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[NTOS:KE] Report x86 CPU features in a separate function

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KiGetFeatureBits() is now being called in the early boot phase 0
when the Kernel Debugger is not yet initialized, so debug prints
are not available here. Move the debug prints into a new function
and call it at the right time. CORE-18023
This commit is contained in:
Stanislav Motylkov 2023-06-30 17:16:54 +03:00
parent 00715ccf8b
commit 6a6b383abd
3 changed files with 62 additions and 30 deletions
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6
ntoskrnl/include/internal/i386/ke.h
View file

@ -459,6 +459,12 @@ ULONG
NTAPI
KiGetFeatureBits(VOID);
#if DBG
CODE_SEG("INIT")
VOID
KiReportCpuFeatures(VOID);
#endif
VOID
NTAPI
KiThreadStartup(VOID);

80
ntoskrnl/ke/i386/cpu.c
View file

@ -380,11 +380,6 @@ KiGetFeatureBits(VOID)
if (CpuFeatures & X86_FEATURE_SSE) FeatureBits |= KF_XMMI;
if (CpuFeatures & X86_FEATURE_SSE2) FeatureBits |= KF_XMMI64;
if (CpuFeatures & X86_FEATURE_PAE)
{
DPRINT1("Support PAE\n");
}
/* Check if the CPU has hyper-threading */
if (CpuFeatures & X86_FEATURE_HT)
{
@ -430,35 +425,60 @@ KiGetFeatureBits(VOID)
}
}
#define print_supported(kf_value) ((FeatureBits & kf_value) ? #kf_value : "")
DPRINT1("Supported CPU features : %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s\n",
print_supported(KF_V86_VIS),
print_supported(KF_RDTSC),
print_supported(KF_CR4),
print_supported(KF_CMOV),
print_supported(KF_GLOBAL_PAGE),
print_supported(KF_LARGE_PAGE),
print_supported(KF_MTRR),
print_supported(KF_CMPXCHG8B),
print_supported(KF_MMX),
print_supported(KF_WORKING_PTE),
print_supported(KF_PAT),
print_supported(KF_FXSR),
print_supported(KF_FAST_SYSCALL),
print_supported(KF_XMMI),
print_supported(KF_3DNOW),
print_supported(KF_AMDK6MTRR),
print_supported(KF_XMMI64),
print_supported(KF_DTS),
print_supported(KF_NX_BIT),
print_supported(KF_NX_DISABLED),
print_supported(KF_NX_ENABLED));
#undef print_supported
/* Return the Feature Bits */
return FeatureBits;
}
#if DBG
CODE_SEG("INIT")
VOID
KiReportCpuFeatures(VOID)
{
ULONG CpuFeatures = 0;
CPU_INFO CpuInfo;
if (KiGetCpuVendor())
{
KiCpuId(&CpuInfo, 1);
CpuFeatures = CpuInfo.Edx;
}
DPRINT1("Supported CPU features: ");
#define print_kf_bit(kf_value) if (KeFeatureBits & kf_value) DbgPrint(#kf_value " ")
print_kf_bit(KF_V86_VIS);
print_kf_bit(KF_RDTSC);
print_kf_bit(KF_CR4);
print_kf_bit(KF_CMOV);
print_kf_bit(KF_GLOBAL_PAGE);
print_kf_bit(KF_LARGE_PAGE);
print_kf_bit(KF_MTRR);
print_kf_bit(KF_CMPXCHG8B);
print_kf_bit(KF_MMX);
print_kf_bit(KF_WORKING_PTE);
print_kf_bit(KF_PAT);
print_kf_bit(KF_FXSR);
print_kf_bit(KF_FAST_SYSCALL);
print_kf_bit(KF_XMMI);
print_kf_bit(KF_3DNOW);
print_kf_bit(KF_AMDK6MTRR);
print_kf_bit(KF_XMMI64);
print_kf_bit(KF_DTS);
print_kf_bit(KF_NX_BIT);
print_kf_bit(KF_NX_DISABLED);
print_kf_bit(KF_NX_ENABLED);
#undef print_kf_bit
#define print_cf(cpu_flag) if (CpuFeatures & cpu_flag) DbgPrint(#cpu_flag " ")
print_cf(X86_FEATURE_PAE);
print_cf(X86_FEATURE_APIC);
print_cf(X86_FEATURE_HT);
#undef print_cf
DbgPrint("\n");
}
#endif // DBG
CODE_SEG("INIT")
VOID
NTAPI

6
ntoskrnl/ke/i386/kiinit.c
View file

@ -480,6 +480,12 @@ KiInitializeKernel(IN PKPROCESS InitProcess,
/* Save CPU state */
KiSaveProcessorControlState(&Prcb->ProcessorState);
#if DBG
/* Print applied kernel features/policies and boot CPU features */
if (Number == 0)
KiReportCpuFeatures();
#endif
/* Get cache line information for this CPU */
KiGetCacheInformation();