diff options
Diffstat (limited to 'usr/src/uts/i86pc/os/cpuid.c')
| -rw-r--r-- | usr/src/uts/i86pc/os/cpuid.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/usr/src/uts/i86pc/os/cpuid.c b/usr/src/uts/i86pc/os/cpuid.c index dfb72dacf4..027ed29c3d 100644 --- a/usr/src/uts/i86pc/os/cpuid.c +++ b/usr/src/uts/i86pc/os/cpuid.c @@ -32,7 +32,7 @@ * Portions Copyright 2009 Advanced Micro Devices, Inc. */ /* - * Copyright (c) 2015, Joyent, Inc. All rights reserved. + * Copyright 2016 Joyent, Inc. */ /* * Various routines to handle identification @@ -57,6 +57,8 @@ #include <sys/auxv_386.h> #include <sys/memnode.h> #include <sys/pci_cfgspace.h> +#include <sys/comm_page.h> +#include <sys/tsc.h> #ifdef __xpv #include <sys/hypervisor.h> @@ -2826,6 +2828,13 @@ cpuid_pass4(cpu_t *cpu, uint_t *hwcap_out) } + /* 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; @@ -4607,27 +4616,30 @@ patch_tsc_read(int flag) size_t cnt; switch (flag) { - case X86_NO_TSC: + case TSC_NONE: cnt = &_no_rdtsc_end - &_no_rdtsc_start; (void) memcpy((void *)tsc_read, (void *)&_no_rdtsc_start, cnt); break; - case X86_HAVE_TSCP: - cnt = &_tscp_end - &_tscp_start; - (void) memcpy((void *)tsc_read, (void *)&_tscp_start, cnt); - break; - case X86_TSC_MFENCE: + case TSC_RDTSC_MFENCE: cnt = &_tsc_mfence_end - &_tsc_mfence_start; (void) memcpy((void *)tsc_read, (void *)&_tsc_mfence_start, cnt); break; - case X86_TSC_LFENCE: + case TSC_RDTSC_LFENCE: cnt = &_tsc_lfence_end - &_tsc_lfence_start; (void) memcpy((void *)tsc_read, (void *)&_tsc_lfence_start, cnt); break; + case TSC_TSCP: + cnt = &_tscp_end - &_tscp_start; + (void) memcpy((void *)tsc_read, (void *)&_tscp_start, cnt); + break; default: + /* Bail for unexpected TSC types. (TSC_NONE covers 0) */ + cmn_err(CE_PANIC, "Unrecogized TSC type: %d", flag); break; } + tsc_type = flag; } int |