[PATCH v3 15/20] docs: move protection-keys.rst to the core-api book

[Mauro Carvalho Chehab]

This document is used by multiple architectures:

        $ echo $(git grep -l  pkey_mprotect arch|cut -d'/' -f 2|sort|uniq)
        alpha arm arm64 ia64 m68k microblaze mips parisc powerpc s390 sh sparc 
x86 xtensa

So, let's move it to the core book and adjust the links to it
accordingly.

Signed-off-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
---
 Documentation/core-api/index.rst                    | 1 +
 Documentation/{x86 => core-api}/protection-keys.rst | 0
 Documentation/x86/index.rst                         | 1 -
 arch/powerpc/Kconfig                                | 2 +-
 arch/x86/Kconfig                                    | 2 +-
 tools/testing/selftests/x86/protection_keys.c       | 2 +-
 6 files changed, 4 insertions(+), 4 deletions(-)
 rename Documentation/{x86 => core-api}/protection-keys.rst (100%)

diff --git a/Documentation/core-api/index.rst b/Documentation/core-api/index.rst
index ee1bb8983a88..2466a4c51031 100644
--- a/Documentation/core-api/index.rst
+++ b/Documentation/core-api/index.rst
@@ -34,6 +34,7 @@ Core utilities
    timekeeping
    boot-time-mm
    memory-hotplug
+   protection-keys
 
 
 Interfaces for kernel debugging
diff --git a/Documentation/x86/protection-keys.rst 
b/Documentation/core-api/protection-keys.rst
similarity index 100%
rename from Documentation/x86/protection-keys.rst
rename to Documentation/core-api/protection-keys.rst
diff --git a/Documentation/x86/index.rst b/Documentation/x86/index.rst
index ae36fc5fc649..f2de1b2d3ac7 100644
--- a/Documentation/x86/index.rst
+++ b/Documentation/x86/index.rst
@@ -19,7 +19,6 @@ x86-specific Documentation
    tlb
    mtrr
    pat
-   protection-keys
    intel_mpx
    amd-memory-encryption
    pti
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 8c1c636308c8..3b795a0cab62 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -898,7 +898,7 @@ config PPC_MEM_KEYS
          page-based protections, but without requiring modification of the
          page tables when an application changes protection domains.
 
-         For details, see Documentation/vm/protection-keys.rst
+         For details, see Documentation/core-api/protection-keys.rst
 
          If unsure, say y.
 
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2bbbd4d1ba31..d87d53fcd261 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1911,7 +1911,7 @@ config X86_INTEL_MEMORY_PROTECTION_KEYS
          page-based protections, but without requiring modification of the
          page tables when an application changes protection domains.
 
-         For details, see Documentation/x86/protection-keys.txt
+         For details, see Documentation/core-api/protection-keys.rst
 
          If unsure, say y.
 
diff --git a/tools/testing/selftests/x86/protection_keys.c 
b/tools/testing/selftests/x86/protection_keys.c
index 5d546dcdbc80..480995bceefa 100644
--- a/tools/testing/selftests/x86/protection_keys.c
+++ b/tools/testing/selftests/x86/protection_keys.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Tests x86 Memory Protection Keys (see Documentation/x86/protection-keys.txt)
+ * Tests x86 Memory Protection Keys (see 
Documentation/core-api/protection-keys.rst)
  *
  * There are examples in here of:
  *  * how to set protection keys on memory
-- 
2.21.0