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| author | Brian Behlendorf <[email protected]> | 2017-12-07 10:28:50 -0800 |
|---|---|---|
| committer | GitHub <[email protected]> | 2017-12-07 10:28:50 -0800 |
| commit | c28a67733c68b5540968136a7aca9633146afaf9 (patch) | |
| tree | 32b640937171299130ba4cef792a8acf400416ec /config/kernel-objtool.m4 | |
| parent | 674b89342e43bd83659285d730b5b6a98f8b4b48 (diff) | |
Suppress incorrect objtool warnings
Suppress incorrect warnings from versions of objtool which are not
aware of x86 EVEX prefix instructions used for AVX512.
module/zfs/vdev_raidz_math_avx512bw.o: warning:
objtool: <func+offset>: can't find jump dest instruction at .text
Reviewed-by: Don Brady <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #6928
Diffstat (limited to 'config/kernel-objtool.m4')
| -rw-r--r-- | config/kernel-objtool.m4 | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/config/kernel-objtool.m4 b/config/kernel-objtool.m4 index 94e7dda2d..467329b25 100644 --- a/config/kernel-objtool.m4 +++ b/config/kernel-objtool.m4 @@ -12,7 +12,30 @@ AC_DEFUN([ZFS_AC_KERNEL_OBJTOOL], [ #endif ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KERNEL_OBJTOOL, 1, [kernel does stack verification]) + AC_DEFINE(HAVE_KERNEL_OBJTOOL, 1, + [kernel does stack verification]) + + ZFS_AC_KERNEL_STACK_FRAME_NON_STANDARD + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +dnl # 4.6 API added STACK_FRAME_NON_STANDARD macro +dnl # +AC_DEFUN([ZFS_AC_KERNEL_STACK_FRAME_NON_STANDARD], [ + AC_MSG_CHECKING([whether STACK_FRAME_NON_STANDARD is defined]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/frame.h> + ],[ + #if !defined(STACK_FRAME_NON_STANDARD) + CTASSERT(1); + #endif + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_STACK_FRAME_NON_STANDARD, 1, + [STACK_FRAME_NON_STANDARD is defined]) ],[ AC_MSG_RESULT(no) ]) |