On Thu, 18 Jan 2018 05:01:57 -0800 Andi Kleen <[email protected]> wrote:
> > Side effect: [1/3] will move __x86_indirect_thunk_* functions > > in kernel text area. Of course those functions were in the > > .text area, but placed in right after _etext. This just moves > > it right before the _etext. > > I assume you tested that with page table isolation on? > > The thunks need to be accessible from the trampoline. Yes, I've tested the kernel with CONFIG_PAGE_TABLE_ISOLATION=y. As David pointed, maybe all those points are using JMP/CALL_NOSPEC macro directly? Thanks, > > -Andi -- Masami Hiramatsu <[email protected]>
