Re: x86: 4kstacks default

[Avi Kivity]

Bernd Eckenfels wrote:
> A question along this line. Why is the Userspace Thread bound to a
> Kernel-Space Stack at all? I could imagine a solution like Stack Pools
> assigned only of a Thread enters kernel space, or something like this?
>
>   

The vast majority of threads are sleeping (with a stack footprint in the 
kernel).  If you have an N-way system, at most N threads can be in 
userspace at any given moment.

You could multiplex several userspace threads on one kernel thread (the 
M:N model), but it gets fairly complex.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/