On 14 January 2016 at 06:03, <cheng...@emindsoft.com.cn> wrote: > From: Chen Gang <cheng...@emindsoft.com.cn> > > Guest may allocate a readable, writable, and executable page, then write > data on the page, and execute data as code on the page too, then write > anther data still within the page. > > So remove this feature from linux-user: it not only consumes a little > performance, but also causes issue with the old Linux kernel under some > of architectures (they will directly generate segment fault for it).
If we don't mark the page as non-writeable when we generate a TB from it, how do we detect when guest code later writes to that page (which means we need to invalidate the TB) ? thanks -- PMM
