From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51184 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932268AbbLGMVX (ORCPT ); Mon, 7 Dec 2015 07:21:23 -0500 Subject: Patch "MIPS: KVM: Fix CACHE immediate offset sign extension" has been added to the 4.3-stable tree To: james.hogan@imgtec.com, gleb@kernel.org, gregkh@linuxfoundation.org, pbonzini@redhat.com, ralf@linux-mips.org Cc: , From: Date: Mon, 07 Dec 2015 00:31:20 -0800 Message-ID: <144947708081229@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled MIPS: KVM: Fix CACHE immediate offset sign extension to the 4.3-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mips-kvm-fix-cache-immediate-offset-sign-extension.patch and it can be found in the queue-4.3 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From c5c2a3b998f1ff5a586f9d37e154070b8d550d17 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Wed, 11 Nov 2015 14:21:19 +0000 Subject: MIPS: KVM: Fix CACHE immediate offset sign extension From: James Hogan commit c5c2a3b998f1ff5a586f9d37e154070b8d550d17 upstream. The immediate field of the CACHE instruction is signed, so ensure that it gets sign extended by casting it to an int16_t rather than just masking the low 16 bits. Fixes: e685c689f3a8 ("KVM/MIPS32: Privileged instruction/target branch emulation.") Signed-off-by: James Hogan Cc: Ralf Baechle Cc: Paolo Bonzini Cc: Gleb Natapov Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini Signed-off-by: Greg Kroah-Hartman --- arch/mips/kvm/emulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/mips/kvm/emulate.c +++ b/arch/mips/kvm/emulate.c @@ -1581,7 +1581,7 @@ enum emulation_result kvm_mips_emulate_c base = (inst >> 21) & 0x1f; op_inst = (inst >> 16) & 0x1f; - offset = inst & 0xffff; + offset = (int16_t)inst; cache = (inst >> 16) & 0x3; op = (inst >> 18) & 0x7; Patches currently in stable-queue which might be from james.hogan@imgtec.com are queue-4.3/mips-kvm-fix-cache-immediate-offset-sign-extension.patch queue-4.3/mips-kvm-fix-asid-restoration-logic.patch queue-4.3/mips-cdmm-add-builtin_mips_cdmm_driver-macro.patch queue-4.3/mips-kvm-uninit-vcpu-in-vcpu_create-error-path.patch