From patchwork Mon Aug 19 07:08:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kirill A. Shutemov" X-Patchwork-Id: 821023 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4694D1459FA; Mon, 19 Aug 2024 07:08:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724051318; cv=none; b=WE0Ak6gAR/OASF88OKak7tMFnG6HtTq6y1mBv4sQiRsC16kUIuFtvv4QnUtOY+g8goZCf6vfqgdFQcTZkBMWcJ5TzhsCxcNB3w+HgQNieFfnCCJ7hI/PxBSfcdM46syQvemw8H+tH5H7l6QvUPsN3Kk+FfpFFadujIn/o8NaYp8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724051318; c=relaxed/simple; bh=EdzA0t1Rwdo/359oMIkrXU1yMk7yXLkrn4xOvK7DWLY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=nJ+wGp3aLT7pZ3rQeKisaiRBsaI/3QOb/Y0hVHGPR40GhvMjnvRqJUgdNtVYCNrLUfW8COMxzRxXzuQEsIznztMqZt3jGM7Axjfd7lLaHs7/pfxHQ0SRS0L902OGOfCef3j+VMiKGxuM/5j57CNCq6fEZOuxaEzUB0S7M0DAxQ4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.helo=mgamail.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=NzgJkNqn; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.helo=mgamail.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="NzgJkNqn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724051317; x=1755587317; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=EdzA0t1Rwdo/359oMIkrXU1yMk7yXLkrn4xOvK7DWLY=; b=NzgJkNqnlLPjXQcuUvLfTxdElDeQxHrOYLzd7iXr5D04QH8oosfAL0Ap JtDxHl7TwsYoFN94MWyCkGWfo4FzS0egYeadTZrJbQDLzMyKagHMnKWA1 cxil51Wqj9mm1Bbx2tKW0bCdFwr1s1rgI/i+MWekpw/sIJFzla5RsLjte RhUD3tzUklGBtIuDxnTnumUUI/GSjLg+66ept2GlV/BwSvtod/OxaXW/n X/zz8XOnwTZxiB+U1VI1xUz63nvcNOAkxA2438a1kEoiXwWjPWyMdZo0P DR7AwbYS3Bp2GeQ9xCPTYvU+P6WIo1nfxXah8ezmnUlzGGE/bDZOliFXr Q==; X-CSE-ConnectionGUID: uc7N6mdpRU63Tr3d2Rg4aA== X-CSE-MsgGUID: BNCoVUyTSveVv98kzXWlPA== X-IronPort-AV: E=McAfee;i="6700,10204,11168"; a="33697334" X-IronPort-AV: E=Sophos;i="6.10,158,1719903600"; d="scan'208";a="33697334" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2024 00:08:36 -0700 X-CSE-ConnectionGUID: nhr+42U5TkOFqWlcTtDISQ== X-CSE-MsgGUID: wQYjRlVeQd2Kz/IjrB6etA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,158,1719903600"; d="scan'208";a="60273931" Received: from black.fi.intel.com ([10.237.72.28]) by orviesa009.jf.intel.com with ESMTP; 19 Aug 2024 00:08:32 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 3DE4D330; Mon, 19 Aug 2024 10:08:30 +0300 (EEST) From: "Kirill A. Shutemov" To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , "Rafael J. Wysocki" , Andy Lutomirski , Peter Zijlstra , Baoquan He Cc: Ard Biesheuvel , Tom Lendacky , Andrew Morton , Thomas Zimmermann , Sean Christopherson , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv3 0/4] x86: Reduce code duplication on page table initialization Date: Mon, 19 Aug 2024 10:08:23 +0300 Message-ID: <20240819070827.3620020-1-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Use kernel_ident_mapping_init() to initialize kernel page tables where possible, replacing manual initialization, reducing code duplication. v3: - Reviewed-bys from Tom; - Improve commit messages; v2: - A separate patch to change what PA is mapped at relocate_kernel() VA. - Improve commit messages; - Add Reveiwed-by from Kai; Kirill A. Shutemov (4): x86/mm/ident_map: Fix virtual address wrap to zero x86/acpi: Replace manual page table initialization with kernel_ident_mapping_init() x86/64/kexec: Map original relocate_kernel() in init_transition_pgtable() x86/64/kexec: Rewrite init_transition_pgtable() with kernel_ident_mapping_init() arch/x86/include/asm/kexec.h | 5 +- arch/x86/kernel/acpi/madt_wakeup.c | 73 +++++------------------- arch/x86/kernel/machine_kexec_64.c | 89 +++++++++++------------------- arch/x86/mm/ident_map.c | 14 +---- 4 files changed, 50 insertions(+), 131 deletions(-)