From patchwork Fri Aug 1 09:18:33 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 375617 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id B4C18140119 for ; Fri, 1 Aug 2014 19:19:41 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754494AbaHAJTk (ORCPT ); Fri, 1 Aug 2014 05:19:40 -0400 Received: from cantor2.suse.de ([195.135.220.15]:49851 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754827AbaHAJS5 (ORCPT ); Fri, 1 Aug 2014 05:18:57 -0400 Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id F090375061; Fri, 1 Aug 2014 09:18:36 +0000 (UTC) From: Alexander Graf To: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org Subject: [PULL 62/63] KVM: PPC: HV: Remove generic instruction emulation Date: Fri, 1 Aug 2014 11:18:33 +0200 Message-Id: <1406884714-33099-63-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1406884714-33099-1-git-send-email-agraf@suse.de> References: <1406884714-33099-1-git-send-email-agraf@suse.de> Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org Now that we have properly split load/store instruction emulation and generic instruction emulation, we can move the generic one from kvm.ko to kvm-pr.ko on book3s_64. This reduces the attack surface and amount of code loaded on HV KVM kernels. Signed-off-by: Alexander Graf --- arch/powerpc/kvm/Makefile | 2 +- arch/powerpc/kvm/trace_pr.h | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 1ccd7a1..2d590de 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -48,6 +48,7 @@ kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HANDLER) := \ kvm-pr-y := \ fpu.o \ + emulate.o \ book3s_paired_singles.o \ book3s_pr.o \ book3s_pr_papr.o \ @@ -91,7 +92,6 @@ kvm-book3s_64-module-objs += \ $(KVM)/kvm_main.o \ $(KVM)/eventfd.o \ powerpc.o \ - emulate.o \ emulate_loadstore.o \ book3s.o \ book3s_64_vio.o \ diff --git a/arch/powerpc/kvm/trace_pr.h b/arch/powerpc/kvm/trace_pr.h index e1357cd..a674f09 100644 --- a/arch/powerpc/kvm/trace_pr.h +++ b/arch/powerpc/kvm/trace_pr.h @@ -291,6 +291,26 @@ TRACE_EVENT(kvm_unmap_hva, TP_printk("unmap hva 0x%lx\n", __entry->hva) ); +TRACE_EVENT(kvm_ppc_instr, + TP_PROTO(unsigned int inst, unsigned long _pc, unsigned int emulate), + TP_ARGS(inst, _pc, emulate), + + TP_STRUCT__entry( + __field( unsigned int, inst ) + __field( unsigned long, pc ) + __field( unsigned int, emulate ) + ), + + TP_fast_assign( + __entry->inst = inst; + __entry->pc = _pc; + __entry->emulate = emulate; + ), + + TP_printk("inst %u pc 0x%lx emulate %u\n", + __entry->inst, __entry->pc, __entry->emulate) +); + #endif /* _TRACE_KVM_H */ /* This part must be outside protection */