[Xen-changelog] [xen staging] xen/arm: Kconfig: Move HARDEN_BRANCH_PREDICTOR under "Architecture features"

[patchbot@xxxxxxx]

commit 54cf710d74720a94b9d9a7e58abbe2831e70a37b
Author:     Julien Grall <julien.grall@xxxxxxx>
AuthorDate: Tue Jun 12 12:36:41 2018 +0100
Commit:     Julien Grall <julien.grall@xxxxxxx>
CommitDate: Fri Jun 22 02:59:43 2018 +0100

    xen/arm: Kconfig: Move HARDEN_BRANCH_PREDICTOR under "Architecture features"
    
    At the moment, HARDEN_BRANCH_PREDICTOR is not in any section making
    impossible for the user to unselect it.
    
    Also, it looks like we require to use 'expert = "y"' for showing the
    option in expert mode.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/arch/arm/Kconfig | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 2cbe9dd43b..06ba4a4d6e 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -81,6 +81,23 @@ config ARM_SSBD
 
          If unsure, say Y.
 
+config HARDEN_BRANCH_PREDICTOR
+       bool "Harden the branch predictor against aliasing attacks" if EXPERT = 
"y"
+       default y
+       help
+         Speculation attacks against some high-performance processors rely on
+         being able to manipulate the branch predictor for a victim context by
+         executing aliasing branches in the attacker context.  Such attacks
+         can be partially mitigated against by clearing internal branch
+         predictor state and limiting the prediction logic in some situations.
+
+         This config option will take CPU-specific actions to harden the
+         branch predictor against aliasing attacks and may rely on specific
+         instruction sequences or control bits being set by the system
+         firmware.
+
+         If unsure, say Y.
+
 endmenu
 
 menu "ARM errata workaround via the alternative framework"
@@ -195,23 +212,6 @@ config ARM64_ERRATUM_834220
 
 endmenu
 
-config HARDEN_BRANCH_PREDICTOR
-       bool "Harden the branch predictor against aliasing attacks" if EXPERT
-       default y
-       help
-         Speculation attacks against some high-performance processors rely on
-         being able to manipulate the branch predictor for a victim context by
-         executing aliasing branches in the attacker context.  Such attacks
-         can be partially mitigated against by clearing internal branch
-         predictor state and limiting the prediction logic in some situations.
-
-         This config option will take CPU-specific actions to harden the
-         branch predictor against aliasing attacks and may rely on specific
-         instruction sequences or control bits being set by the system
-         firmware.
-
-         If unsure, say Y.
-
 config ARM64_HARDEN_BRANCH_PREDICTOR
     def_bool y if ARM_64 && HARDEN_BRANCH_PREDICTOR
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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