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c28a67733c
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 <don.brady@delphix.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #6928
43 lines
916 B
Plaintext
43 lines
916 B
Plaintext
dnl #
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dnl # 4.6 API for compile-time stack validation
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_OBJTOOL], [
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AC_MSG_CHECKING([for compile-time stack validation (objtool)])
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ZFS_LINUX_TRY_COMPILE([
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#undef __ASSEMBLY__
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#include <asm/frame.h>
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],[
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#if !defined(FRAME_BEGIN)
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CTASSERT(1);
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#endif
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_KERNEL_OBJTOOL, 1,
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[kernel does stack verification])
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ZFS_AC_KERNEL_STACK_FRAME_NON_STANDARD
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 4.6 API added STACK_FRAME_NON_STANDARD macro
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_STACK_FRAME_NON_STANDARD], [
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AC_MSG_CHECKING([whether STACK_FRAME_NON_STANDARD is defined])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/frame.h>
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],[
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#if !defined(STACK_FRAME_NON_STANDARD)
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CTASSERT(1);
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#endif
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_STACK_FRAME_NON_STANDARD, 1,
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[STACK_FRAME_NON_STANDARD is defined])
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],[
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AC_MSG_RESULT(no)
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])
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])
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