aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/traps.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/traps.c')
-rw-r--r--arch/x86/kernel/traps.c20
1 files changed, 7 insertions, 13 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index a1d288327ff0..07d60c870ce2 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -839,9 +839,6 @@ asmlinkage void math_state_restore(void)
839 } 839 }
840 840
841 clts(); /* Allow maths ops (or we recurse) */ 841 clts(); /* Allow maths ops (or we recurse) */
842#ifdef CONFIG_X86_32
843 restore_fpu(tsk);
844#else
845 /* 842 /*
846 * Paranoid restore. send a SIGSEGV if we fail to restore the state. 843 * Paranoid restore. send a SIGSEGV if we fail to restore the state.
847 */ 844 */
@@ -850,7 +847,7 @@ asmlinkage void math_state_restore(void)
850 force_sig(SIGSEGV, tsk); 847 force_sig(SIGSEGV, tsk);
851 return; 848 return;
852 } 849 }
853#endif 850
854 thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */ 851 thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */
855 tsk->fpu_counter++; 852 tsk->fpu_counter++;
856} 853}
@@ -945,8 +942,13 @@ void __init trap_init(void)
945#endif 942#endif
946 set_intr_gate(19, &simd_coprocessor_error); 943 set_intr_gate(19, &simd_coprocessor_error);
947 944
945 /* Reserve all the builtin and the syscall vector: */
946 for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++)
947 set_bit(i, used_vectors);
948
948#ifdef CONFIG_IA32_EMULATION 949#ifdef CONFIG_IA32_EMULATION
949 set_system_intr_gate(IA32_SYSCALL_VECTOR, ia32_syscall); 950 set_system_intr_gate(IA32_SYSCALL_VECTOR, ia32_syscall);
951 set_bit(IA32_SYSCALL_VECTOR, used_vectors);
950#endif 952#endif
951 953
952#ifdef CONFIG_X86_32 954#ifdef CONFIG_X86_32
@@ -963,17 +965,9 @@ void __init trap_init(void)
963 } 965 }
964 966
965 set_system_trap_gate(SYSCALL_VECTOR, &system_call); 967 set_system_trap_gate(SYSCALL_VECTOR, &system_call);
966#endif
967
968 /* Reserve all the builtin and the syscall vector: */
969 for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++)
970 set_bit(i, used_vectors);
971
972#ifdef CONFIG_X86_64
973 set_bit(IA32_SYSCALL_VECTOR, used_vectors);
974#else
975 set_bit(SYSCALL_VECTOR, used_vectors); 968 set_bit(SYSCALL_VECTOR, used_vectors);
976#endif 969#endif
970
977 /* 971 /*
978 * Should be a barrier for any external CPU state: 972 * Should be a barrier for any external CPU state:
979 */ 973 */