On Tue, Jul 30, 2024 at 08:24:15AM -0700, Sami Tolvanen wrote: > On Tue, Jul 30, 2024 at 3:32 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > > > On Tue, Jul 30, 2024 at 09:40:12AM +0000, Alice Ryhl wrote: > > > From: Matthew Maurer <mmaurer@xxxxxxxxxx> > > > > > > Make it possible to use the Control Flow Integrity (CFI) sanitizer when > > > Rust is enabled. Enabling CFI with Rust requires that CFI is configured > > > to normalize integer types so that all integer types of the same size > > > and signedness are compatible under CFI. > > > > I am assuming -- because I have to, because you're not actually saying > > anyting -- that this is fully compatible with the C version and all the > > fun and games we play with rewriting the function prologue for FineIBT > > and the like also work? > > Rust uses the same LLVM backend for the actual code generation, so it > should be fully compatible. Yes, but we also combine that with -fpatchable-function-entry= for a very specific effect, and I don't think I see the Rust thingy do that.
