Hi Ard, On Fri, Nov 23, 2018 at 06:29:02PM +0100, Ard Biesheuvel wrote: > On arm64, all executable code is guaranteed to reside in the vmalloc > space (or the module space), and so jump targets will only use 48 > bits at most, and the remaining bits are guaranteed to be 0x1. > > This means we can generate an immediate jump address using a sequence > of one MOVN (move wide negated) and two MOVK instructions, where the > first one sets the lower 16 bits but also sets all top bits to 0x1. > > Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> > ---
Acked-by: Will Deacon <will.dea...@arm.com> Denial, Alexei, shall I take this via arm64, or would you rather take it via davem? Cheers, Will
