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head/sys/amd64/amd64/initcpu.c
| Show First 20 Lines • Show All 217 Lines • ▼ Show 20 Lines | initializecpu(void) | ||||
| if (!IS_BSP() && (cpu_stdext_feature & CPUID_STDEXT_SMEP)) | if (!IS_BSP() && (cpu_stdext_feature & CPUID_STDEXT_SMEP)) | ||||
| cr4 |= CR4_SMEP; | cr4 |= CR4_SMEP; | ||||
| load_cr4(cr4); | load_cr4(cr4); | ||||
| if ((amd_feature & AMDID_NX) != 0) { | if ((amd_feature & AMDID_NX) != 0) { | ||||
| msr = rdmsr(MSR_EFER) | EFER_NXE; | msr = rdmsr(MSR_EFER) | EFER_NXE; | ||||
| wrmsr(MSR_EFER, msr); | wrmsr(MSR_EFER, msr); | ||||
| pg_nx = PG_NX; | pg_nx = PG_NX; | ||||
| } | } | ||||
| hw_ibrs_recalculate(); | |||||
| switch (cpu_vendor_id) { | switch (cpu_vendor_id) { | ||||
| case CPU_VENDOR_AMD: | case CPU_VENDOR_AMD: | ||||
| init_amd(); | init_amd(); | ||||
| break; | break; | ||||
| case CPU_VENDOR_CENTAUR: | case CPU_VENDOR_CENTAUR: | ||||
| init_via(); | init_via(); | ||||
| break; | break; | ||||
| } | } | ||||
| Show All 34 Lines | |||||