On 5/2/2024 7:27 AM, Sean Christopherson wrote:
On Sun, Feb 18, 2024, Yang Weijiang wrote:Sean Christopherson (4): x86/fpu/xstate: Always preserve non-user xfeatures/flags in __state_perm KVM: x86: Rework cpuid_get_supported_xcr0() to operate on vCPU data KVM: x86: Report XSS as to-be-saved if there are supported features KVM: x86: Load guest FPU state when access XSAVE-managed MSRs Yang Weijiang (23): x86/fpu/xstate: Refine CET user xstate bit enabling x86/fpu/xstate: Add CET supervisor mode state support x86/fpu/xstate: Introduce XFEATURE_MASK_KERNEL_DYNAMIC xfeature set x86/fpu/xstate: Introduce fpu_guest_cfg for guest FPU configuration x86/fpu/xstate: Create guest fpstate with guest specific config x86/fpu/xstate: Warn if kernel dynamic xfeatures detected in normal fpstate KVM: x86: Rename kvm_{g,s}et_msr()* to menifest emulation operations KVM: x86: Refine xsave-managed guest register/MSR reset handling KVM: x86: Add kvm_msr_{read,write}() helpers KVM: x86: Refresh CPUID on write to guest MSR_IA32_XSS KVM: x86: Initialize kvm_caps.supported_xss KVM: x86: Add fault checks for guest CR4.CET setting KVM: x86: Report KVM supported CET MSRs as to-be-saved KVM: VMX: Introduce CET VMCS fields and control bits KVM: x86: Use KVM-governed feature framework to track "SHSTK/IBT enabled" KVM: VMX: Emulate read and write to CET MSRs KVM: x86: Save and reload SSP to/from SMRAM KVM: VMX: Set up interception for CET MSRs KVM: VMX: Set host constant supervisor states to VMCS fields KVM: x86: Enable CET virtualization for VMX and advertise to userspace KVM: nVMX: Introduce new VMX_BASIC bit for event error_code delivery to L1 KVM: nVMX: Enable CET support for nested guest KVM: x86: Don't emulate instructions guarded by CETA decent number of comments, but almost all of them are quite minor. The big open is how to handle save/restore of SSP from userspace. Instead of spinning a full v10, maybe send an RFC for KVM_{G,S}ET_ONE_REG idea?
OK, I'll send an RFC patch after relevant discussion is settled.
That will make it easier to review, and if you delay v11 a bit, I should be able to get various series applied that have minor conflicts/dependencies, e.g. the MSR access and the kvm_host series.
I can wait until the series landed in x86-kvm tree. Appreciated for your review and comments!
