| 103,20 → 103,7 |
|---|
| |
| void arch_pre_mm_init(void) |
| { |
| cpu_info_t cpuid_s; |
| |
| cpuid(AMD_CPUID_EXTENDED,&cpuid_s); |
| if (! (cpuid_s.cpuid_edx & (1<<AMD_EXT_NOEXECUTE))) |
| panic("Processor does not support No-execute pages.\n"); |
| |
| cpuid(INTEL_CPUID_STANDARD,&cpuid_s); |
| if (! (cpuid_s.cpuid_edx & (1<<INTEL_FXSAVE))) |
| panic("Processor does not support FXSAVE/FXRESTORE.\n"); |
| |
| if (! (cpuid_s.cpuid_edx & (1<<INTEL_SSE2))) |
| panic("Processor does not support SSE2 instructions.\n"); |
| |
| /* Enable No-execute pages */ |
| /* Enable no-execute pages */ |
| set_efer_flag(AMD_NXE_FLAG); |
| /* Enable FPU */ |
| cpu_setup_fpu(); |
| 123,9 → 110,9 |
|---|
| |
| /* Initialize segmentation */ |
| pm_init(); |
| |
| /* Disable I/O on nonprivileged levels |
| * clear the NT(nested-thread) flag |
| |
| /* Disable I/O on nonprivileged levels |
| * clear the NT (nested-thread) flag |
| */ |
| clean_IOPL_NT_flags(); |
| /* Disable alignment check */ |