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-rw-r--r--arch/powerpc/kernel/sysfs.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index f0f2199e64e..d62af950695 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -192,6 +192,12 @@ static ssize_t show_dscr_default(struct sysdev_class *class,
return sprintf(buf, "%lx\n", dscr_default);
}
+static void update_dscr(void *dummy)
+{
+ if (!current->thread.dscr_inherit)
+ mtspr(SPRN_DSCR, dscr_default);
+}
+
static ssize_t __used store_dscr_default(struct sysdev_class *class,
struct sysdev_class_attribute *attr, const char *buf,
size_t count)
@@ -204,6 +210,8 @@ static ssize_t __used store_dscr_default(struct sysdev_class *class,
return -EINVAL;
dscr_default = val;
+ on_each_cpu(update_dscr, NULL, 1);
+
return count;
}