RE: [PATCH 6/7] KVM: VMX: Provide separate subroutines for invoking NMI vs. IRQ handlers

[Li, Xin3]

> +
> +	/*
> +	 * "Restore" RSP from RBP, even though IRET has already unwound
> RSP to
> +	 * the correct value.  objtool doesn't know the callee will IRET and,
> +	 * without the explicit restore, thinks the stack is getting walloped.
> +	 * Using an unwind hint is problematic due to x86-64's dynamic
> alignment.
> +	 */
> +	mov %_ASM_BP, %_ASM_SP
> +	pop %_ASM_BP
> +	RET

For NMI, after this RET instruction, we continue to block NMIs. IRET instead?

> +.endm
> +
>  .section .noinstr.text, "ax"