Borislav Petkov c597f98755 x86/hweight: Get rid of the special calling convention ... commit f5967101e9de12addcda4510dfbac66d7c5779c3 upstream. People complained about ARCH_HWEIGHT_CFLAGS and how it throws a wrench into kcov, lto, etc, experimentations. Add asm versions for __sw_hweight{32,64}() and do explicit saving and restoring of clobbered registers. This gets rid of the special calling convention. We get to call those functions on !X86_FEATURE_POPCNT CPUs. We still need to hardcode POPCNT and register operands as some old gas versions which we support, do not know about POPCNT. Btw, remove redundant REX prefix from 32-bit POPCNT because alternatives can do padding now. Suggested-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1464605787-20603-1-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-04-24 09:32:04 +02:00
..
842	crypto: 842 - Add CRC and validation support	2015-10-14 22:23:17 +08:00
fonts
lz4	lib: lz4: fixed zram with lz4 on big endian machines	2016-05-04 14:48:41 -07:00
lzo
mpi	lib/mpi: Fix umul_ppmm() for MIPS64r6	2018-03-03 10:19:42 +01:00
raid6
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c	ASN.1: check for error from ASN1_OP_END__ACT actions	2017-12-16 10:33:48 +01:00
assoc_array.c	assoc_array: Fix a buggy node-splitting case	2017-11-02 09:40:49 +01:00
atomic64_test.c
atomic64.c
audit.c
bcd.c
bch.c
bitmap.c
bitrev.c
bsearch.c
btree.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
bug.c
build_OID_registry
bust_spinlocks.c
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline.c	lib/cmdline.c: fix get_options() overflow while parsing ranges	2017-06-29 12:48:51 +02:00
compat_audit.c
cordic.c
cpu_rmap.c
cpu-notifier-error-inject.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_info.c
debug_locks.c
debugobjects.c
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c	devres: fix a for loop bounds check	2015-10-05 04:49:54 +01:00
digsig.c	lib/digsig: fix dereference of NULL user_key_payload	2017-10-27 10:23:17 +02:00
div64.c	remove abs64()	2015-11-09 15:11:24 -08:00
dma-debug.c	dma-debug: avoid spinlock recursion when disabling dma-debug	2016-06-07 18:14:37 -07:00
dump_stack.c	dump_stack: avoid potential deadlocks	2016-02-25 12:01:23 -08:00
dynamic_debug.c	dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0	2017-12-16 10:33:54 +01:00
dynamic_queue_limits.c
earlycpio.c
extable.c
fault-inject.c	fault-inject: fix inverted interval/probability values in printk	2015-10-23 17:55:10 +09:00
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_bit.c
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c	lib/genalloc.c: make the avail variable an atomic_long_t	2017-12-16 10:33:54 +01:00
glob.c
halfmd4.c	lib/halfmd4.c: use rol32 inline function in the ROUND macro	2015-11-06 17:50:42 -08:00
hexdump.c	lib/hexdump.c: truncate output in case of overflow	2015-11-06 17:50:42 -08:00
hweight.c	x86/hweight: Get rid of the special calling convention	2018-04-24 09:32:04 +02:00
idr.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
inflate.c
int_sqrt.c
interval_tree_test.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-common.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc	2015-11-05 16:34:48 -08:00
iommu-helper.c
ioremap.c	mm/vmalloc: add interfaces to free unmapped page table	2018-03-28 18:40:14 +02:00
iov_iter.c	fix iov_iter_fault_in_readable()	2016-09-24 10:07:43 +02:00
irq_regs.c
is_single_threaded.c	lib/is_single_threaded.c: change current_is_single_threaded() to use for_each_thread()	2015-11-06 17:50:42 -08:00
jedec_ddr_data.c
kasprintf.c	lib/kasprintf.c: introduce kvasprintf_const	2015-11-06 17:50:42 -08:00
Kconfig	lib: sw842: select crc32	2016-03-03 15:07:24 -08:00
Kconfig.debug	kasan: rework Kconfig settings	2018-02-25 11:03:52 +01:00
Kconfig.kasan	mm, slub, kasan: enable user tracking by default with KASAN=y	2015-11-05 19:34:48 -08:00
Kconfig.kgdb
Kconfig.kmemcheck
kfifo.c
klist.c	klist: fix starting point removed bug in klist iterators	2016-02-25 12:01:16 -08:00
kobject_uevent.c
kobject.c	lib/kobject.c: use kvasprintf_const for formatting ->name	2015-11-06 17:50:42 -08:00
kstrtox.c	lib: add "on"/"off" support to kstrtobool	2016-10-28 03:01:31 -04:00
kstrtox.h
lcm.c
libcrc32c.c	crypto: crc32c - Fix crc32c soft dependency	2016-02-17 12:31:04 -08:00
list_debug.c
list_sort.c
llist.c	lib/llist.c: fix data race in llist_del_first	2015-11-06 17:50:42 -08:00
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
lockref.c
lru_cache.c
Makefile	x86/hweight: Get rid of the special calling convention	2018-04-24 09:32:04 +02:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
nlattr.c
nmi_backtrace.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c	509: fix printing uninitialized stack memory when OID is empty	2018-02-25 11:03:40 +01:00
once.c	once: make helper generic for calling functions once	2015-10-08 05:26:36 -07:00
parser.c
pci_iomap.c
percpu_counter.c
percpu_ida.c	mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM	2015-11-06 17:50:42 -08:00
percpu_test.c
percpu-refcount.c
plist.c
pm-notifier-error-inject.c
proportions.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
radix-tree.c	radix-tree: fix race in gang lookup	2016-02-25 12:01:23 -08:00
random32.c	random32: add prandom_init_once helper for own rngs	2015-10-08 05:26:38 -07:00
ratelimit.c
rational.c
rbtree_test.c
rbtree.c
reciprocal_div.c
rhashtable.c	rhashtable: Kill harmless RCU warning in rhashtable_walk_init	2015-12-18 23:44:18 -05:00
scatterlist.c
seq_buf.c
sg_split.c
sha1.c
show_mem.c
smp_processor_id.c
sort.c
stmp_device.c
string_helpers.c	string_helpers: fix precision loss for some inputs	2016-02-25 12:01:21 -08:00
string.c	lib: move strtobool() to kstrtobool()	2016-10-28 03:01:30 -04:00
strncpy_from_user.c
strnlen_user.c
swiotlb.c	swiotlb: ensure that page-sized mappings are page-aligned	2017-07-05 14:37:20 +02:00
syscall.c
test_bpf.c	bpf: introduce BPF_JIT_ALWAYS_ON config	2018-02-03 17:04:24 +01:00
test_firmware.c	test: firmware_class: report errors properly on failure	2017-11-15 17:13:13 +01:00
test_kasan.c	lib: test_kasan: add some testcases	2015-11-05 19:34:48 -08:00
test_module.c
test_printf.c	test_printf: test printf family at runtime	2015-11-06 17:50:42 -08:00
test_rhashtable.c
test_static_key_base.c
test_static_keys.c
test_user_copy.c	usercopy: Adjust tests to deal with SMAP/PAN	2017-06-14 13:16:27 +02:00
test-hexdump.c
test-kstrtox.c
test-string_helpers.c	lib/test-string_helpers.c: fix and improve string_get_size() tests	2016-05-11 11:21:26 +02:00
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ucs2_string.c	lib/ucs2_string: Correct ucs2 -> utf8 conversion	2016-03-03 15:07:09 -08:00
usercopy.c
uuid.c
vsprintf.c	lib/vsprintf.c: update documentation	2015-11-06 17:50:42 -08:00