From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755326AbbGZX3P (ORCPT ); Sun, 26 Jul 2015 19:29:15 -0400 Received: from mail.kernel.org ([198.145.29.136]:58873 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755033AbbGZX3O (ORCPT ); Sun, 26 Jul 2015 19:29:14 -0400 From: Andy Lutomirski To: X86 ML , "xen-devel@lists.xen.org" , Andrew Cooper Cc: Boris Ostrovsky , "linux-kernel@vger.kernel.org" , Borislav Petkov , Steven Rostedt , Andy Lutomirski Subject: [PATCH 0/2] x86_64, xen: Simplify Xen SYSCALL handling Date: Sun, 26 Jul 2015 16:29:08 -0700 Message-Id: X-Mailer: git-send-email 2.4.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Xen's SYSCALL hooks are overcomplicated and add unnecessary places where RSP is user controlled. Simplify it and get rid of those user RSP code paths under Xen. Tested as an Intel KVM guest. Not tested under Xen or on AMD, both of which are important. Andy Lutomirski (2): x86/entry/64: Rearrange SYSCALL entry points for Xen's benefit x86/xen/64: Rearrange the SYSCALL entries arch/x86/entry/entry_64.S | 29 +++++++++++++++-------------- arch/x86/entry/entry_64_compat.S | 12 +++++++----- arch/x86/xen/xen-asm_64.S | 24 ++++++++++-------------- 3 files changed, 32 insertions(+), 33 deletions(-) -- 2.4.3