This patch makes the write() file operation smp aware. Which means, receiving the vcpu_id value through the offset parameter, and being well aware to which vcpu we're talking to.
Signed-off-by: Glauber de Oliveira Costa <[EMAIL PROTECTED]> --- drivers/lguest/lguest_user.c | 11 +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c index 894d530..ae5bf4c 100644 --- a/drivers/lguest/lguest_user.c +++ b/drivers/lguest/lguest_user.c @@ -223,14 +223,21 @@ static ssize_t write(struct file *file, const char __user *in, struct lguest *lg = file->private_data; const unsigned long __user *input = (const unsigned long __user *)in; unsigned long req; + struct lguest_vcpu *vcpu = NULL; + int vcpu_id = *off; if (get_user(req, input) != 0) return -EFAULT; input++; /* If you haven't initialized, you must do that first. */ - if (req != LHREQ_INITIALIZE && !lg) - return -EINVAL; + if (req != LHREQ_INITIALIZE) { + if (!lg) + return -EINVAL; + vcpu = &lg->vcpus[vcpu_id]; + if (!vcpu) + return -EINVAL; + } /* Once the Guest is dead, all you can do is read() why it died. */ if (lg && lg->dead) -- 1.5.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/