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[NTOSKRNL]

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- shrink cpu features output.
  - Add reference for the detection of non SYSENTER aware but claiming so CPUs detection

svn path=/trunk/; revision=50993
This commit is contained in:
Jérôme Gardou 2011-03-07 18:45:11 +00:00
parent ba43b429b9
commit f7049d7fb7
1 changed files with 4 additions and 2 deletions
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6
reactos/ntoskrnl/ke/i386/cpu.c
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@ -311,7 +311,8 @@ KiGetFeatureBits(VOID)
Reg[3] |= 0x800; Reg[3] |= 0x800;
} }
/* Check if the CPU is too old to support SYSENTER */ /* Check if the CPU is too old to support SYSENTER,
* See Intel CPUID instruction manual for details*/
if ((Reg[0] & 0x0FFF3FFF) < 0x00000633) if ((Reg[0] & 0x0FFF3FFF) < 0x00000633)
{ {
/* Disable it */ /* Disable it */
@ -483,7 +484,7 @@ KiGetFeatureBits(VOID)
DPRINT1("Supported CPU features :\n"); DPRINT1("Supported CPU features :\n");
#define print_supported(kf_value) \ #define print_supported(kf_value) \
if(FeatureBits & kf_value) DPRINT1("\t" #kf_value "\n") if(FeatureBits & kf_value) DPRINT1("\t" #kf_value)
print_supported(KF_V86_VIS); print_supported(KF_V86_VIS);
print_supported(KF_RDTSC); print_supported(KF_RDTSC);
print_supported(KF_CR4); print_supported(KF_CR4);
@ -506,6 +507,7 @@ KiGetFeatureBits(VOID)
print_supported(KF_NX_DISABLED); print_supported(KF_NX_DISABLED);
print_supported(KF_NX_ENABLED); print_supported(KF_NX_ENABLED);
#undef print_supported #undef print_supported
DPRINT1("\n");
/* Return the Feature Bits */ /* Return the Feature Bits */
return FeatureBits; return FeatureBits;