From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 1FA3814A0A4 for ; Wed, 3 Apr 2024 15:35:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712158511; cv=none; b=ax7yLRzrxbfzYWov4SBBXVwDUSPdRRQ10w5pKHhmWqiDrbPnN50YnzsNkG3ZQb1A1U8laTF+wb5BwCblsSiJegKBpOKl1ZhcLWmdeo55cV6A85F2pNsRthcIiNYLdZ3iaREqL8NCrPQTRu5jOC7+8LX/Nqc6MHO4nsOocLNqN00= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712158511; c=relaxed/simple; bh=/i+d9yJal5XQJcEJTQYG4lJkPTbxJBfam9byO42rSJ0=; h=Subject:To:Cc:From:Date:Message-Id; b=eM03i2fsPcqraGuCtjQvJmF6OTlNvc3/o5+SowauuXvhNbir9gW27M33XoCWN8wZfpy7aqTnca9u6vH7OGYxDa/R17T838dCgsmpxATDVpdOurKeVh0RopJPFsrzQi5YafVIHgQmSMZeb+ofbq5HC78tSEftJnwHlyQA+YfYBO8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=DNgn1IZs; arc=none smtp.client-ip=192.198.163.19 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.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="DNgn1IZs" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1712158510; x=1743694510; h=subject:to:cc:from:date:message-id; bh=/i+d9yJal5XQJcEJTQYG4lJkPTbxJBfam9byO42rSJ0=; b=DNgn1IZs5fJ/UvHXY7SCBbybhRUIV8zKR7AwQUdLW9+64WO+EynntOSu k/PXasO7YKXgfvpncab4HoHSJKV3EWkc6ldGIKfO7IsFAQuQyBevZvW1N hMCJWTQhyq5vV8LRsU4n+CbBSgG388o3EcxSZdwLpjf5mq28tNQELEQi4 HzkOa/Pt7iDQ6r9bPNQUu4YiJWQ8ofHq8ZyzT0Wtwbv3D69tOseb+1e4s CVBFgHG+l6b/RMccKUuMEnxLI/nAnUmHiM8lzhLaz46RdiMyy3X9fcjK6 5yh9t28Wm9uI42i8TAkW0PX+VlaSOAeaMvAu0SXSYpeyLBaAD3wxdCFyU Q==; X-CSE-ConnectionGUID: sBN5kF6DR7aebQ8aaYJJ7A== X-CSE-MsgGUID: RnEzI5z0SBCjGxEfsmqpnw== X-IronPort-AV: E=McAfee;i="6600,9927,11033"; a="7269793" X-IronPort-AV: E=Sophos;i="6.07,177,1708416000"; d="scan'208";a="7269793" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Apr 2024 08:35:09 -0700 X-CSE-ConnectionGUID: hpxrqCOQTpaM3+YSc7ypWg== X-CSE-MsgGUID: offDVKTKTqmAC1UcREHawg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,177,1708416000"; d="scan'208";a="41637975" Received: from davehans-spike.ostc.intel.com (HELO localhost.localdomain) ([10.165.164.11]) by fmviesa002.fm.intel.com with ESMTP; 03 Apr 2024 08:35:08 -0700 Subject: [PATCH 0/4] [v2] x86: Add CPUID region helper and clarify Xen startup To: linux-kernel@vger.kernel.org Cc: jgross@suse.com,tglx@linutronix.de,x86@kernel.org,bp@alien8.de,Dave Hansen From: Dave Hansen Date: Wed, 03 Apr 2024 08:35:08 -0700 Message-Id: <20240403153508.7328E749@davehans-spike.ostc.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Changes from v1: - Typos and whitepace damage noted by Ingo. -- This peels off a patches from the top of another longer series where Borislav suggested actually fixing a problem rather than complaining about it: https://lore.kernel.org/all/20240307162752.GAZenrCDqs0lMTjmu1@fat_crate.local/ There's a little detour here to explain some mysterious (to me) CPUID prodding. The end result gets rid of some fragile Xen boot code. It also clears the way for a future series to bring some order to the early boot code and remove some of the random tinkering that is there today.