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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-09 09:05:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-09 09:05:05 +0200 |
| commit | 9424e8b1fedbaff34df187fdb87f9a9cba2d0ff2 (patch) | |
| tree | 7a595ccc67ae0cd9a414383ff2f6ede291c7dc18 /tools/objtool/Documentation | |
| parent | bccf1da3546cc7aeefadc63cd4356ab8dc04c1e3 (diff) | |
| parent | 8a5776a5f49812d29fe4b2d0a2d71675c3facf3f (diff) | |
Merge 4.14-rc4 into tty-next
We want the tty/serial fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/objtool/Documentation')
| -rw-r--r-- | tools/objtool/Documentation/stack-validation.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/objtool/Documentation/stack-validation.txt b/tools/objtool/Documentation/stack-validation.txt index 6a1af43862df..3995735a878f 100644 --- a/tools/objtool/Documentation/stack-validation.txt +++ b/tools/objtool/Documentation/stack-validation.txt @@ -194,10 +194,10 @@ they mean, and suggestions for how to fix them. If it's a GCC-compiled .c file, the error may be because the function uses an inline asm() statement which has a "call" instruction. An asm() statement with a call instruction must declare the use of the - stack pointer in its output operand. For example, on x86_64: + stack pointer in its output operand. On x86_64, this means adding + the ASM_CALL_CONSTRAINT as an output constraint: - register void *__sp asm("rsp"); - asm volatile("call func" : "+r" (__sp)); + asm volatile("call func" : ASM_CALL_CONSTRAINT); Otherwise the stack frame may not get created before the call. |