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-rw-r--r--arch/x86/lib/Makefile2
-rw-r--r--arch/x86/lib/cache-smp.c19
-rw-r--r--arch/x86/lib/copy_user_64.S6
-rw-r--r--arch/x86/lib/memcpy_64.S23
-rw-r--r--arch/x86/lib/memset_64.S18
5 files changed, 34 insertions, 34 deletions
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index fff14272dbad..710cc1405866 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -14,7 +14,7 @@ $(obj)/inat.o: $(obj)/inat-tables.c
clean-files := inat-tables.c
-obj-$(CONFIG_SMP) += msr-smp.o
+obj-$(CONFIG_SMP) += msr-smp.o cache-smp.o
lib-y := delay.o
lib-y += thunk_$(BITS).o
diff --git a/arch/x86/lib/cache-smp.c b/arch/x86/lib/cache-smp.c
new file mode 100644
index 000000000000..a3c668875038
--- /dev/null
+++ b/arch/x86/lib/cache-smp.c
@@ -0,0 +1,19 @@
+#include <linux/smp.h>
+#include <linux/module.h>
+
+static void __wbinvd(void *dummy)
+{
+ wbinvd();
+}
+
+void wbinvd_on_cpu(int cpu)
+{
+ smp_call_function_single(cpu, __wbinvd, NULL, 1);
+}
+EXPORT_SYMBOL(wbinvd_on_cpu);
+
+int wbinvd_on_all_cpus(void)
+{
+ return on_each_cpu(__wbinvd, NULL, 1);
+}
+EXPORT_SYMBOL(wbinvd_on_all_cpus);
diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S
index cf889d4e076a..71100c98e337 100644
--- a/arch/x86/lib/copy_user_64.S
+++ b/arch/x86/lib/copy_user_64.S
@@ -90,12 +90,6 @@ ENTRY(_copy_from_user)
CFI_ENDPROC
ENDPROC(_copy_from_user)
-ENTRY(copy_user_generic)
- CFI_STARTPROC
- ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string
- CFI_ENDPROC
-ENDPROC(copy_user_generic)
-
.section .fixup,"ax"
/* must zero dest */
ENTRY(bad_from_user)
diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S
index ad5441ed1b57..f82e884928af 100644
--- a/arch/x86/lib/memcpy_64.S
+++ b/arch/x86/lib/memcpy_64.S
@@ -20,12 +20,11 @@
/*
* memcpy_c() - fast string ops (REP MOVSQ) based variant.
*
- * Calls to this get patched into the kernel image via the
+ * This gets patched over the unrolled variant (below) via the
* alternative instructions framework:
*/
- ALIGN
-memcpy_c:
- CFI_STARTPROC
+ .section .altinstr_replacement, "ax", @progbits
+.Lmemcpy_c:
movq %rdi, %rax
movl %edx, %ecx
@@ -35,8 +34,8 @@ memcpy_c:
movl %edx, %ecx
rep movsb
ret
- CFI_ENDPROC
-ENDPROC(memcpy_c)
+.Lmemcpy_e:
+ .previous
ENTRY(__memcpy)
ENTRY(memcpy)
@@ -128,16 +127,10 @@ ENDPROC(__memcpy)
* It is also a lot simpler. Use this when possible:
*/
- .section .altinstr_replacement, "ax"
-1: .byte 0xeb /* jmp <disp8> */
- .byte (memcpy_c - memcpy) - (2f - 1b) /* offset */
-2:
- .previous
-
.section .altinstructions, "a"
.align 8
.quad memcpy
- .quad 1b
+ .quad .Lmemcpy_c
.byte X86_FEATURE_REP_GOOD
/*
@@ -145,6 +138,6 @@ ENDPROC(__memcpy)
* so it is silly to overwrite itself with nops - reboot is the
* only outcome...
*/
- .byte 2b - 1b
- .byte 2b - 1b
+ .byte .Lmemcpy_e - .Lmemcpy_c
+ .byte .Lmemcpy_e - .Lmemcpy_c
.previous
diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S
index 2c5948116bd2..e88d3b81644a 100644
--- a/arch/x86/lib/memset_64.S
+++ b/arch/x86/lib/memset_64.S
@@ -12,9 +12,8 @@
*
* rax original destination
*/
- ALIGN
-memset_c:
- CFI_STARTPROC
+ .section .altinstr_replacement, "ax", @progbits
+.Lmemset_c:
movq %rdi,%r9
movl %edx,%r8d
andl $7,%r8d
@@ -29,8 +28,8 @@ memset_c:
rep stosb
movq %r9,%rax
ret
- CFI_ENDPROC
-ENDPROC(memset_c)
+.Lmemset_e:
+ .previous
ENTRY(memset)
ENTRY(__memset)
@@ -118,16 +117,11 @@ ENDPROC(__memset)
#include <asm/cpufeature.h>
- .section .altinstr_replacement,"ax"
-1: .byte 0xeb /* jmp <disp8> */
- .byte (memset_c - memset) - (2f - 1b) /* offset */
-2:
- .previous
.section .altinstructions,"a"
.align 8
.quad memset
- .quad 1b
+ .quad .Lmemset_c
.byte X86_FEATURE_REP_GOOD
.byte .Lfinal - memset
- .byte 2b - 1b
+ .byte .Lmemset_e - .Lmemset_c
.previous