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Stefano Stabellini
634cfc8beb
Select MEM_ACCESS_ALWAYS_ON on x86 to mark that MEM_ACCESS is not configurable on x86. Avoid selecting it on ARM. Rename HAS_MEM_ACCESS to MEM_ACCESS everywhere. Add a prompt and a description to MEM_ACCESS in xen/common/Kconfig. The result is that the user-visible option is MEM_ACCESS, and it is configurable only on ARM (disabled by default). At the moment the arch-specific mem_access code remains enabled on ARM, even with MEM_ACCESS=y. The purpose is to reduce code size. The option doesn't depend on EXPERT because it would be nice to ecurity-support configurations without MEM_ACCESS and a non-expert should be able to disable it. Suggested-by: Julien Grall <julien.grall@arm.com> Signed-off-by: Stefano Stabellini <sstabellini@kernel.org> Acked-by: Jan Beulich <jbeulich@suse.com> Acked-by: Julien Grall <julien.grall@arm.com> CC: dgdegra@tycho.nsa.gov CC: andrew.cooper3@citrix.com CC: George.Dunlap@eu.citrix.com CC: ian.jackson@eu.citrix.com CC: jbeulich@suse.com CC: julien.grall@arm.com CC: konrad.wilk@oracle.com CC: sstabellini@kernel.org CC: tim@xen.org CC: wei.liu2@citrix.com --- Changes in v5: - change MEM_ACCESS_ALWAYS_ON to bool - change default for MEM_ACCESS, default y if MEM_ACCESS_ALWAYS_ON Changes in v4: - remove HAS_MEM_ACCESS - move MEM_ACCESS_ALWAYS_ON to common - combile default and bool to def_bool Changes in v3: - keep HAS_MEM_ACCESS to mark that an arch can do MEM_ACCESS - introduce MEM_ACCESS_ALWAYS_ON - the main MEM_ACCESS option is in xen/common/Kconfig Changes in v2: - patch added