diff options
Diffstat (limited to 'usr/src')
| -rw-r--r-- | usr/src/uts/i86pc/os/cpuid.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/usr/src/uts/i86pc/os/cpuid.c b/usr/src/uts/i86pc/os/cpuid.c index cd7d52b0da..c6cf704d64 100644 --- a/usr/src/uts/i86pc/os/cpuid.c +++ b/usr/src/uts/i86pc/os/cpuid.c @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2011 by Delphix. All rights reserved. + * Copyright (c) 2011, 2016 by Delphix. All rights reserved. * Copyright 2013 Nexenta Systems, Inc. All rights reserved. * Copyright 2014 Josef "Jeff" Sipek <jeffpc@josefsipek.net> */ @@ -423,9 +423,8 @@ static struct cpuid_info cpuid_info0; * (loosely defined as "pre-Pentium-4"): * P6, PII, Mobile PII, PII Xeon, PIII, Mobile PIII, PIII Xeon */ - #define IS_LEGACY_P6(cpi) ( \ - cpi->cpi_family == 6 && \ + cpi->cpi_family == 6 && \ (cpi->cpi_model == 1 || \ cpi->cpi_model == 3 || \ cpi->cpi_model == 5 || \ @@ -1465,7 +1464,13 @@ cpuid_pass1(cpu_t *cpu, uchar_t *featureset) xcpuid = 0; switch (cpi->cpi_vendor) { case X86_VENDOR_Intel: - if (IS_NEW_F6(cpi) || cpi->cpi_family >= 0xf) + /* + * On KVM we know we will have proper support for extended + * cpuid. + */ + if (IS_NEW_F6(cpi) || cpi->cpi_family >= 0xf || + (get_hwenv() == HW_KVM && cpi->cpi_family == 6 && + (cpi->cpi_model == 6 || cpi->cpi_model == 2))) xcpuid++; break; case X86_VENDOR_AMD: |