[PATCH] Define vsyscall cache as blob to make clearer that user space shouldn't use it

Signed-off-by: Andi Kleen <ak@suse.de>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c
index ac48c3857ddb..07c086382059 100644
--- a/arch/x86_64/kernel/vsyscall.c
+++ b/arch/x86_64/kernel/vsyscall.c
@@ -155,8 +155,8 @@ vgetcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
            We do this here because otherwise user space would do it on
            its own in a likely inferior way (no access to jiffies).
            If you don't like it pass NULL. */
-        if (tcache && tcache->t0 == (j = __jiffies)) {
-                p = tcache->t1;
+        if (tcache && tcache->blob[0] == (j = __jiffies)) {
+                p = tcache->blob[1];
         } else if (__vgetcpu_mode == VGETCPU_RDTSCP) {
                 /* Load per CPU data from RDTSCP */
                 rdtscp(dummy, dummy, p);
@@ -165,8 +165,8 @@ vgetcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
                 asm("lsl %1,%0" : "=r" (p) : "r" (__PER_CPU_SEG));
         }
         if (tcache) {
-                tcache->t0 = j;
-                tcache->t1 = p;
+                tcache->blob[0] = j;
+                tcache->blob[1] = p;
         }
         if (cpu)
                 *cpu = p & 0xfff;