From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E0F99F8FA8F for ; Tue, 21 Apr 2026 14:55:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=XOUBKHSOmUmi76tR4PAOF3Mt2te2VGIkom7XZ8NuAZM=; b=3DoqtmuhVSGLUQ XQvptLbBQ0xbOfm+yDiY3Y3a789+fttM6uAEi/sfJx08b2udUrF7nF0+XOK0mj28Au9beChflDnnS 8voMHbAarmlr945VmMylGfAWVV31eTFLB6iTBcxHoyKEcsoF46HrQZ7Cs/y+ToG0BL+23DLVpkWeg mkhQcv46YB46Uhta6hPeHDZDFnKDZ43q4JioG2DpgM3t9uZNH7X0dMR4f8ogMHzgdQLVA6oElBG9O aQRRnzpFWj91nQk0pIM2UWJi6rPegetBadiCBrkX1jAkGgLoTc4EYDv6QRObFVbGNVybbrNkghnLv 2q4D8UVF7wuNTHJJD/2w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFCVh-00000008n1T-3wfc; Tue, 21 Apr 2026 14:55:34 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFCVg-00000008n19-24rS; Tue, 21 Apr 2026 14:55:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 8C1196001A; Tue, 21 Apr 2026 14:55:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37742C2BCB0; Tue, 21 Apr 2026 14:55:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776783331; bh=YJ2E3MhSG9OVK7lke/JRpHjm6mu73ya3Y7+/iS3WWDM=; h=From:To:Cc:Subject:Date:From; b=HZ/sEA+K10hNXtWTJvFffYw8Z3Vg0VinNxwMcbVAvO33uI31wLuDQc0g8bj3/aTSX gtOmieO+tBvgy/ufiZkK+9wVDFxD2xxQZBmqIU+zaSiSQNmZN9SYdtSUIfiK2Kyvua wGfRaVQoD4+KjzCQzJzZ7o/Nzq/kR01SCP/9pvc8nFAMlZueDB08So+crDElLkPscZ aEd8WHpEtf1OO7uAap7uHq5quL1CvY3j/0mDbqJnwWoqrSBIohIexYjpuBv+gcCJfP d1Y8KZnhK/4gRINqaO7b4Yr2uLUzKjqe8xLBNRU6Ud/LZOeK6jHvy5kQUbXdM4lj9B 7zi6Dho/j6Lxg== From: guoren@kernel.org To: fangyu.yu@linux.alibaba.com, cp0613@linux.alibaba.com, inochiama@gmail.com, me@ziyao.cc, gaohan@iscas.ac.cn, anup@brainfault.org, atish.patra@linux.dev, pjw@kernel.org, palmer@dabbelt.com, alex@ghiti.fr, tglx@kernel.org, Albert Ou Cc: kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, "Guo Ren (Alibaba DAMO Academy)" , linux-riscv@lists.infradead.org Subject: [PATCH 0/3] RISC-V: KVM: AIA: Convert HGEI management to fully per-HART Date: Tue, 21 Apr 2026 10:54:47 -0400 Message-Id: <20260421145451.1597930-1-guoren@kernel.org> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: "Guo Ren (Alibaba DAMO Academy)" This short series converts RISC-V KVM AIA's Hypervisor Guest External Interrupt (HGEI) line management from a global "one-size-fits-all" model to a fully per-HART (per-CPU) model. It also performs the corresponding cleanup in the IMSIC irqchip driver. The motivation is to properly support heterogeneous RISC-V SoCs (big.LITTLE, multi-vendor core mixes) where different HARTs may expose different numbers of guest interrupt files / HGEIE bits. The old global `kvm_riscv_aia_nr_hgei` and `imsic_global_config::nr_guest_files` assumptions are no longer tenable and are removed. After this series, HGEI allocation, freeing, and interrupt delivery are completely per-HART, the code is simpler and clearer, and there are no remaining global assumptions about guest interrupt file counts. Guo Ren (Alibaba DAMO Academy) (3): RISC-V: KVM: AIA: Make HGEI number and management fully per-CPU RISC-V: KVM: AIA: Replace global HGEI count with simple enabled bool irqchip/riscv-imsic: Remove global nr_guest_files after KVM AIA per-HART conversion arch/riscv/include/asm/kvm_aia.h | 2 +- arch/riscv/kvm/aia.c | 58 ++++++++++++++----------- arch/riscv/kvm/aia_device.c | 4 +- arch/riscv/kvm/main.c | 3 +- drivers/irqchip/irq-riscv-imsic-state.c | 12 +---- include/linux/irqchip/riscv-imsic.h | 3 -- 6 files changed, 37 insertions(+), 45 deletions(-) -- 2.40.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv