Re: [Qemu-devel] Qemu and heavily increased RSS usage

[Paolo Bonzini]

On 23/06/2016 16:58, Peter Lieven wrote:
> commit ba3f4f64b0e941b9e03568b826746941bef071f9
> Author: Paolo Bonzini <address@hidden>
> Date:   Wed Jan 21 12:09:14 2015 +0100
> 
>     exec: RCUify AddressSpaceDispatch
> 
>     Note that even after this patch, most callers of address_space_*
>     functions must still be under the big QEMU lock, otherwise the memory
>     region returned by address_space_translate can disappear as soon as
>     address_space_translate returns.  This will be fixed in the next part
>     of this series.
> 
>     Reviewed-by: Fam Zheng <address@hidden>
>     Signed-off-by: Paolo Bonzini <address@hidden>
> 
> @Paolo, @Fam, any idea?

When you use RCU, freeing stuff is delayed a bit.

Paolo