Date: Tue, 19 Sep 2017 17:12:18 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r323771 - projects/powernv/powerpc/powerpc Message-ID: <201709191712.v8JHCI1D055205@repo.freebsd.org>
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Author: nwhitehorn Date: Tue Sep 19 17:12:18 2017 New Revision: 323771 URL: https://svnweb.freebsd.org/changeset/base/323771 Log: Avoid going into an infinite decrementer interrupt loop if the kernel starts with a small or negative decrementer value. Modified: projects/powernv/powerpc/powerpc/clock.c Modified: projects/powernv/powerpc/powerpc/clock.c ============================================================================== --- projects/powernv/powerpc/powerpc/clock.c Tue Sep 19 16:51:51 2017 (r323770) +++ projects/powernv/powerpc/powerpc/clock.c Tue Sep 19 17:12:18 2017 (r323771) @@ -141,6 +141,9 @@ decr_intr(struct trapframe *frame) } else if (s->mode == 2) { nticks = 1; decr_et_stop(NULL); + } else if (s->mode == 0) { + /* Potemkin timer ran out without an event. Just reset it. */ + decr_et_stop(NULL); } while (nticks-- > 0) {
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