diff options
Diffstat (limited to 'usr/src/uts/i86pc/os/cpuid.c')
| -rw-r--r-- | usr/src/uts/i86pc/os/cpuid.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/usr/src/uts/i86pc/os/cpuid.c b/usr/src/uts/i86pc/os/cpuid.c index 586ec0656b..812390fe8f 100644 --- a/usr/src/uts/i86pc/os/cpuid.c +++ b/usr/src/uts/i86pc/os/cpuid.c @@ -2795,6 +2795,13 @@ cpuid_pass4(cpu_t *cpu, uint_t *hwcap_out) hwcap_flags_2 |= AV_386_2_RDRAND; } + /* Detect systems with a potential CPUID limit */ + if (cpi->cpi_vendor == X86_VENDOR_Intel && cpi->cpi_maxeax < 4) { + cmn_err(CE_NOTE, "CPUID limit detected, " + "see the CPUID(7D) man page for details\n"); + } + + if (cpi->cpi_xmaxeax < 0x80000001) goto pass4_done; |