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SubjectRe: Linux 4.3-rc2
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Date
Neither linux-4.3-rc1 nor linux-4.3-rc2 boot properly on my Intel
Core 2 E6600---lost one of two cores. Google search found one
other person reporting linux-4.3-rc1 also booting with only one core.
His Intel CPU was a year or two newer than mine.

linux-4.3-rc1 showed more problems during boot including something
about mtrr and another thing I forgot. The mtrr and ? are not
showing in -rc2. I had to photograph early boot to capture boot
change from a normal working kernel. (My Fedora is 14, gcc 4.5.1).


(start insert 3 screen photos transcribed)
AMIBIOS
ASUS P5B-Deluxe ACPI BIOS Revision 1238
CPU : Intel Core 2 CPU 6600 @ 2.4GHz
--
Booting Fedora (4.3.0-rc2) in 5 seconds...
--
early console in decompress_kernel
(next 5 lines never appear with 4.2.1 and older kernels)
input_data: 0x000000000181026e
input_len: 0x00000000003c93c3
output: 0x0000000001000000
output_len: 0x0000000000bc7870
run_size: 0x0000000000c72000

Decompressing Linux... Parsing ELF... done.
Booting the kernel.
smpboot: do_boot_cpu failed(-1) to wakeup CPU#1
(end insert)

but continues to bootup and works with one CPU.

/proc/cpuinfo shows only one of two CPU cores:
siblings : 1
cpu cores : 1
(both should be : 2 )

With -rc2, /proc/mtrr is same as a working kernel (-rc1?):
reg00: base=0x0d0000000 ( 3328MB), size= 256MB, count=1: uncachable
reg01: base=0x0e0000000 ( 3584MB), size= 512MB, count=1: uncachable
reg02: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back

How can I fix this?

Thanks,
Don




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