Date: Sat, 25 Nov 2017 22:43:52 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r326216 - head/sys/powerpc/powerpc Message-ID: <201711252243.vAPMhqqV077162@repo.freebsd.org>
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Author: nwhitehorn Date: Sat Nov 25 22:43:52 2017 New Revision: 326216 URL: https://svnweb.freebsd.org/changeset/base/326216 Log: On AIM systems, it is not actually possible to stop the CPU timer, so we just set it to a large default value (and inherit any previously existing value), hoping it never turns over. Instead, silently allow spurious one-shots from rollovers. MFC after: 10 days Modified: head/sys/powerpc/powerpc/clock.c Modified: head/sys/powerpc/powerpc/clock.c ============================================================================== --- head/sys/powerpc/powerpc/clock.c Sat Nov 25 22:42:05 2017 (r326215) +++ head/sys/powerpc/powerpc/clock.c Sat Nov 25 22:43:52 2017 (r326216) @@ -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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