Balbir Singh <bsinghar...@gmail.com> writes: > On 18/10/16 19:40, Michael Ellerman wrote: >> We have now had two nasty stack corruption bugs caused by incorrect >> sizing of the return buffer for plpar_hcall()/plpar_hcall9(). >> >> To avoid any more such bugs, define a type which encodes the size of the >> return buffer, and change the argument of plpar_hcall() to be of that >> type, meaning the compiler will check for us that we passed the right >> size buffer. >> >> There isn't an easy way to do this incrementally, without introducing a >> new function name, eg. plpar_hcall_with_struct(), which is ugly as hell. >> So just do it in one tree-wide change. >> > Conceptually looks god, but I think we need to abstract the return values > as well. I'll test and see if I can send you something on top of this
Not sure I know what you mean. cheers
