From patchwork Fri Jun 25 23:25:08 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 108182 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.4/8.14.3) with ESMTP id o5PNPpY7001628 for ; Fri, 25 Jun 2010 23:25:51 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756828Ab0FYXZs (ORCPT ); Fri, 25 Jun 2010 19:25:48 -0400 Received: from cantor.suse.de ([195.135.220.2]:41351 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755742Ab0FYXZR (ORCPT ); Fri, 25 Jun 2010 19:25:17 -0400 Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.221.2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.suse.de (Postfix) with ESMTP id 393DF94033; Sat, 26 Jun 2010 01:25:15 +0200 (CEST) From: Alexander Graf To: kvm-ppc@vger.kernel.org Cc: KVM list , linuxppc-dev Subject: [PATCH 20/26] KVM: PPC: PV tlbsync to nop Date: Sat, 26 Jun 2010 01:25:08 +0200 Message-Id: <1277508314-915-21-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.6.0.2 In-Reply-To: <1277508314-915-1-git-send-email-agraf@suse.de> References: <1277508314-915-1-git-send-email-agraf@suse.de> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 25 Jun 2010 23:25:51 +0000 (UTC) diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c index b165b20..b091f94 100644 --- a/arch/powerpc/kernel/kvm.c +++ b/arch/powerpc/kernel/kvm.c @@ -61,6 +61,8 @@ #define KVM_INST_MTSPR_DAR 0x7c1303a6 #define KVM_INST_MTSPR_DSISR 0x7c1203a6 +#define KVM_INST_TLBSYNC 0x7c00046c + static bool kvm_patching_worked = true; static void kvm_patch_ins_ld(u32 *inst, long addr, u32 rt) @@ -91,6 +93,11 @@ static void kvm_patch_ins_stw(u32 *inst, long addr, u32 rt) *inst = KVM_INST_STW | rt | (addr & 0x0000fffc); } +static void kvm_patch_ins_nop(u32 *inst) +{ + *inst = KVM_INST_NOP; +} + static void kvm_map_magic_page(void *data) { kvm_hypercall2(KVM_HC_PPC_MAP_MAGIC_PAGE, @@ -159,6 +166,11 @@ static void kvm_check_ins(u32 *inst) case KVM_INST_MTSPR_DSISR: kvm_patch_ins_stw(inst, magic_var(dsisr), inst_rt); break; + + /* Nops */ + case KVM_INST_TLBSYNC: + kvm_patch_ins_nop(inst); + break; } switch (_inst) {