From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Date: Wed, 2 Mar 2011 10:00:23 -0800 > No, I think we're ok with passing the structure by value - it's a > small structure that would generally be passed in registers (at least > on some architectures, I guess it will depend on the ABI), and we do > the "struct-by-value" thing for other things too (notably the page > table entries), so it's not a new thing in the kernel. We purposely don't do that "page table entry typedef'd to aggregate" stuff on sparc32 because otherwise such values get passed on the stack. Architectures can currently avoid this bad code generation for the page table case, but with this new code they won't be able to avoid pass-by-value. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>