diff --git a/patches/kernel/9999-rdtsc-spoof-hook.patch b/patches/kernel/9999-rdtsc-spoof-hook.patch new file mode 100644 index 0000000..18db3e3 --- /dev/null +++ b/patches/kernel/9999-rdtsc-spoof-hook.patch @@ -0,0 +1,51 @@ +diff -Naur --no-dereference a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c +--- a/arch/x86/kvm/vmx/vmx.c 2024-07-01 21:03:34.000000000 +0300 ++++ b/arch/x86/kvm/vmx/vmx.c 2024-07-01 20:24:05.000000000 +0300 +@@ -6137,6 +6137,10 @@ + [EXIT_REASON_ENCLS] = handle_encls, + [EXIT_REASON_BUS_LOCK] = handle_bus_lock_vmexit, + [EXIT_REASON_NOTIFY] = handle_notify, ++ [EXIT_REASON_RDTSC] = handle_rdtsc, ++ [EXIT_REASON_RDTSCP] = handle_rdtscp, ++ [EXIT_REASON_UMWAIT] = handle_umwait, ++ [EXIT_REASON_TPAUSE] = handle_tpause, + }; + + static const int kvm_vmx_max_exit_handlers = +@@ -6079,6 +6079,36 @@ + return 1; + } + ++static int handle_rdtsc(struct kvm_vcpu *vcpu) ++{ ++ u64 _rdtsc = rdtsc(); ++ printk_once("[HookEntry] hook entry function handle_rdtsc is working, return the rdtsc() if no hook , you can hook here!\n"); ++ vcpu->arch.regs[VCPU_REGS_RAX] = _rdtsc & -1u; ++ vcpu->arch.regs[VCPU_REGS_RDX] = (_rdtsc >> 32) & -1u; ++ return kvm_skip_emulated_instruction(vcpu); ++} ++ ++static int handle_rdtscp(struct kvm_vcpu *vcpu) ++{ ++ u64 _rdtsc = rdtsc(); ++ printk_once("[HookEntry] hook entry function handle_rdtscp is working, return the rdtsc() if no hook , you can hook here!\n"); ++ vcpu->arch.regs[VCPU_REGS_RAX] = _rdtsc & -1u; ++ vcpu->arch.regs[VCPU_REGS_RDX] = (_rdtsc >> 32) & -1u; ++ return kvm_skip_emulated_instruction(vcpu); ++} ++ ++static int handle_umwait(struct kvm_vcpu *vcpu) ++{ ++ kvm_skip_emulated_instruction(vcpu); ++ return 1; ++} ++ ++static int handle_tpause(struct kvm_vcpu *vcpu) ++{ ++ kvm_skip_emulated_instruction(vcpu); ++ return 1; ++} ++ + /* + * The exit handlers return 1 if the exit was handled fully and guest execution + * may resume. Otherwise they set the kvm_run parameter to indicate what needs