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<blockquote data-quote="HATHOR" data-source="post: 146804">AW: Acer 8930G VT im Bios aktivierenEs gibt ein sogenanntes LINUX-BIOS (ist jetzt umbenannt in Coreboot), das das IA_FEATURE_CONTROL-Bit umschaltet:[code]#define IA32_FEATURE_CONTROL 0x003a#define CPUID_VMX (1 &lt;&lt; 5)#define CPUID_SMX (1 &lt;&lt; 6)static void enable_vmx(void){&nbsp; &nbsp; &nbsp; &nbsp; struct cpuid_result regs;&nbsp; &nbsp; &nbsp; &nbsp; msr_t msr;&nbsp; &nbsp; &nbsp; &nbsp; msr = rdmsr(IA32_FEATURE_CONTROL);&nbsp; &nbsp; &nbsp; &nbsp; if (msr.lo &amp; (1 &lt;&lt; 0)) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; /* VMX locked. If we set it again we get an illegal&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; * instruction&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; */&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return;&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; regs = cpuid(1);&nbsp; &nbsp; &nbsp; &nbsp; if (regs.ecx &amp; CPUID_VMX) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; msr.lo |= (1 &lt;&lt; 2);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (regs.ecx &amp; CPUID_SMX)&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; msr.lo |= (1 &lt;&lt; 1);&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; wrmsr(IA32_FEATURE_CONTROL, msr);&nbsp; &nbsp; &nbsp; &nbsp; msr.lo |= (1 &lt;&lt; 0); /* Set lock bit */&nbsp; &nbsp; &nbsp; &nbsp; wrmsr(IA32_FEATURE_CONTROL, msr);}[/code]Infos:<a href="http://de.wikipedia.org/wiki/Coreboot" target="_blank">coreboot ? Wikipedia</a><a href="http://www.coreboot.org/Welcome_to_coreboot" target="_blank">coreboot</a><a href="http://www.coreboot.org/Supported_Motherboards" target="_blank">Supported Motherboards - coreboot</a><a href="http://www.coreboot.org/Supported_Chipsets_and_Devices" target="_blank">Supported Chipsets and Devices - coreboot</a><a href="http://www.coreboot.org/Download_coreboot" target="_blank">Download coreboot - coreboot</a><a href="http://www.coreboot.org/QEMU" target="_blank">QEMU - coreboot</a><a href="http://www.coreboot.org/FILO" target="_blank">FILO - coreboot</a><a href="http://www.coreboot.org/Libpayload" target="_blank">Libpayload - coreboot</a><a href="http://www.coreboot.org/Flashrom" target="_blank">Flashrom - coreboot</a><a href="http://www.coreboot.org/Flashrom_Live_CD" target="_blank">Flashrom Live CD - coreboot</a><a href="http://www.coreboot.org/Nvramtool" target="_blank">Nvramtool - coreboot</a><a href="http://www.coreboot.org/Ectool" target="_blank">Ectool - coreboot</a></blockquote>

[QUOTE="HATHOR, post: 146804"] [b]AW: Acer 8930G VT im Bios aktivieren[/b] Es gibt ein sogenanntes LINUX-BIOS (ist jetzt umbenannt in Coreboot), das das IA_FEATURE_CONTROL-Bit umschaltet: [code] #define IA32_FEATURE_CONTROL 0x003a #define CPUID_VMX (1 << 5) #define CPUID_SMX (1 << 6) static void enable_vmx(void) { struct cpuid_result regs; msr_t msr; msr = rdmsr(IA32_FEATURE_CONTROL); if (msr.lo & (1 << 0)) { /* VMX locked. If we set it again we get an illegal * instruction */ return; } regs = cpuid(1); if (regs.ecx & CPUID_VMX) { msr.lo |= (1 << 2); if (regs.ecx & CPUID_SMX) msr.lo |= (1 << 1); } wrmsr(IA32_FEATURE_CONTROL, msr); msr.lo |= (1 << 0); /* Set lock bit */ wrmsr(IA32_FEATURE_CONTROL, msr); } [/code] Infos: [url=http://de.wikipedia.org/wiki/Coreboot]coreboot ? Wikipedia[/url] [url=http://www.coreboot.org/Welcome_to_coreboot]coreboot[/url] [url=http://www.coreboot.org/Supported_Motherboards]Supported Motherboards - coreboot[/url] [url=http://www.coreboot.org/Supported_Chipsets_and_Devices]Supported Chipsets and Devices - coreboot[/url] [url=http://www.coreboot.org/Download_coreboot]Download coreboot - coreboot[/url] [url=http://www.coreboot.org/QEMU]QEMU - coreboot[/url] [url=http://www.coreboot.org/FILO]FILO - coreboot[/url] [url=http://www.coreboot.org/Libpayload]Libpayload - coreboot[/url] [url=http://www.coreboot.org/Flashrom]Flashrom - coreboot[/url] [url=http://www.coreboot.org/Flashrom_Live_CD]Flashrom Live CD - coreboot[/url] [url=http://www.coreboot.org/Nvramtool]Nvramtool - coreboot[/url] [url=http://www.coreboot.org/Ectool]Ectool - coreboot[/url] [/QUOTE]

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