From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.8bytes.org (mail.8bytes.org [85.214.250.239]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B49E93F39DC; Mon, 8 Jun 2026 14:43:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=85.214.250.239 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780929809; cv=none; b=AMJaIgbpXlzvMp3vamAahNE1fjYurfObHzg3+4xYpRwgO410ZSWiCWV4Lr42bym1wahHdPNgBo/Bm2soZjApP7Y/5qOzC8vVvw72CBWFleQgbsIENrUblCEZRLon/Qps828+zsbQNNSxbFHWGOmJcw2uPc1DAeGlTnQeo+1e2HM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780929809; c=relaxed/simple; bh=+10xLxSz2hdoIHB3HQB3QYazOPEqpz5qTWBbJNGvwo0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nDM4390/Ref+hYWFiraYYe6QdHxY1z9KgtyX/BXUmIc0+W9s4K8svIhwAEK0vrG5RKN+G7g/HlB3RHIxdHb+psjlfSnbKrnvLIzQ6scB2mplzpi+XIYVT3xlZY3LRXUaMR8hhebPCfQQXlWi+JW0brqz6XjpSb/uhNSzm7i3VFA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=8bytes.org; spf=pass smtp.mailfrom=8bytes.org; arc=none smtp.client-ip=85.214.250.239 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=8bytes.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=8bytes.org 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> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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