Re: linux-next: Tree for Sep 30 (i386 non-SMP non-APIC w/ IRQ_DOMAIN: build errors)

From: Borislav Petkov
Date: Mon Oct 03 2022 - 17:29:24 EST

On Mon, Oct 03, 2022 at 07:26:29PM +0100, Marc Zyngier wrote:
> Can x86 practically deal with MSIs without the APIC? If not, we should
> instead find a way to forbid MSIs when APIC isn't selected. Or make
> APIC support mandatory.

Well, you need the local APIC in order to send MSIs, that's why
X86_LOCAL_APIC depends on PCI_MSI.

I'll have a look at that .config tomorrow.