diff options
| author | Andi Kleen <ak@suse.de> | 2006-09-30 01:47:55 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-30 01:47:55 +0200 |
| commit | 34596dc9e59d7bece16fe5aba08116b49465da26 (patch) | |
| tree | 75e09786a8ff8db3a69a5c82663f97d317e59e46 /arch/x86_64 | |
| parent | 120b114237e2461fb4fa437c5c37edf014c916b9 (diff) | |
[PATCH] Define vsyscall cache as blob to make clearer that user space shouldn't use it
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/kernel/vsyscall.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c index ac48c3857dd..07c08638205 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; |