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). The PKRU register is XSAVE-managed state CPUID.D.0.EAX[9], the size of XSAVE state component for PKRU is 8 bytes, the offset is 0xa80. 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 (3): qemu, pkeys: add pkeys support for qemu cpuid handling qemu, pkeys: add pkeys support for qemu xsave state handling qemu, pkeys: add pkeys support for qemu migration target-i386/cpu.c | 23 ++++++++++++++++++++++- target-i386/cpu.h | 7 +++++++ target-i386/kvm.c | 3 +++ target-i386/machine.c | 23 +++++++++++++++++++++++ 4 files changed, 55 insertions(+), 1 deletion(-) -- 2.4.3 -- 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
