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From: Rick Edgecombe <rick.p.edgecombe@intel.com>
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 <rick.p.edgecombe@intel.com>
Subject: [RFC PATCH 13/13] x86/Kconfig: Add Kconfig for KVM based XO
Date: Thu,  3 Oct 2019 14:24:00 -0700	[thread overview]
Message-ID: <20191003212400.31130-14-rick.p.edgecombe@intel.com> (raw)
In-Reply-To: <20191003212400.31130-1-rick.p.edgecombe@intel.com>

Add CONFIG_KVM_XO for supporting KVM based execute only memory.

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
---
 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---
-- 
2.17.1


  parent reply	other threads:[~2019-10-03 21:39 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-03 21:23 [RFC PATCH 00/13] XOM for KVM guest userspace Rick Edgecombe
2019-10-03 21:23 ` [RFC PATCH 01/13] kvm: Enable MTRR to work with GFNs with perm bits Rick Edgecombe
2019-10-14  6:47   ` Yu Zhang
2019-10-14 18:44     ` Edgecombe, Rick P
2019-10-03 21:23 ` [RFC PATCH 02/13] kvm: Add support for X86_FEATURE_KVM_XO Rick Edgecombe
2019-10-03 21:23 ` [RFC PATCH 03/13] kvm: Add XO memslot type Rick Edgecombe
2019-10-04  7:27   ` Paolo Bonzini
2019-10-04 19:06     ` Edgecombe, Rick P
2019-10-06 16:15       ` Paolo Bonzini
2019-10-03 21:23 ` [RFC PATCH 04/13] kvm, vmx: Add support for gva exit qualification Rick Edgecombe
2019-10-03 21:23 ` [RFC PATCH 05/13] kvm: Add #PF injection for KVM XO Rick Edgecombe
2019-10-04  7:42   ` Paolo Bonzini
2019-10-04 19:11     ` Edgecombe, Rick P
2019-10-03 21:23 ` [RFC PATCH 06/13] kvm: Add KVM_CAP_EXECONLY_MEM Rick Edgecombe
2019-10-04  7:24   ` Paolo Bonzini
2019-10-04 19:11     ` Edgecombe, Rick P
2019-10-03 21:23 ` [RFC PATCH 07/13] kvm: Add docs for KVM_CAP_EXECONLY_MEM Rick Edgecombe
2019-10-03 21:23 ` [RFC PATCH 08/13] x86/boot: Rename USE_EARLY_PGTABLE_L5 Rick Edgecombe
2019-10-03 21:23 ` [RFC PATCH 09/13] x86/cpufeature: Add detection of KVM XO Rick Edgecombe
2019-10-29 23:33   ` Kees Cook
2019-10-29 23:52     ` Edgecombe, Rick P
2019-10-30 14:55       ` Sean Christopherson
2019-10-30 21:02         ` Edgecombe, Rick P
2019-10-03 21:23 ` [RFC PATCH 10/13] x86/mm: Add NR page bit for " Rick Edgecombe
2019-10-04  7:33   ` Paolo Bonzini
2019-10-03 21:23 ` [RFC PATCH 11/13] x86, ptdump: Add NR bit to page table dump Rick Edgecombe
2019-10-03 21:23 ` [RFC PATCH 12/13] mmap: Add XO support for KVM XO Rick Edgecombe
2019-10-04  7:34   ` Paolo Bonzini
2019-10-04 19:12     ` Edgecombe, Rick P
2019-10-03 21:24 ` Rick Edgecombe [this message]
2019-10-29 23:36   ` [RFC PATCH 13/13] x86/Kconfig: Add Kconfig for KVM based XO Kees Cook
2019-10-30  0:01     ` Edgecombe, Rick P
2019-10-30 18:36       ` Kees Cook
2019-10-04  7:22 ` [RFC PATCH 00/13] XOM for KVM guest userspace Paolo Bonzini
2019-10-04 19:03   ` Edgecombe, Rick P
2019-10-04 14:56 ` Andy Lutomirski
2019-10-04 14:56   ` Andy Lutomirski
2019-10-04 20:09   ` Edgecombe, Rick P
2019-10-05  1:33     ` Andy Lutomirski
2019-10-05  1:33       ` Andy Lutomirski
2019-10-07 18:14       ` Edgecombe, Rick P
2019-10-29 23:40 ` Kees Cook
2019-10-30  0:27   ` Edgecombe, Rick P

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