Date: Sun, 17 Oct 2010 14:25:55 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r213977 - stable/8/sys/sparc64/sparc64 Message-ID: <201010171425.o9HEPtRp034137@svn.freebsd.org>
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Author: marius Date: Sun Oct 17 14:25:55 2010 New Revision: 213977 URL: http://svn.freebsd.org/changeset/base/213977 Log: MFC: r213868 - In the spirit of r212559 add a comment describing what will eventually lower the PIL. - Just as with the AP ensure that the (S)TICK timer(s) are in a known state when starting BSPs. Modified: stable/8/sys/sparc64/sparc64/mp_machdep.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/sparc64/sparc64/mp_machdep.c ============================================================================== --- stable/8/sys/sparc64/sparc64/mp_machdep.c Sun Oct 17 14:25:01 2010 (r213976) +++ stable/8/sys/sparc64/sparc64/mp_machdep.c Sun Oct 17 14:25:55 2010 (r213977) @@ -431,6 +431,12 @@ cpu_mp_bootstrap(struct pcpu *pc) */ cache_enable(pc->pc_impl); + /* + * Clear (S)TICK timer(s) (including NPT) and ensure they are stopped. + */ + tick_clear(pc->pc_impl); + tick_stop(pc->pc_impl); + /* Lock the kernel TSB in the TLB. */ pmap_map_tsb(); @@ -443,7 +449,11 @@ cpu_mp_bootstrap(struct pcpu *pc) /* Initialize global registers. */ cpu_setregs(pc); - /* Enable interrupts. */ + /* + * Enable interrupts. + * Note that the PIL we be lowered indirectly via sched_throw(NULL) + * when fake spinlock held by the idle thread eventually is released. + */ wrpr(pstate, 0, PSTATE_KERNEL); /* Start the (S)TICK interrupts. */
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