Re: [PATCH] x86_64: sync_tsc fix the race (so we can boot)

[yhlu <yhlu.kernel@gmail.com>]

Eric,

Latest tree works.

YH


Booting processor 1/4 APIC 0x1
Initializing CPU#1
masked ExtINT on CPU#1
Calibrating delay using timer specific routine.. 4000.31 BogoMIPS (lpj=8000624)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU 1(1) -> Node 1 -> Core 0
 stepping 0a
CPU 1: Syncing TSC to CPU 0.
Booting processor 2/4 APIC 0x2
Initializing CPU#2
masked ExtINT on CPU#2
CPU 1: synchronized TSC with CPU 0 (last diff -4 cycles, maxerr 896 cycles)
Calibrating delay using timer specific routine.. 4000.28 BogoMIPS (lpj=8000572)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU 2(1) -> Node 2 -> Core 0
 stepping 0a
CPU 2: Syncing TSC to CPU 0.
Booting processor 3/4 APIC 0x3
Initializing CPU#3
masked ExtINT on CPU#3
CPU 2: synchronized TSC with CPU 0 (last diff -2 cycles, maxerr 909 cycles)
Calibrating delay using timer specific routine.. 4000.15 BogoMIPS (lpj=8000317)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU 3(1) -> Node 3 -> Core 0
 stepping 0a
CPU 3: Syncing TSC to CPU 0.
Brought up 4 CPUs
time.c: Using PIT/TSC based timekeeping.
testing NMI watchdog ... OK.
checking if image is initramfs...<6>CPU 3: synchronized TSC with CPU 0
(last diff -16 cycles, maxerr 1496 cycles)