AMD's next generation of EPYC processors support the MPK (Memory Protection Keys) feature. AMD documentation for MPK feature is available at "AMD64 Architecture Programmer’s Manual Volume 2: System Programming, Pub. 24593 Rev. 3.34, Section 5.6.6 Memory Protection Keys (MPK) Bit". The documentation can be obtained at the link below: https://bugzilla.kernel.org/show_bug.cgi?id=206537 This series enables the feature on AMD and updates config parameters to reflect the MPK support on generic x86 platforms. --- v2: - Introduced intermediate config option X86_MEMORY_PROTECTION_KEYS to avoid user propmpts. Kept X86_INTEL_MEMORY_PROTECTION_KEYS as is. Eventually, we will be moving to X86_MEMORY_PROTECTION_KEYS after couple of kernel revisions. - Moved pkru data structures to kvm_vcpu_arch. Moved save/restore pkru to kvm_load_host_xsave_state/kvm_load_guest_xsave_state. v1: https://lore.kernel.org/lkml/158880240546.11615.2219410169137148044.stgit@xxxxxxxxxxxxxxxxxxx/ Babu Moger (3): arch/x86: Rename config X86_INTEL_MEMORY_PROTECTION_KEYS to generic x86 KVM: x86: Move pkru save/restore to x86.c KVM: SVM: Add support for MPK feature on AMD Documentation/core-api/protection-keys.rst | 3 ++- arch/x86/Kconfig | 11 +++++++++-- arch/x86/include/asm/disabled-features.h | 4 ++-- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/include/asm/mmu.h | 2 +- arch/x86/include/asm/mmu_context.h | 4 ++-- arch/x86/include/asm/pgtable.h | 4 ++-- arch/x86/include/asm/pgtable_types.h | 2 +- arch/x86/include/asm/special_insns.h | 2 +- arch/x86/include/uapi/asm/mman.h | 2 +- arch/x86/kernel/cpu/common.c | 2 +- arch/x86/kvm/svm/svm.c | 4 ++++ arch/x86/kvm/vmx/vmx.c | 18 ------------------ arch/x86/kvm/x86.c | 20 ++++++++++++++++++++ arch/x86/mm/Makefile | 2 +- arch/x86/mm/pkeys.c | 2 +- scripts/headers_install.sh | 2 +- tools/arch/x86/include/asm/disabled-features.h | 4 ++-- 18 files changed, 52 insertions(+), 37 deletions(-) --
