Hello, > diff --git a/mm/Kconfig b/mm/Kconfig > index b4cb45255a54..45416916dec1 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -1249,6 +1249,12 @@ config IOMMU_MM_DATA > config EXECMEM > bool > > +config ARCH_HAS_USER_SHADOW_STACK > + bool > + help > + The architecture has hardware support for userspace shadow call > + stacks (eg, x87 CET, arm64 GCS or RISC-V Zicfiss). s/x87/x86/ ? -- Thiago