On Sat, Mar 10, 2012 at 12:47:26PM +0100, Igor Mammedov wrote:
Reduce amount of consumed cpu time (i.e. don't spin forever) if number of started cpus are more then expected. And print a bug message into debug port.
Signed-off-by: Igor Mammedov imammedo@redhat.com
src/smp.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/src/smp.c b/src/smp.c index 8c077a1..9933ac6 100644 --- a/src/smp.c +++ b/src/smp.c @@ -115,8 +115,14 @@ smp_probe(void) msleep(10); } else { u8 cmos_smp_count = inb_cmos(CMOS_BIOS_SMP_COUNT);
while (cmos_smp_count + 1 != readl(&CountCPUs))
while (cmos_smp_count + 1 != readl(&CountCPUs)) {
if (cmos_smp_count + 1 < readl(&CountCPUs)) {
dprintf(1, "BUG: Expected %d cpu(s) but %d cpus started\n",
cmos_smp_count + 1, readl(&CountCPUs));
Shouldn't we print it to the console too?
hlt();
} yield();
}
}
// Restore memory.
-- 1.7.7.6
-- Gleb.