Date: Tue, 29 Dec 2015 22:14:21 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r292890 - in head/sys/x86: include x86 Message-ID: <201512292214.tBTMELG1001590@repo.freebsd.org>
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Author: kib Date: Tue Dec 29 22:14:21 2015 New Revision: 292890 URL: https://svnweb.freebsd.org/changeset/base/292890 Log: Add standard extended feature bit 6 from the Intel SDM rev. 57, which indicates that data-pointer in the saved x87 FPU state is only updated on FPU exceptions. Sponsored by: The FreeBSD Foundation MFC after: 1 week Modified: head/sys/x86/include/specialreg.h head/sys/x86/x86/identcpu.c Modified: head/sys/x86/include/specialreg.h ============================================================================== --- head/sys/x86/include/specialreg.h Tue Dec 29 21:54:43 2015 (r292889) +++ head/sys/x86/include/specialreg.h Tue Dec 29 22:14:21 2015 (r292890) @@ -335,6 +335,7 @@ #define CPUID_STDEXT_BMI1 0x00000008 #define CPUID_STDEXT_HLE 0x00000010 #define CPUID_STDEXT_AVX2 0x00000020 +#define CPUID_STDEXT_FDP_EXC 0x00000040 #define CPUID_STDEXT_SMEP 0x00000080 #define CPUID_STDEXT_BMI2 0x00000100 #define CPUID_STDEXT_ERMS 0x00000200 Modified: head/sys/x86/x86/identcpu.c ============================================================================== --- head/sys/x86/x86/identcpu.c Tue Dec 29 21:54:43 2015 (r292889) +++ head/sys/x86/x86/identcpu.c Tue Dec 29 22:14:21 2015 (r292890) @@ -932,6 +932,8 @@ printcpuinfo(void) "\005HLE" /* Advanced Vector Instructions 2 */ "\006AVX2" + /* FDP_EXCPTN_ONLY */ + "\007FDPEXC" /* Supervisor Mode Execution Prot. */ "\010SMEP" /* Bit Manipulation Instructions */
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