Re: [Qemu-devel] [RFC v4 1/9] exec.c: Add new exclusive bitmap to ram_list

[Paolo Bonzini]

On 11/08/2015 17:54, alvise rigo wrote:
> This can lead to an excessive rate of flush requests, since for one
> CPU that removes the TLB_EXCL flag, all the others that are competing
> for the same excl address will need to flush the entire cache and
> start all over again.

Why flush the entire cache (I understand you mean TLB)?

Paolo

> If for a start we want to have a simpler implementation, I can revert
> back to the one-bit design.