1 files changed, 19 insertions, 0 deletions

diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 44a8e0dc673..cd49141cf15 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -53,6 +53,7 @@
 #include <asm/processor-flags.h>
 #include <asm/ftrace.h>
 #include <asm/irq_vectors.h>
+#include <asm/cpufeature.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
 #include <linux/elf-em.h>
@@ -905,7 +906,25 @@ ENTRY(simd_coprocessor_error)
         RING0_INT_FRAME
         pushl $0
         CFI_ADJUST_CFA_OFFSET 4
+#ifdef CONFIG_X86_INVD_BUG
+        /* AMD 486 bug: invd from userspace calls exception 19 instead of #GP */
+661:    pushl $do_general_protection
+662:
+.section .altinstructions,"a"
+        .balign 4
+        .long 661b
+        .long 663f
+        .byte X86_FEATURE_XMM
+        .byte 662b-661b
+        .byte 664f-663f
+.previous
+.section .altinstr_replacement,"ax"
+663:    pushl $do_simd_coprocessor_error
+664:
+.previous
+#else
         pushl $do_simd_coprocessor_error
+#endif
         CFI_ADJUST_CFA_OFFSET 4
         jmp error_code
         CFI_ENDPROC