Re: [PATCH v2 2/2] x86/defconfig: Add CONFIG_IRQ_REMAP
From: Thomas Gleixner
Date: Sun Mar 08 2026 - 05:22:23 EST
On Fri, Mar 06 2026 at 14:46, Shashank Balaji wrote:
> x2apic is enabled in the defconfig, and interrupt remapping is an architectural
> dependency of x2apic as per the Intel SDM:
>
> Routing of device interrupts to local APIC units operating in x2APIC
> mode requires use of the interrupt-remapping architecture specified in
> the Intel® Virtualization Technology for Directed I/O (Revision 1.3
> and/or later versions).
>
> Enable CONFIG_IRQ_REMAP in defconfig so that a defconfig kernel on bare metal
> actually uses x2apic.
>
> Co-developed-by: Rahul Bukte <rahul.bukte@xxxxxxxx>
> Signed-off-by: Rahul Bukte <rahul.bukte@xxxxxxxx>
> Signed-off-by: Shashank Balaji <shashank.mahadasyam@xxxxxxxx>
Acked-by: Thomas Gleixner <tglx@xxxxxxxxxx>