Author: grehan Date: Mon Oct 27 22:02:35 2014 New Revision: 273748 URL: https://svnweb.freebsd.org/changeset/base/273748
Log: Output a summary of optional SVM features in dmesg similar to CPU features. If bootverbose is enabled, a detailed list is provided; otherwise, a single-line summary is displayed. Differential Revision: https://reviews.freebsd.org/D1008 Reviewed by: jhb, neel MFC after: 1 week Modified: head/sys/x86/x86/identcpu.c Modified: head/sys/x86/x86/identcpu.c ============================================================================== --- head/sys/x86/x86/identcpu.c Mon Oct 27 21:29:42 2014 (r273747) +++ head/sys/x86/x86/identcpu.c Mon Oct 27 22:02:35 2014 (r273748) @@ -76,6 +76,7 @@ static u_int find_cpu_vendor_id(void); static void print_AMD_info(void); static void print_INTEL_info(void); static void print_INTEL_TLB(u_int data); +static void print_svm_info(void); static void print_via_padlock_info(void); static void print_vmx_info(void); @@ -932,6 +933,9 @@ printcpuinfo(void) if (cpu_feature2 & CPUID2_VMX) print_vmx_info(); + if (amd_feature2 & AMDID2_SVM) + print_svm_info(); + if ((cpu_feature & CPUID_HTT) && cpu_vendor_id == CPU_VENDOR_AMD) cpu_feature &= ~CPUID_HTT; @@ -1735,6 +1739,67 @@ print_INTEL_TLB(u_int data) } } +static void +print_svm_info(void) +{ + u_int features, regs[4]; + uint64_t msr; + int comma; + + printf("\n SVM: "); + do_cpuid(0x8000000A, regs); + features = regs[3]; + + msr = rdmsr(MSR_VM_CR); + if ((msr & VM_CR_SVMDIS) == VM_CR_SVMDIS) + printf("(disabled in BIOS) "); + + if (!bootverbose) { + comma = 0; + if (features & (1 << 0)) { + printf("%sNP", comma ? "," : ""); + comma = 1; + } + if (features & (1 << 3)) { + printf("%sNRIP", comma ? "," : ""); + comma = 1; + } + if (features & (1 << 5)) { + printf("%sVClean", comma ? "," : ""); + comma = 1; + } + if (features & (1 << 6)) { + printf("%sAFlush", comma ? "," : ""); + comma = 1; + } + if (features & (1 << 7)) { + printf("%sDAssist", comma ? "," : ""); + comma = 1; + } + printf("%sNAsids=%d", comma ? "," : "", regs[1]); + return; + } + + printf("Features=0x%b", features, + "\020" + "\001NP" /* Nested paging */ + "\002LbrVirt" /* LBR virtualization */ + "\003SVML" /* SVM lock */ + "\004NRIPS" /* NRIP save */ + "\005TscRateMsr" /* MSR based TSC rate control */ + "\006VmcbClean" /* VMCB clean bits */ + "\007FlushByAsid" /* Flush by ASID */ + "\010DecodeAssist" /* Decode assist */ + "\011<b8>" + "\012<b9>" + "\013PauseFilter" /* PAUSE intercept filter */ + "\014<b11>" + "\015PauseFilterThreshold" /* PAUSE filter threshold */ + "\016AVIC" /* virtual interrupt controller */ + ); + printf("\nRevision=%d, ASIDs=%d", regs[0] & 0xff, regs[1]); +} + #ifdef __i386__ static void print_transmeta_info(void) _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
