From nobody Fri Sep 5 10:38:45 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D12CCEB64DC for ; Tue, 18 Jul 2023 14:00:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233128AbjGROAp (ORCPT ); Tue, 18 Jul 2023 10:00:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233070AbjGROAh (ORCPT ); Tue, 18 Jul 2023 10:00:37 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9C671BE4; Tue, 18 Jul 2023 07:00:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689688810; x=1721224810; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=LDXkVCSBwyltuNYKnmnknvsRCJGauTD4XIMPmA3/KsU=; b=HCmzmvnBFUZemQgVqopA8Gy5wiSiRGGyHMpYZrwpaf+h7Old2Br055q3 VhWoZsSl+IPuHJnOr5m1PyZIC9P/KUSsloRI+kK3zJqPqqL1sEsqVLKtj gvr+V2EKts8SrL1DAt6WvDz0fPFy+vAhLg9b5lP7HMouNJ6lN52oL93fa uD5UwmjdJq6E5JdW7x0lxO/FY6qy7BtmGcbc4cREAsPprsQB4XtoGJTDx v/zyBq81z6EsQNJYoPgEvYD/ob8wc12JrauTxebdE3VcSdY6QRq5uNlIs HtjPWr2OvqMV5T1od2NBwl+HgN7LlQUEgx5A0CcvACLh65ULO+4W976Lv g==; X-IronPort-AV: E=McAfee;i="6600,9927,10775"; a="363676126" X-IronPort-AV: E=Sophos;i="6.01,214,1684825200"; d="scan'208";a="363676126" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jul 2023 06:58:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10775"; a="1054291147" X-IronPort-AV: E=Sophos;i="6.01,214,1684825200"; d="scan'208";a="1054291147" Received: from arthur-vostro-3668.sh.intel.com ([10.238.200.123]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jul 2023 06:58:49 -0700 From: Zeng Guang To: Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , H Peter Anvin , kvm@vger.kernel.org Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Binbin Wu , Zeng Guang Subject: [PATCH v2 4/8] KVM: x86: Add X86EMUL_F_INVTLB and pass it in em_invlpg() Date: Tue, 18 Jul 2023 21:18:40 +0800 Message-Id: <20230718131844.5706-5-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230718131844.5706-1-guang.zeng@intel.com> References: <20230718131844.5706-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Binbin Wu Add an emulation flag X86EMUL_F_INVTLB, which is used to identify an instruction that does TLB invalidation without true memory access. Only invlpg & invlpga implemented in emulator belong to this kind. invlpga doesn't need additional information for emulation. Just pass the flag to em_invlpg(). Signed-off-by: Binbin Wu Signed-off-by: Zeng Guang --- arch/x86/kvm/emulate.c | 4 +++- arch/x86/kvm/kvm_emulate.h | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 8e706d19ae45..9b4b3ce6d52a 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3443,8 +3443,10 @@ static int em_invlpg(struct x86_emulate_ctxt *ctxt) { int rc; ulong linear; + unsigned max_size; =20 - rc =3D linearize(ctxt, ctxt->src.addr.mem, 1, false, &linear); + rc =3D __linearize(ctxt, ctxt->src.addr.mem, &max_size, 1, ctxt->mode, + &linear, X86EMUL_F_INVTLB); if (rc =3D=3D X86EMUL_CONTINUE) ctxt->ops->invlpg(ctxt, linear); /* Disable writeback. */ diff --git a/arch/x86/kvm/kvm_emulate.h b/arch/x86/kvm/kvm_emulate.h index c0e48f4fa7c4..c944055091e1 100644 --- a/arch/x86/kvm/kvm_emulate.h +++ b/arch/x86/kvm/kvm_emulate.h @@ -93,6 +93,7 @@ struct x86_instruction_info { #define X86EMUL_F_FETCH BIT(1) #define X86EMUL_F_BRANCH BIT(2) #define X86EMUL_F_IMPLICIT BIT(3) +#define X86EMUL_F_INVTLB BIT(4) =20 struct x86_emulate_ops { void (*vm_bugged)(struct x86_emulate_ctxt *ctxt); --=20 2.27.0