From 65d87ade1ee6f3ac099105e3511bd09bdc24cf3f Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Thu, 26 Jul 2018 11:10:08 -0700 Subject: x86: Correct index_cpu_LZCNT [BZ # 23456] cpu-features.h has #define bit_cpu_LZCNT (1 << 5) #define index_cpu_LZCNT COMMON_CPUID_INDEX_1 #define reg_LZCNT But the LZCNT feature bit is in COMMON_CPUID_INDEX_80000001: Initial EAX Value: 80000001H ECX Extended Processor Signature and Feature Bits: Bit 05: LZCNT available index_cpu_LZCNT should be COMMON_CPUID_INDEX_80000001, not COMMON_CPUID_INDEX_1. The VMX feature bit is in COMMON_CPUID_INDEX_1: Initial EAX Value: 01H Feature Information Returned in the ECX Register: 5 VMX Reviewed-by: Carlos O'Donell [BZ # 23456] * sysdeps/x86/cpu-features.h (index_cpu_LZCNT): Set to COMMON_CPUID_INDEX_80000001. --- ChangeLog | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 3e25bd7a18..dcd8258635 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2018-07-26 H.J. Lu + + [BZ # 23456] + * sysdeps/x86/cpu-features.h (index_cpu_LZCNT): Set to + COMMON_CPUID_INDEX_80000001. + 2018-07-26 Stefan Liebler * string/tst-xbzero-opt.c (use_test_buffer): New function. -- cgit 1.4.1