c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2024-12-26 03:09:34 +03:00
Code Issues Packages Projects Releases Wiki Activity

Suppress incorrect objtool warnings

Browse Source 
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
This commit is contained in:
Brian Behlendorf 2017-12-07 10:28:50 -08:00 committed by GitHub
parent 674b89342e
commit c28a67733c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 69 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
config/kernel-objtool.m4
View File

@ -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)
])

1
include/sys/Makefile.am
View File

@ -35,6 +35,7 @@ COMMON_H = \
$(top_srcdir)/include/sys/dsl_userhold.h \
$(top_srcdir)/include/sys/edonr.h \
$(top_srcdir)/include/sys/efi_partition.h \
$(top_srcdir)/include/sys/frame.h \
$(top_srcdir)/include/sys/hkdf.h \
$(top_srcdir)/include/sys/metaslab.h \
$(top_srcdir)/include/sys/metaslab_impl.h \

36
include/sys/frame.h Normal file
View File

@ -0,0 +1,36 @@
/*
* CDDL HEADER START
*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*
* CDDL HEADER END
*/
/*
* Copyright (C) 2017 by Lawrence Livermore National Security, LLC.
*/
#ifndef _SYS_FRAME_H
#define _SYS_FRAME_H
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__KERNEL__) && defined(HAVE_STACK_FRAME_NON_STANDARD)
#include <linux/frame.h>
#else
#define STACK_FRAME_NON_STANDARD(func)
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FRAME_H */

3
module/zcommon/zfs_fletcher_avx512.c
View File

@ -26,6 +26,7 @@
#include <linux/simd_x86.h>
#include <sys/byteorder.h>
#include <sys/frame.h>
#include <sys/spa_checksum.h>
#include <zfs_fletcher.h>
#include <strings.h>
@ -107,6 +108,7 @@ fletcher_4_avx512f_native(fletcher_4_ctx_t *ctx, const void *buf, uint64_t size)
kfpu_end();
}
STACK_FRAME_NON_STANDARD(fletcher_4_avx512f_native);
static void
fletcher_4_avx512f_byteswap(fletcher_4_ctx_t *ctx, const void *buf,
@ -150,6 +152,7 @@ fletcher_4_avx512f_byteswap(fletcher_4_ctx_t *ctx, const void *buf,
kfpu_end();
}
STACK_FRAME_NON_STANDARD(fletcher_4_avx512f_byteswap);
static boolean_t
fletcher_4_avx512f_valid(void)

5
module/zfs/Makefile.in
View File

@ -120,6 +120,11 @@ $(MODULE)-objs += dsl_destroy.o
$(MODULE)-objs += dsl_userhold.o
$(MODULE)-objs += qat_compress.o
# Suppress incorrect warnings from versions of objtool which are not
# aware of x86 EVEX prefix instructions used for AVX512.
OBJECT_FILES_NON_STANDARD_vdev_raidz_math_avx512bw.o := y
OBJECT_FILES_NON_STANDARD_vdev_raidz_math_avx512f.o := y
$(MODULE)-$(CONFIG_X86) += vdev_raidz_math_sse2.o
$(MODULE)-$(CONFIG_X86) += vdev_raidz_math_ssse3.o
$(MODULE)-$(CONFIG_X86) += vdev_raidz_math_avx2.o