[RFC PATCH 6/7] security: enable system call isolation in kernel config

From: Mike Rapoport <rppt@linux.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: Alexandre Chartre <alexandre.chartre@oracle.com>,
	Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
	James Bottomley <James.Bottomley@hansenpartnership.com>,
	Jonathan Adams <jwadams@google.com>,
	Kees Cook <keescook@chromium.org>, Paul Turner <pjt@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-mm@kvack.org, linux-security-module@vger.kernel.org,
	x86@kernel.org, Mike Rapoport <rppt@linux.ibm.com>
Subject: [RFC PATCH 6/7] security: enable system call isolation in kernel config
Date: Fri, 26 Apr 2019 00:45:53 +0300	[thread overview]
Message-ID: <1556228754-12996-7-git-send-email-rppt@linux.ibm.com> (raw)
In-Reply-To: <1556228754-12996-1-git-send-email-rppt@linux.ibm.com>

Add SYSCALL_ISOLATION Kconfig option to enable build of SCI infrastructure.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
---
 security/Kconfig | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/security/Kconfig b/security/Kconfig
index e4fe2f3..0c6929a 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -65,6 +65,16 @@ config PAGE_TABLE_ISOLATION
 
 	  See Documentation/x86/pti.txt for more details.
 
+config SYSCALL_ISOLATION
+	bool "System call isolation"
+	default n
+	depends on PAGE_TABLE_ISOLATION && !X86_PAE
+	help
+	  This is an experimental feature to allow executing system
+	  calls in an isolated address space.
+
+	  If you are unsure how to answer this question, answer N.
+
 config SECURITY_INFINIBAND
 	bool "Infiniband Security Hooks"
 	depends on SECURITY && INFINIBAND
-- 
2.7.4

