diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2022-01-30 21:25:53 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2022-01-30 21:26:39 -0500 |
| commit | 6692531df62d812de5d22c8bca0d90edc163aa84 (patch) | |
| tree | 1d5b5b7ef15676ad8f95a80834b1a2e9a2da2a97 | |
| parent | 0c9dceb9bb6dadbf340f09c69e598d4729bbb86a (diff) | |
uml/x86: use x86 load_unaligned_zeropad()
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>
| -rw-r--r-- | arch/um/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/x86/lib/csum-partial_64.c | 26 | ||||
| -rw-r--r-- | arch/x86/um/Kconfig | 1 |
3 files changed, 1 insertions, 27 deletions
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild index e5a7b552bb38..a58b67ec8119 100644 --- a/arch/um/include/asm/Kbuild +++ b/arch/um/include/asm/Kbuild @@ -23,7 +23,6 @@ generic-y += softirq_stack.h 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 diff --git a/arch/x86/lib/csum-partial_64.c b/arch/x86/lib/csum-partial_64.c index 1f8a8f895173..50734a23034c 100644 --- a/arch/x86/lib/csum-partial_64.c +++ b/arch/x86/lib/csum-partial_64.c @@ -93,7 +93,6 @@ __wsum csum_partial(const void *buff, int len, __wsum sum) buff += 8; } if (len & 7) { -#ifdef CONFIG_DCACHE_WORD_ACCESS unsigned int shift = (8 - (len & 7)) * 8; unsigned long trail; @@ -103,31 +102,6 @@ __wsum csum_partial(const void *buff, int len, __wsum sum) "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 $0,%[res]" - : [res] "+r" (temp64) - : [val] "r" ((u64)*(u8 *)buff) - : "memory"); - } -#endif } result = add32_with_carry(temp64 >> 32, temp64 & 0xffffffff); if (unlikely(odd)) { diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig index 40d6a06e41c8..4eb47d3ba625 100644 --- a/arch/x86/um/Kconfig +++ b/arch/x86/um/Kconfig @@ -8,6 +8,7 @@ endmenu config UML_X86 def_bool y + select DCACHE_WORD_ACCESS config 64BIT bool "64-bit kernel" if "$(SUBARCH)" = "x86" |