Date: Wed, 10 Jan 2018 08:10:18 +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: r327764 - stable/11/sys/x86/x86 Message-ID: <201801100810.w0A8AI7T081959@repo.freebsd.org>
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Author: kib Date: Wed Jan 10 08:10:18 2018 New Revision: 327764 URL: https://svnweb.freebsd.org/changeset/base/327764 Log: MFC r327517: Use the new SDM-approved way to serialize x2APIC MSR writes. Modified: stable/11/sys/x86/x86/local_apic.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/x86/x86/local_apic.c ============================================================================== --- stable/11/sys/x86/x86/local_apic.c Wed Jan 10 06:30:59 2018 (r327763) +++ stable/11/sys/x86/x86/local_apic.c Wed Jan 10 08:10:18 2018 (r327764) @@ -211,6 +211,7 @@ lapic_write32(enum LAPIC_REGISTERS reg, uint32_t val) if (x2apic_mode) { mfence(); + lfence(); wrmsr(MSR_APIC_000 + reg, val); } else { *(volatile uint32_t *)(lapic_map + reg * LAPIC_MEM_MUL) = val;
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