Re: [PATCH 22/24] x86/entry: Implement and use do_paranoid_entry() and paranoid_exit()

[Peter Zijlstra]

On Wed, Sep 01, 2021 at 01:50:23AM +0800, Lai Jiangshan wrote:

> +	call	do_paranoid_entry
>  	ret

That's normally spelled like:

	jmp do_paranoid_entry

But the same comment as for error_entry but more; pretty much all that's
left in asm is things like:


	call paranoid_entry;

	# setup args
	call \cfunc

	call paranoid_exit

which seems like prime material to also pull into C to avoid the
back-and-forth thing. In fact, why can't you call paranoid_entry/exit
from \cfunc itself? The IDT macros should be able to help.