From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH v3 1/4] KVM: x86: Split the APIC from the rest of IRQCHIP. Date: Fri, 5 Jun 2015 03:19:34 -0400 (EDT) Message-ID: <2129177540.15767728.1433488774623.JavaMail.zimbra@redhat.com> References: <1433289107-20638-1-git-send-email-srutherford@google.com> <556EC0D1.8050506@redhat.com> <20150604203820.GA28041@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Steve Rutherford Return-path: Received: from mx6-phx2.redhat.com ([209.132.183.39]:33564 "EHLO mx6-phx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751074AbbFEHTh (ORCPT ); Fri, 5 Jun 2015 03:19:37 -0400 In-Reply-To: <20150604203820.GA28041@google.com> Sender: kvm-owner@vger.kernel.org List-ID: > From the perspective of avoiding impacting other architectures, this is a > good idea, but the naming seems strange in the x86 case. Having > irqchip_in_kernel be "true" when the ioapic/pic are in userspace seems > strange. Admittedly, the irqchip isn't a "real" concept on x86, so > inventing a new meaning is fine. >>From the KVM point of view, the "irqchip" is whatever delivers interrupts to the vCPU---which is the LAPIC for x86. Paolo