From: Yang Shi <[email protected]> Date: Mon, 16 May 2016 16:36:26 -0700
> In the current implementation of ARM64 eBPF JIT, R23 and R24 are used for > tmp registers, which are callee-saved registers. This leads to variable size > of JIT prologue and epilogue. The latest blinding constant change prefers to > constant size of prologue and epilogue. AAPCS reserves R9 ~ R15 for temp > registers which not need to be saved/restored during function call. So, > replace > R23 and R24 to R10 and R11, and remove tmp_used flag to save 2 instructions > for > some jited BPF program. > > CC: Daniel Borkmann <[email protected]> > Acked-by: Zi Shen Lim <[email protected]> > Signed-off-by: Yang Shi <[email protected]> Applied.
