* - signal delivery,
* and return to user-space.
*
- * This is how we can ensure that the entire rseq critical section,
- * consisting of both the C part and the assembly instruction sequence,
+ * This is how we can ensure that the entire rseq critical section
* will issue the commit instruction only if executed atomically with
* respect to other threads scheduled on the same CPU, and with respect
* to signal handlers.
/* Unregister rseq for current thread. */
if (current->rseq != rseq || !current->rseq)
return -EINVAL;
- if (current->rseq_len != rseq_len)
+ if (rseq_len != sizeof(*rseq))
return -EINVAL;
if (current->rseq_sig != sig)
return -EPERM;
if (ret)
return ret;
current->rseq = NULL;
- current->rseq_len = 0;
current->rseq_sig = 0;
return 0;
}
* the provided address differs from the prior
* one.
*/
- if (current->rseq != rseq || current->rseq_len != rseq_len)
+ if (current->rseq != rseq || rseq_len != sizeof(*rseq))
return -EINVAL;
if (current->rseq_sig != sig)
return -EPERM;
if (!access_ok(rseq, rseq_len))
return -EFAULT;
current->rseq = rseq;
- current->rseq_len = rseq_len;
current->rseq_sig = sig;
/*
* If rseq was previously inactive, and has just been