diff mbox series

[v3,4/4] arm: Define kconfig symbols used by arm64 cpufeatures

Message ID e9f3e4c520f9d78223ff89cf1d8ef14348933a7c.1655124548.git.bertrand.marquis@arm.com (mailing list archive)
State New, archived
Headers show
Series Spectre BHB follow up | expand

Commit Message

Bertrand Marquis June 13, 2022, 12:53 p.m. UTC 
Define kconfig symbols which are used by arm64 cpufeatures to prevent
using undefined symbols and rely on IS_ENABLED returning false.
All the features related to those symbols are unsupported by Xen:
- pointer authentication
- sve
- memory tagging
- branch target identification

Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
Acked-by: Julien Grall <jgrall@amazon.com>
---
Changes in v3:
- add Julien acked by
- no changes
Changes in v2:
- patch introduced
---
 xen/arch/arm/Kconfig | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
diff mbox series

Patch

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index a89a67802a..5900aa2efe 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -98,6 +98,34 @@  config HARDEN_BRANCH_PREDICTOR
 
 	  If unsure, say Y.
 
+config ARM64_PTR_AUTH
+	def_bool n
+	depends on ARM64
+	help
+	  Pointer authentication support.
+	  This feature is not supported in Xen.
+
+config ARM64_SVE
+	def_bool n
+	depends on ARM64
+	help
+	  Scalar Vector Extension support.
+	  This feature is not supported in Xen.
+
+config ARM64_MTE
+	def_bool n
+	depends on ARM64
+	help
+	  Memory Tagging Extension support.
+	  This feature is not supported in Xen.
+
+config ARM64_BTI
+	def_bool n
+	depends on ARM64
+	help
+	  Branch Target Identification support.
+	  This feature is not supported in Xen.
+
 config TEE
 	bool "Enable TEE mediators support (UNSUPPORTED)" if UNSUPPORTED
 	default n