Date: Fri, 30 Apr 2021 14:45:38 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 72a42ec63b4a - main - amd64: disable LA57 by default for now Message-ID: <202104301445.13UEjcgg065887@gitrepo.freebsd.org>
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The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=72a42ec63b4a98f812f5f6164415eeb9a55e1933 commit 72a42ec63b4a98f812f5f6164415eeb9a55e1933 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-04-28 15:50:16 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-04-30 14:43:45 +0000 amd64: disable LA57 by default for now A testing on the real hardware uncovered an issue, and since I do not have access to the machine, disable until the bug can be fixed. Reported by: "Pieper, Jeffrey E" <jeffrey.e.pieper@intel.com> Sponsored by: The FreeBSD Foundation MFC after: 3 days --- sys/amd64/amd64/pmap.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 5a6a1cee8b8c..a4046cc1f687 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -2080,8 +2080,7 @@ pmap_bootstrap_la57(void *arg __unused) if ((cpu_stdext_feature2 & CPUID_STDEXT2_LA57) == 0) return; - if (!TUNABLE_INT_FETCH("vm.pmap.la57", &la57)) - la57 = 1; + TUNABLE_INT_FETCH("vm.pmap.la57", &la57); if (!la57) return;
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