Date: Tue, 15 Aug 2017 09:44:19 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r322534 - stable/11/lib/libc/x86/sys Message-ID: <201708150944.v7F9iJnf070370@repo.freebsd.org>
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Author: kib Date: Tue Aug 15 09:44:18 2017 New Revision: 322534 URL: https://svnweb.freebsd.org/changeset/base/322534 Log: MFC r322456: On i386 with CPUID but without SSE2, set lfence_works to LMB_NONE instead of looping. Modified: stable/11/lib/libc/x86/sys/__vdso_gettc.c Directory Properties: stable/11/ (props changed) Modified: stable/11/lib/libc/x86/sys/__vdso_gettc.c ============================================================================== --- stable/11/lib/libc/x86/sys/__vdso_gettc.c Tue Aug 15 09:40:57 2017 (r322533) +++ stable/11/lib/libc/x86/sys/__vdso_gettc.c Tue Aug 15 09:44:18 2017 (r322534) @@ -101,6 +101,7 @@ init_fence(void) #if defined(__i386__) u_int cpuid_supported, p[4]; + lfence_works = LMB_NONE; __asm __volatile( " pushfl\n" " popl %%eax\n" @@ -121,8 +122,7 @@ init_fence(void) cpuidp(0x1, p); if ((p[3] & CPUID_SSE2) != 0) lfence_works = select_lmb(); - } else - lfence_works = LMB_NONE; + } #elif defined(__amd64__) lfence_works = select_lmb(); #else
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