Changes in v5: *Add pkru save/restore support before FPU comes into force. *Introduce pkru_mask instead of update_permission_bitmask. *Update cpuid_leafs macro for __do_cpuid_ent. *Thanks for guangrong's comments and directly modification of patches. Changes in v4: *Patch 2 and 4 have rebased on http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/log/?h=mm/pkeys Changes in v3: *Add comments for patch that disable PKU feature without ept. Changes in v2: *Add pku.c for kvm-unit-tests. *Optimize permission_fault codes for patch4. *Delete is_long_mode and PK for patch5. *Squash cpuid and cr4 patches. The protection-key feature provides an additional mechanism by which IA-32e paging controls access to usermode addresses. Hardware support for protection keys for user pages is enumerated with CPUID feature flag CPUID.7.0.ECX[3]:PKU. Software support is CPUID.7.0.ECX[4]:OSPKE with the setting of CR4.PKE(bit 22). When CR4.PKE = 1, every linear address is associated with the 4-bit protection key located in bits 62:59 of the paging-structure entry that mapped the page containing the linear address. The PKRU register determines, for each protection key, whether user-mode addresses with that protection key may be read or written. The PKRU register (protection key rights for user pages) is a 32-bit register with the following format: for each i (0 ≤ i ≤ 15), PKRU[2i] is the access-disable bit for protection key i (ADi); PKRU[2i+1] is the write-disable bit for protection key i (WDi). Software can use the RDPKRU and WRPKRU instructions with ECX = 0 to read and write PKRU. In addition, the PKRU register is XSAVE-managed state and can thus be read and written by instructions in the XSAVE feature set. PFEC.PK (bit 5) is defined as protection key violations. The specification of Protection Keys can be found at SDM (4.6.2, volume 3) http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-manual-325462.pdf. Huaitong Han (6): KVM, pkeys: disable pkeys for guests in non-paging mode KVM, pkeys: add pkeys support for xsave state KVM, pkeys: introduce pkru_mask to cache conditions KVM, pkeys: add pkeys support for permission_fault logic KVM, pkeys: expose CPUID/CR4 to guest KVM, pkeys: disable PKU feature without ept Xiao Guangrong (3): x86: pkey: introduce write_pkru() for KVM KVM, pkeys: save/restore PKRU when guest/host switches Revert "KVM: MMU: precompute page fault error code" arch/x86/include/asm/kvm_host.h | 15 +++++++- arch/x86/include/asm/pgtable.h | 6 +++ arch/x86/include/asm/special_insns.h | 16 ++++++++ arch/x86/kvm/cpuid.c | 39 +++++++++++++++---- arch/x86/kvm/cpuid.h | 8 ++++ arch/x86/kvm/kvm_cache_regs.h | 5 +++ arch/x86/kvm/mmu.c | 73 +++++++++++++++++++++++++++++++++++- arch/x86/kvm/mmu.h | 35 ++++++++++++++--- arch/x86/kvm/paging_tmpl.h | 42 ++++++++++++--------- arch/x86/kvm/svm.c | 8 ++++ arch/x86/kvm/vmx.c | 45 +++++++++++++++++++--- arch/x86/kvm/x86.c | 16 ++++++-- arch/x86/kvm/x86.h | 3 +- 13 files changed, 267 insertions(+), 44 deletions(-) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
