linux-kernel - [PATCH v3 1/6] x86,s390: Move ARCH_HAS_MEM

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Message-Id: <20190718032858.28744-2-bauerman@linux.ibm.com>
Date:   Thu, 18 Jul 2019 00:28:53 -0300
From:   Thiago Jung Bauermann <bauerman@...ux.ibm.com>
To:     x86@...nel.org
Cc:     iommu@...ts.linux-foundation.org, linux-fsdevel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Thomas Lendacky <Thomas.Lendacky@....com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        Mike Anderson <andmike@...ux.ibm.com>,
        Ram Pai <linuxram@...ibm.com>,
        Thiago Jung Bauermann <bauerman@...ux.ibm.com>
Subject: [PATCH v3 1/6] x86,s390: Move ARCH_HAS_MEM_ENCRYPT definition to arch/Kconfig

powerpc is also going to use this feature, so put it in a generic location.

Signed-off-by: Thiago Jung Bauermann <bauerman@...ux.ibm.com>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Christoph Hellwig <hch@....de>
---
 arch/Kconfig      | 3 +++
 arch/s390/Kconfig | 4 +---
 arch/x86/Kconfig  | 4 +---
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index e8d19c3cb91f..8fc285180848 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -935,6 +935,9 @@ config LOCK_EVENT_COUNTS
 	  the chance of application behavior change because of timing
 	  differences. The counts are reported via debugfs.
 
+config ARCH_HAS_MEM_ENCRYPT
+	bool
+
 source "kernel/gcov/Kconfig"
 
 source "scripts/gcc-plugins/Kconfig"
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index a4ad2733eedf..f43319c44454 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -1,7 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
-config ARCH_HAS_MEM_ENCRYPT
-        def_bool y
-
 config MMU
 	def_bool y
 
@@ -68,6 +65,7 @@ config S390
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_HAS_GIGANTIC_PAGE
 	select ARCH_HAS_KCOV
+	select ARCH_HAS_MEM_ENCRYPT
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_SET_MEMORY
 	select ARCH_HAS_STRICT_KERNEL_RWX
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c9f331bb538b..5d3295f2df94 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -68,6 +68,7 @@ config X86
 	select ARCH_HAS_FORTIFY_SOURCE
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_HAS_KCOV			if X86_64
+	select ARCH_HAS_MEM_ENCRYPT
 	select ARCH_HAS_MEMBARRIER_SYNC_CORE
 	select ARCH_HAS_PMEM_API		if X86_64
 	select ARCH_HAS_PTE_SPECIAL
@@ -1520,9 +1521,6 @@ config X86_CPA_STATISTICS
 	  helps to determine the effectiveness of preserving large and huge
 	  page mappings when mapping protections are changed.
 
-config ARCH_HAS_MEM_ENCRYPT
-	def_bool y
-
 config AMD_MEM_ENCRYPT
 	bool "AMD Secure Memory Encryption (SME) support"
 	depends on X86_64 && CPU_SUP_AMD