allows, among other things, to drop !DCACHE_WORD_ACCESS mess in
x86 csum-partial_64.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
generic-y += switch_to.h
generic-y += topology.h
generic-y += trace_clock.h
-generic-y += word-at-a-time.h
generic-y += kprobes.h
generic-y += mm_hooks.h
generic-y += vga.h
buff += 8;
}
if (len & 7) {
-#ifdef CONFIG_DCACHE_WORD_ACCESS
unsigned int shift = (8 - (len & 7)) * 8;
unsigned long trail;
"adcq $0,%[res]"
: [res] "+r" (temp64)
: [trail] "r" (trail));
-#else
- if (len & 4) {
- asm("addq %[val],%[res]\n\t"
- "adcq $0,%[res]"
- : [res] "+r" (temp64)
- : [val] "r" ((u64)*(u32 *)buff)
- : "memory");
- buff += 4;
- }
- if (len & 2) {
- asm("addq %[val],%[res]\n\t"
- "adcq $0,%[res]"
- : [res] "+r" (temp64)
- : [val] "r" ((u64)*(u16 *)buff)
- : "memory");
- buff += 2;
- }
- if (len & 1) {
- asm("addq %[val],%[res]\n\t"
- "adcq $0,%[res]"
- : [res] "+r" (temp64)
- : [val] "r" ((u64)*(u8 *)buff)
- : "memory");
- }
-#endif
}
result = add32_with_carry(temp64 >> 32, temp64 & 0xffffffff);
if (unlikely(odd)) {
config UML_X86
def_bool y
+ select DCACHE_WORD_ACCESS
config 64BIT
bool "64-bit kernel" if "$(SUBARCH)" = "x86"