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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 1F2BE180024 X-Stat-Signature: juofxzinmmfgchdc7sa4un5gxjrkow3e X-HE-Tag: 1721127761-15401 X-HE-Meta: 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 Wj30UCTK fNcNg048q0sYuFDHbWoaDs+sGHr+ge4c/L4PEbc1NE3PT09SCf4ETpaLHASK14KnibMXZRMGqoJ/BWZinn0NjTb4WyXEbWDeQ6WRUtUe3B/hg4kzUPglvT1zHiQnrBFc+iUnt7LYan00OAvyM11flvpjWu6XJ9t6o9JR5j4NDelMCeX+nh2GSv1g47w1E6JDWQzic0bFINUZ3Qc841NCC0YbDkR272UdvpBNSrI+2qP9DKawQgpxdR28JMMvcnID8Pzp15RVJ+QXTlY0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 5/3/24 18:31, Joey Gouly wrote: > Now that support for POE and Protection Keys has been implemented, add a > config to allow users to actually enable it. > > Signed-off-by: Joey Gouly > Cc: Catalin Marinas > Cc: Will Deacon Reviewed-by: Anshuman Khandual > --- > arch/arm64/Kconfig | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 7b11c98b3e84..676ebe4bf9eb 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -2095,6 +2095,28 @@ config ARM64_EPAN > if the cpu does not implement the feature. > endmenu # "ARMv8.7 architectural features" > > +menu "ARMv8.9 architectural features" Agree with Kevin regarding need for an empty line here. > +config ARM64_POE > + prompt "Permission Overlay Extension" > + def_bool y > + select ARCH_USES_HIGH_VMA_FLAGS > + select ARCH_HAS_PKEYS > + help > + The Permission Overlay Extension is used to implement Memory > + Protection Keys. Memory Protection Keys provides a mechanism for > + enforcing page-based protections, but without requiring modification > + of the page tables when an application changes protection domains. > + > + For details, see Documentation/core-api/protection-keys.rst > + > + If unsure, say y. > + > +config ARCH_PKEY_BITS > + int > + default 3 > + > +endmenu # "ARMv8.9 architectural features" > + > config ARM64_SVE > bool "ARM Scalable Vector Extension support" > default y