From patchwork Thu Oct 3 21:24:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Edgecombe, Rick P" X-Patchwork-Id: 11173437 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1471D15AB for ; Thu, 3 Oct 2019 21:39:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DF644215EA for ; Thu, 3 Oct 2019 21:39:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DF644215EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 769FA8E000F; Thu, 3 Oct 2019 17:39:06 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 6F3158E000D; Thu, 3 Oct 2019 17:39:06 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 544D18E000F; Thu, 3 Oct 2019 17:39:06 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 183698E000D for ; Thu, 3 Oct 2019 17:39:06 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id 96351181AC9AE for ; Thu, 3 Oct 2019 21:39:05 +0000 (UTC) X-FDA: 76003789050.30.north85_6c6c4845a2a33 X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,rick.p.edgecombe@intel.com,:kvm@vger.kernel.org:linux-kernel@vger.kernel.org:x86@kernel.org::luto@kernel.org:peterz@infradead.org:dave.hansen@intel.com:pbonzini@redhat.com:sean.j.christopherson@intel.com:keescook@chromium.org:kristen@linux.intel.com:deneen.t.dock@intel.com:rick.p.edgecombe@intel.com,RULES_HIT:30006:30041:30054:30064,0,RBL:134.134.136.20:@intel.com:.lbl8.mailshell.net-62.50.0.100 64.95.201.95,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:ft,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:2,LUA_SUMMARY:none X-HE-Tag: north85_6c6c4845a2a33 X-Filterd-Recvd-Size: 2468 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by imf15.hostedemail.com (Postfix) with ESMTP for ; Thu, 3 Oct 2019 21:39:04 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Oct 2019 14:38:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,253,1566889200"; d="scan'208";a="186051650" Received: from linksys13920.jf.intel.com (HELO rpedgeco-DESK5.jf.intel.com) ([10.54.75.11]) by orsmga008.jf.intel.com with ESMTP; 03 Oct 2019 14:38:58 -0700 From: Rick Edgecombe To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org, luto@kernel.org, peterz@infradead.org, dave.hansen@intel.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, keescook@chromium.org Cc: kristen@linux.intel.com, deneen.t.dock@intel.com, Rick Edgecombe Subject: [RFC PATCH 13/13] x86/Kconfig: Add Kconfig for KVM based XO Date: Thu, 3 Oct 2019 14:24:00 -0700 Message-Id: <20191003212400.31130-14-rick.p.edgecombe@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191003212400.31130-1-rick.p.edgecombe@intel.com> References: <20191003212400.31130-1-rick.p.edgecombe@intel.com> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add CONFIG_KVM_XO for supporting KVM based execute only memory. Signed-off-by: Rick Edgecombe --- arch/x86/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 222855cc0158..3a3af2a456e8 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -802,6 +802,19 @@ config KVM_GUEST underlying device model, the host provides the guest with timing infrastructure such as time of day, and system time +config KVM_XO + bool "Support for KVM based execute only virtual memory permissions" + select DYNAMIC_PHYSICAL_MASK + select SPARSEMEM_VMEMMAP + depends on KVM_GUEST && X86_64 + default y + help + This option enables support for execute only memory for KVM guests. If + support from the underlying VMM is not detected at boot, this + capability will automatically disable. + + If you are unsure how to answer this question, answer Y. + config PVH bool "Support for running PVH guests" ---help---