x86, xsave: Sync xsave memory layout with its header for user handling

[mv-sheeva.git] / arch / x86 / kernel / i387.c

diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index 86cef6b322530ffecaa657ecda41b6cf2619fb47..6106af9fd129111323c6c64b812d2972af7eb5d5 100644 (file)
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -190,6 +190,8 @@ int xfpregs_get(struct task_struct *target, const struct user_regset *regset,
        if (ret)
                return ret;
 
+       sanitize_i387_state(target);
+
        return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
                                   &target->thread.fpu.state->fxsave, 0, -1);
 }
@@ -207,6 +209,8 @@ int xfpregs_set(struct task_struct *target, const struct user_regset *regset,
        if (ret)
                return ret;
 
+       sanitize_i387_state(target);
+
        ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
                                 &target->thread.fpu.state->fxsave, 0, -1);
 
@@ -446,6 +450,8 @@ int fpregs_get(struct task_struct *target, const struct user_regset *regset,
                                           -1);
        }
 
+       sanitize_i387_state(target);
+
        if (kbuf && pos == 0 && count == sizeof(env)) {
                convert_from_fxsr(kbuf, target);
                return 0;
@@ -467,6 +473,8 @@ int fpregs_set(struct task_struct *target, const struct user_regset *regset,
        if (ret)
                return ret;
 
+       sanitize_i387_state(target);
+
        if (!HAVE_HWFP)
                return fpregs_soft_set(target, regset, pos, count, kbuf, ubuf);
 
@@ -533,6 +541,9 @@ static int save_i387_xsave(void __user *buf)
        struct _fpstate_ia32 __user *fx = buf;
        int err = 0;
 
+
+       sanitize_i387_state(tsk);
+
        /*
         * For legacy compatible, we always set FP/SSE bits in the bit
         * vector while saving the state to the user context.