_32.S
...
Diffstat (limited to 'arch/x86/um')
| -rw-r--r-- | arch/x86/um/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/um/bug.c | 21 |
2 files changed, 1 insertions, 22 deletions
diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile index 69f0827d5f53..46cbbfe03285 100644 --- a/arch/x86/um/Makefile +++ b/arch/x86/um/Makefile @@ -8,7 +8,7 @@ else BITS := 64 endif -obj-y = bug.o bugs_$(BITS).o delay.o fault.o ldt.o \ +obj-y = bugs_$(BITS).o delay.o fault.o ldt.o \ ptrace_$(BITS).o ptrace_user.o setjmp_$(BITS).o signal.o \ stub_$(BITS).o stub_segv.o \ sys_call_table_$(BITS).o sysrq_$(BITS).o tls_$(BITS).o \ diff --git a/arch/x86/um/bug.c b/arch/x86/um/bug.c deleted file mode 100644 index e8034e363d83..000000000000 --- a/arch/x86/um/bug.c +++ /dev/null @@ -1,21 +0,0 @@ -/* - * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com) - * Licensed under the GPL V2 - */ - -#include <linux/uaccess.h> - -/* - * Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because - * that's not relevant in skas mode. - */ - -int is_valid_bugaddr(unsigned long eip) -{ - unsigned short ud2; - - if (probe_kernel_address((unsigned short __user *)eip, ud2)) - return 0; - - return ud2 == 0x0b0f; -} |