| Message ID | be6be3d433a6cd5737e2d4ebb3494fcc99672df4.1653993431.git.bertrand.marquis@arm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Spectre BHB follow up | expand |
Hi Bertrand, On 31/05/2022 11:43, Bertrand Marquis wrote: > 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> Cheers,
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig index ecfa6822e4..c9a4e40e9b 100644 --- a/xen/arch/arm/Kconfig +++ b/xen/arch/arm/Kconfig @@ -97,6 +97,34 @@ 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
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> --- Change in v2: - patch introduced --- xen/arch/arm/Kconfig | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)