From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5138911713 for ; Sat, 15 Mar 2025 02:40:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742006414; cv=none; b=mZiDRRUr4OQO1an99wZ/1db6RCSz6PJf+b9HhpDb8G1iAfYIGr05Su2Rns4DDKqfwwb/1KR8X0wYRmDckjEd0bVxmiyzUAjGsFeuHwH82porlbbmdC0ueuEVkfHhgGQMQ0upQptPphZaHdVOfZvXalBzrASCoNXlNxRDazEkjFg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742006414; c=relaxed/simple; bh=F37DdpTElQ2q2g+ifpTPVUBGVrrJmQS6C1fk1ytOIFE=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=pHfQYkKhll7q0XteJnVEVChk8ig6XibL/okQ3ekjBuIWJx629Llm8XQd+XeS18V93WzUWVq/UGTEEVEZt9blfEDwZCjP1ZRZvuK6hUe0ay7ZfrtXG8maxbcuNc8+xqUsy8jDPOFvadqWLwmh89MB6KUQhOIadqbKDmz25kJRdmg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=HXVJUm9K; arc=none smtp.client-ip=209.85.216.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="HXVJUm9K" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-2ff82dd6de0so439365a91.0 for ; Fri, 14 Mar 2025 19:40:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1742006412; x=1742611212; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:reply-to:from:to:cc :subject:date:message-id:reply-to; bh=p243mb9oLjguco3vJ1B5SxoOuqk2mjKqrxWdDVESxQ4=; b=HXVJUm9KkAvPhhQoykv7Q0oH1PfW1B20eT+oQssC61A5Q7/O4zZ9OTzwgAY730jRCZ FNwhAViVIGb496cMb8fInJUKr5m+qHjcuxcgVmV6aWtg6v7cB+I7eNULzrW4JbkUGKvC MSDuH8rMkfGkvChsDuntpM1r5aoUqdKBh4QNbYJhYw7FcblBndA7xQNdNU3zqXkn922B jaUpQJ96XehwPv6bF6kjkYetXA8JJwluX8B91sYbyeRwHeCKBKbJtJkGh49VTblGosHE kOOKEmydDJ/St/qx+GLffdIWYaOo3cPVjai85ZJ1mBAPmvetP/EJrtkQOXOWyteQXsA/ lXig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742006412; x=1742611212; h=cc:to:from:subject:message-id:mime-version:date:reply-to :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=p243mb9oLjguco3vJ1B5SxoOuqk2mjKqrxWdDVESxQ4=; b=Mwp3EBDnyn1RcTdvb3rzxNwfBdi5Wi+TRvmAH5IYVot9y+lXbNiVsXTZRGopbQsNQj 1HQIJ1c/Xgo8Dex74rI+pjpm4eargijr6208MV0uEJSJ6qvJUn5j9YWP0AxWfztSKtMe umOcf2ZUHYorjL5cuaO2NBarfFv28Um0KMeCgQy+9L3CxOHvKQVTVXitxvxD0dk+K/MO UycnVkFbHi8RS5ZXCzPTLQNsC6jWq8dMGajM4AunUk81hynrmzDjz1nM+mjaGqxpJsfi pryxdORtMwp5vL5Qp3ejWDzd1xzEy/bxI1xcn0yjDFt0F/diicEXGQ6N/KpeDdmHigI2 tymw== X-Forwarded-Encrypted: i=1; AJvYcCVUV768hFZVi7P3aqlT00j1kkh3ZeMZf6ri7QWuD7bJSgurs3q0NW+FeiqWS+jl74633a3sYGc0k15j6H8=@vger.kernel.org X-Gm-Message-State: AOJu0YyGZvrKrCTuxqkdBcQNXMBmN670mO7FWbtQKGO51F8ZddhjhCCp gkuRai3v8Ungm88IVs5ZJMPpFU/CCFgHKIM0MTxYbApFkH4njlLWONbe/hi8JmqM8rXGl0OZLFl jEg== X-Google-Smtp-Source: AGHT+IGl8oTkoFLkt/cHHZ+lGdj9KR0zQyx8nSi0QEJHT+P22WLdQdUmgVzr1J4zJ+0c36Ci2iOcUZvc+50= X-Received: from pjbpt11.prod.google.com ([2002:a17:90b:3d0b:b0:2fc:3022:36b8]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:5247:b0:2ee:a583:e616 with SMTP id 98e67ed59e1d1-30151ce122fmr6575082a91.9.1742006412651; Fri, 14 Mar 2025 19:40:12 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 14 Mar 2025 19:40:07 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.49.0.rc1.451.g8f38331e32-goog Message-ID: <20250315024010.2360884-1-seanjc@google.com> Subject: [PATCH 0/3] KVM: x86: Dynamically allocate hashed page list From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Allocate the hashed list of shadow pages dynamically (separate from struct kvm), and on-demand. The hashed list is 32KiB, i.e. absolutely belongs in a separate allocation, and is worth skipping if KVM isn't shadowing guest PTEs for the VM. Sean Christopherson (3): KVM: x86/mmu: Dynamically allocate shadow MMU's hashed page list KVM: x86: Allocate kvm_vmx/kvm_svm structures using kzalloc() KVM: x86/mmu: Defer allocation of shadow MMU's hashed page list arch/x86/include/asm/kvm_host.h | 6 ++--- arch/x86/kvm/mmu/mmu.c | 48 +++++++++++++++++++++++++++++---- arch/x86/kvm/svm/svm.c | 1 + arch/x86/kvm/vmx/vmx.c | 1 + arch/x86/kvm/x86.c | 5 +++- 5 files changed, 52 insertions(+), 9 deletions(-) base-commit: 7d2154117a02832ab3643fe2da4cdc9d2090dcb2 -- 2.49.0.rc1.451.g8f38331e32-goog