From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D6C02C433E2 for ; Thu, 10 Sep 2020 09:23:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A29421556 for ; Thu, 10 Sep 2020 09:23:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="jxugAxJZ"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="PtJZyPTe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730233AbgIJJXm (ORCPT ); Thu, 10 Sep 2020 05:23:42 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:38770 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730269AbgIJJWT (ORCPT ); Thu, 10 Sep 2020 05:22:19 -0400 Date: Thu, 10 Sep 2020 09:22:09 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1599729729; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Y1AUgNSiQy8jDCztLpQfApwLLEWCSFdLJ5/aNdjzixU=; b=jxugAxJZtD61kUFg7C0fRxe+FEIlOlXPms0dzC7Qs2n5lT5lq0ODQiePieldLBzvSplYBx 5TYy7AtQjI4k+dNQAPuOsdV853Fj65A3JGSvbgctot8x3Z9etNEJxfTStnnLehWy64Yf8s nw1NPAlSHI87cYgy51YI5T/rus/up09J/zKJz4pd2B7Nm0EWUmxV0zNogX7Hsho94eHf99 VnYf2kWZOv6h5D/h4w00tyIaVHCbDH9biYuUnAnFdOcco9U3nZTl40GmtOYjzpxSlokO3p /5YUvyv8WuFQUgKxdRv3HLoWiM2yyMFFtjetgdHouwr3JSCVkaN5zWhlpDSzmw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1599729729; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Y1AUgNSiQy8jDCztLpQfApwLLEWCSFdLJ5/aNdjzixU=; b=PtJZyPTe6zl6tdbLJd7b/9CkGF34Tb0DnY5BHrjOsiAKeuar8toLT40uc1dByj8hlQ6Jga 5FJAaUfPmfREXyBw== From: "tip-bot2 for Tom Lendacky" Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/seves] x86/sev-es: Handle RDPMC Events Cc: Tom Lendacky , Joerg Roedel , Borislav Petkov , x86 , LKML In-Reply-To: <20200907131613.12703-56-joro@8bytes.org> References: <20200907131613.12703-56-joro@8bytes.org> MIME-Version: 1.0 Message-ID: <159972972929.20229.2332220384218041484.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/seves branch of tip: Commit-ID: 5d55cf78a8785a7496919462f3d1a4689f62fb1d Gitweb: https://git.kernel.org/tip/5d55cf78a8785a7496919462f3d1a4689f62fb1d Author: Tom Lendacky AuthorDate: Mon, 07 Sep 2020 15:15:56 +02:00 Committer: Borislav Petkov CommitterDate: Wed, 09 Sep 2020 11:33:20 +02:00 x86/sev-es: Handle RDPMC Events Implement a handler for #VC exceptions caused by RDPMC instructions. Signed-off-by: Tom Lendacky [ jroedel@suse.de: Adapt to #VC handling infrastructure ] Co-developed-by: Joerg Roedel Signed-off-by: Joerg Roedel Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200907131613.12703-56-joro@8bytes.org --- arch/x86/kernel/sev-es.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 4d468ec..b2d7287 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -853,6 +853,25 @@ static enum es_result vc_handle_wbinvd(struct ghcb *ghcb, return sev_es_ghcb_hv_call(ghcb, ctxt, SVM_EXIT_WBINVD, 0, 0); } +static enum es_result vc_handle_rdpmc(struct ghcb *ghcb, struct es_em_ctxt *ctxt) +{ + enum es_result ret; + + ghcb_set_rcx(ghcb, ctxt->regs->cx); + + ret = sev_es_ghcb_hv_call(ghcb, ctxt, SVM_EXIT_RDPMC, 0, 0); + if (ret != ES_OK) + return ret; + + if (!(ghcb_rax_is_valid(ghcb) && ghcb_rdx_is_valid(ghcb))) + return ES_VMM_ERROR; + + ctxt->regs->ax = ghcb->save.rax; + ctxt->regs->dx = ghcb->save.rdx; + + return ES_OK; +} + static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, struct ghcb *ghcb, unsigned long exit_code) @@ -870,6 +889,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, case SVM_EXIT_RDTSCP: result = vc_handle_rdtsc(ghcb, ctxt, exit_code); break; + case SVM_EXIT_RDPMC: + result = vc_handle_rdpmc(ghcb, ctxt); + break; case SVM_EXIT_CPUID: result = vc_handle_cpuid(ghcb, ctxt); break;