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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 0C5ACCD8C9D for ; Mon, 8 Jun 2026 14:54:11 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4gYw4d1mc3z3cb7; Tue, 09 Jun 2026 00:52:33 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=85.214.250.239 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1780930351; cv=none; b=GxjQ4zWdN3sOh32/+HV9IVJnMDU9GWfr0JkzZC/0a+5MQP0SqVgFY6prdw7EJ4kSZl6PIu4zHmHdERW+QtQV3alDsR8CmLF67k08I7Fnl3IHX5AfnRwDaXhMeOv3OrO4+LoxupcC3za4xTfmf4OLXpvwVxA0tjXwW1VuGjfJnEol3S09r4tX6SnX6ShjNAjhDA51sW1JicpYLDrMb4NMrSkdEMyDMkmQkaKAKZQEux9fnZnJxNPxFUuI4CvrRxOSJDEskLYUrABCcWa2H6f3ujDfKQM3kTFlnuTFJxQaj8ErOx5FfDIFyvfB4LkTN4+zsfJjN0OByiwqhVuFWQNPbw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1780930351; c=relaxed/relaxed; bh=jFFUvyiHES8ja/EMt+EoKa2gVZyIvQ++Vm5xoc+AD98=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PSysxVeuOOP3WQgp5Hp4630ouG288rngDo2QFCaPcozE+fTMeFSe9GJ+vzjniLgOyuuFTQ25av7mGleX2AxENfgyOejisU5BG88g4Sn/rZOqYKIkQvpEG/Mxoi/Hz8TR6LaUjgbnOORj7R1k3zF0tE1zzj6OqHrKglGpva5bU1XSGF1gEIhmhoslCmG8IVeNtGh0H8nBgN4k8nf0zaahBcz/b3c5iWSVldGQifqvX0yNBGSzgRjyekRUSC1x4moEVa0hgeVFIxX3NH/5nARpbu9qaYMolNw6SWqnnV+ZLBJtl2d4PTv7UioXWD4pVNQn05n6QBeMcHkWzRTJT/uLmA== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=8bytes.org; spf=pass (client-ip=85.214.250.239; helo=mail.8bytes.org; envelope-from=joro@8bytes.org; receiver=lists.ozlabs.org) smtp.mailfrom=8bytes.org Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=8bytes.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=8bytes.org (client-ip=85.214.250.239; helo=mail.8bytes.org; envelope-from=joro@8bytes.org; receiver=lists.ozlabs.org) Received: from mail.8bytes.org (mail.8bytes.org [85.214.250.239]) by lists.ozlabs.org (Postfix) with ESMTP id 4gYw4Q31cHz3c3x for ; Tue, 09 Jun 2026 00:52:22 +1000 (AEST) Received: from io.home.8bytes.org (p4ffe1d30.dip0.t-ipconnect.de [79.254.29.48]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.8bytes.org (Postfix) with ESMTPSA id 5E0962028C5; Mon, 8 Jun 2026 16:43:12 +0200 (CEST) From: =?UTF-8?q?J=C3=B6rg=20R=C3=B6del?= To: Paolo Bonzini , Sean Christopherson Cc: Tom Lendacky , ashish.kalra@amd.com, michael.roth@amd.com, nsaenz@amazon.com, anelkz@amazon.de, James.Bottomley@HansenPartnership.com, Melody Wang , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, x86@kernel.org, coconut-svsm@lists.linux.dev, joerg.roedel@amd.com Subject: [PATCH 34/60] kvm: Keep track of plane VCPUs in struct kvm_vcpu_common Date: Mon, 8 Jun 2026 16:42:26 +0200 Message-ID: <20260608144252.351443-35-joro@8bytes.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260608144252.351443-1-joro@8bytes.org> References: <20260608144252.351443-1-joro@8bytes.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Joerg Roedel Introduce an array which keeps track of per-plane VCPU instances for a single VCPU index. This is a short-cut to not always tranverse the xarrays on plane switches. Signed-off-by: Joerg Roedel --- include/linux/kvm_host.h | 6 ++++++ virt/kvm/kvm_main.c | 3 +++ 2 files changed, 9 insertions(+) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index b8c3f8f11cb4..5c3f9dfa15ea 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -335,6 +335,8 @@ struct kvm_vcpu_common { /* Currently active VCPU */ struct kvm_vcpu *current_vcpu; + struct kvm_vcpu *vcpus[KVM_MAX_PLANES]; + /* Locks */ int ____srcu_idx; /* Don't use this directly. You've been warned. */ #ifdef CONFIG_PROVE_RCU @@ -382,6 +384,10 @@ struct kvm_vcpu_common { struct kvm_vcpu_arch_common arch; }; +#define vcpu_for_each_plane(common, i, v) \ + for ((i) = 0; (i) < KVM_MAX_PLANES; ++(i)) \ + if (((v) = common->vcpus[(i)]) != NULL) + struct kvm_vcpu { struct kvm *kvm; struct kvm_plane *plane; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 8839f91fd15e..9d30fd85ce5f 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -524,6 +524,8 @@ static int kvm_vcpu_init_common(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned static void kvm_vcpu_finish_common(struct kvm_vcpu *vcpu) { + WARN_ON(vcpu->common->vcpus[vcpu->plane_level] != NULL); + vcpu->common->vcpus[vcpu->plane_level] = vcpu; smp_wmb(); if (vcpu->plane_level == 0) { /* @@ -555,6 +557,7 @@ static void kvm_vcpu_common_destroy(struct kvm_vcpu *vcpu) vcpu->common = NULL; vcpu->run = NULL; + common->vcpus[vcpu->plane_level] = NULL; if (vcpu->plane_level != 0) return; -- 2.53.0