From patchwork Thu Aug 22 12:39:56 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: 822380 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (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 BBF3613A244; Thu, 22 Aug 2024 12:40:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724330409; cv=none; b=KE+/fz3z5UFks6C/pqm6BoGdC6r8F3O78xauAPPdmeeoD4ZZzp32K/fUNw8P0o9DvurLXHfSXDBuOMeT+WMYDUQOf6f7sPIWvbIrouHemphXTkR+No17AnZOJVgj1CVXxKNrbyEjlJbtVkCnLZnnzWK+QcNO9wAz/V03MBRFxK4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724330409; c=relaxed/simple; bh=H49+8EkYQypOXjbX3bI2fF++m6LZzdYlbAzkt1huANg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=YNmem+V9ug9KQPfsYOw/6xzMe2nrupfC7LxNnyHTKTXqz4dPXXw/c+CvzU7jJVdDlld7wxMHZxRQaaVry3BFHHOydVGLoZ/ndzMw1I+6MvTnIZZcpCa7BqWZUtEnl9ULYLU5h6o6RpEVy3MxI6CXBMdb5o5PV9aeGHSPItG4N+8= 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=LHp+mZay; arc=none smtp.client-ip=192.198.163.13 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="LHp+mZay" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724330408; x=1755866408; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=H49+8EkYQypOXjbX3bI2fF++m6LZzdYlbAzkt1huANg=; b=LHp+mZayfhmCrXpCIoNVwQdegpdR8C1cy0culveMjRVD/OQl5UsaeuWS Q5/lzOnDCn1c/0xb4cvW10pWh2tGM1EorBQyxWP/oD4Ejak6AzqxPpTFC jUk8lX2Utcowrc6DqP2r1b5aw4fbg8TnYnp84mGPUn+LZkVi4uKahUfdh GwLBFX1NaqLUgxV394CDrJuOBVMoNPaOLqt5+ZFnx8yWUlEKJbozXKesN Wn+pb9h+Uy8S2gZ7CBJPewSFScz/PsRbbeDmwy0hXqvx0AUzDylOm6n9P kRL8azDkv5H8W8ZGc8mrLIWdslx1gYjgJYmVPGrgp0PslGOWJFTlFVvY5 A==; X-CSE-ConnectionGUID: OwaZECJjTLKiCRoGW7NwzQ== X-CSE-MsgGUID: 6TtsYkBYShen19MucoHoYA== X-IronPort-AV: E=McAfee;i="6700,10204,11172"; a="25635640" X-IronPort-AV: E=Sophos;i="6.10,167,1719903600"; d="scan'208";a="25635640" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2024 05:40:07 -0700 X-CSE-ConnectionGUID: CM6RtH2tTViTzBMYCHv5Qg== X-CSE-MsgGUID: Cjd4yENYT0+yWdfUrVS6KA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,167,1719903600"; d="scan'208";a="61443039" Received: from black.fi.intel.com ([10.237.72.28]) by fmviesa008.fm.intel.com with ESMTP; 22 Aug 2024 05:40:03 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 0B1C62F2; Thu, 22 Aug 2024 15:40:01 +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: [PATCHv4 0/4] x86: Reduce code duplication on page table initialization Date: Thu, 22 Aug 2024 15:39:56 +0300 Message-ID: <20240822124000.1171321-1-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. v4: - Reviewed-bys from Kai; - Fix comment in acpi_mp_setup_reset() (Rafael); 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(-)