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authorPaolo Bonzini <pbonzini@redhat.com>2020-05-20 03:40:09 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2020-05-20 03:40:09 -0400
commit9d5272f5e36155bcead69417fd12e98624e7faef (patch)
tree770af81c03932ad4e508a12cca6f83fbb3527689 /lib
parentfebd668d375caf13a7fcd93b3498366854de854a (diff)
parent3a7c8fafd1b42adea229fd204132f6a2fb3cd2d9 (diff)
Merge tag 'noinstr-x86-kvm-2020-05-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into HEAD
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.ubsan15
-rw-r--r--lib/debug_locks.c2
-rw-r--r--lib/kunit/test.c2
-rw-r--r--lib/mpi/longlong.h34
4 files changed, 25 insertions, 28 deletions
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index 48469c95d78e..929211039bac 100644
--- a/lib/Kconfig.ubsan
+++ b/lib/Kconfig.ubsan
@@ -60,18 +60,15 @@ config UBSAN_SANITIZE_ALL
Enabling this option will get kernel image size increased
significantly.
-config UBSAN_NO_ALIGNMENT
- bool "Disable checking of pointers alignment"
- default y if HAVE_EFFICIENT_UNALIGNED_ACCESS
+config UBSAN_ALIGNMENT
+ bool "Enable checks for pointers alignment"
+ default !HAVE_EFFICIENT_UNALIGNED_ACCESS
+ depends on !X86 || !COMPILE_TEST
help
- This option disables the check of unaligned memory accesses.
- This option should be used when building allmodconfig.
- Disabling this option on architectures that support unaligned
+ This option enables the check of unaligned memory accesses.
+ Enabling this option on architectures that support unaligned
accesses may produce a lot of false positives.
-config UBSAN_ALIGNMENT
- def_bool !UBSAN_NO_ALIGNMENT
-
config TEST_UBSAN
tristate "Module for testing for undefined behavior detection"
depends on m
diff --git a/lib/debug_locks.c b/lib/debug_locks.c
index a75ee30b77cb..06d3135bd184 100644
--- a/lib/debug_locks.c
+++ b/lib/debug_locks.c
@@ -36,7 +36,7 @@ EXPORT_SYMBOL_GPL(debug_locks_silent);
/*
* Generic 'turn off all lock debugging' function:
*/
-int debug_locks_off(void)
+noinstr int debug_locks_off(void)
{
if (debug_locks && __debug_locks_off()) {
if (!debug_locks_silent) {
diff --git a/lib/kunit/test.c b/lib/kunit/test.c
index 7a6430a7fca0..ccb2ffad8dcf 100644
--- a/lib/kunit/test.c
+++ b/lib/kunit/test.c
@@ -93,7 +93,7 @@ static void kunit_print_ok_not_ok(void *test_or_suite,
* representation.
*/
if (suite)
- pr_info("%s %zd - %s",
+ pr_info("%s %zd - %s\n",
kunit_status_to_string(is_ok),
test_number, description);
else
diff --git a/lib/mpi/longlong.h b/lib/mpi/longlong.h
index 2dceaca27489..891e1c3549c4 100644
--- a/lib/mpi/longlong.h
+++ b/lib/mpi/longlong.h
@@ -722,22 +722,22 @@ do { \
do { \
if (__builtin_constant_p(bh) && (bh) == 0) \
__asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{aze|addze} %0,%2" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "%r" ((USItype)(ah)), \
"%r" ((USItype)(al)), \
"rI" ((USItype)(bl))); \
else if (__builtin_constant_p(bh) && (bh) == ~(USItype) 0) \
__asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{ame|addme} %0,%2" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "%r" ((USItype)(ah)), \
"%r" ((USItype)(al)), \
"rI" ((USItype)(bl))); \
else \
__asm__ ("{a%I5|add%I5c} %1,%4,%5\n\t{ae|adde} %0,%2,%3" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "%r" ((USItype)(ah)), \
"r" ((USItype)(bh)), \
"%r" ((USItype)(al)), \
@@ -747,36 +747,36 @@ do { \
do { \
if (__builtin_constant_p(ah) && (ah) == 0) \
__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfze|subfze} %0,%2" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "r" ((USItype)(bh)), \
"rI" ((USItype)(al)), \
"r" ((USItype)(bl))); \
else if (__builtin_constant_p(ah) && (ah) == ~(USItype) 0) \
__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfme|subfme} %0,%2" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "r" ((USItype)(bh)), \
"rI" ((USItype)(al)), \
"r" ((USItype)(bl))); \
else if (__builtin_constant_p(bh) && (bh) == 0) \
__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{ame|addme} %0,%2" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "r" ((USItype)(ah)), \
"rI" ((USItype)(al)), \
"r" ((USItype)(bl))); \
else if (__builtin_constant_p(bh) && (bh) == ~(USItype) 0) \
__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{aze|addze} %0,%2" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "r" ((USItype)(ah)), \
"rI" ((USItype)(al)), \
"r" ((USItype)(bl))); \
else \
__asm__ ("{sf%I4|subf%I4c} %1,%5,%4\n\t{sfe|subfe} %0,%3,%2" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "r" ((USItype)(ah)), \
"r" ((USItype)(bh)), \
"rI" ((USItype)(al)), \
@@ -787,7 +787,7 @@ do { \
do { \
USItype __m0 = (m0), __m1 = (m1); \
__asm__ ("mulhwu %0,%1,%2" \
- : "=r" ((USItype) ph) \
+ : "=r" (ph) \
: "%r" (__m0), \
"r" (__m1)); \
(pl) = __m0 * __m1; \