linux.git/arch/x86/kernel/cpu/amd.c, branch v2.6.35

x86, amd: Get multi-node CPU info from NodeId MSR instead of PCI config space

2009-12-16T23:06:23+00:00

Use NodeId MSR to get NodeId and number of nodes per processor.

Signed-off-by: Andreas Herrmann 
LKML-Reference: <20091216144355.GB28798@alberich.amd.com>
Signed-off-by: H. Peter Anvin

x86: Limit the number of processor bootup messages

2009-12-11T23:16:00+00:00

When there are a large number of processors in a system, there
is an excessive amount of messages sent to the system console.
It's estimated that with 4096 processors in a system, and the
console baudrate set to 56K, the startup messages will take
about 84 minutes to clear the serial port.

This set of patches limits the number of repetitious messages
which contain no additional information.  Much of this information
is obtainable from the /proc and /sysfs.   Some of the messages
are also sent to the kernel log buffer as KERN_DEBUG messages so
dmesg can be used to examine more closely any details specific to
a problem.

The new cpu bootup sequence for system_state == SYSTEM_BOOTING:

Booting Node   0, Processors  #1 #2 #3 #4 #5 #6 #7 Ok.
Booting Node   1, Processors  #8 #9 #10 #11 #12 #13 #14 #15 Ok.
...
Booting Node   3, Processors  #56 #57 #58 #59 #60 #61 #62 #63 Ok.
Brought up 64 CPUs

After the system is running, a single line boot message is displayed
when CPU's are hotplugged on:

    Booting Node %d Processor %d APIC 0x%x

Status of the following lines:

    CPU: Physical Processor ID:		printed once (for boot cpu)
    CPU: Processor Core ID:		printed once (for boot cpu)
    CPU: Hyper-Threading is disabled	printed once (for boot cpu)
    CPU: Thermal monitoring enabled	printed once (for boot cpu)
    CPU %d/0x%x -> Node %d:		removed
    CPU %d is now offline:		only if system_state == RUNNING
    Initializing CPU#%d:		KERN_DEBUG

Signed-off-by: Mike Travis 
LKML-Reference: <4B219E28.8080601@sgi.com>
Signed-off-by: H. Peter Anvin

x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes

2009-11-23T19:59:53+00:00

display_cacheinfo() doesn't display anything anymore and it is used to
detect CPU cache sizes. Rename it accordingly.

Signed-off-by: Borislav Petkov 
LKML-Reference: <20091121130145.GA31357@liondog.tnic>
Signed-off-by: H. Peter Anvin

trivial: fix missing printk space in amd_k7_smp_check

2009-09-21T13:14:56+00:00

This trivial patch fixes one missing space in printk.

I already fixed it about half a year ago or more, but the change (in
arch/x86/kernel/cpu/smpboot.c at that time) didn't made into
mainline yet.

Signed-off-by: Michael Tokarev 

index 28e5f59..6c139ed 100644
Signed-off-by: Jiri Kosina

x86, EDAC: Provide function to return NodeId of a CPU

2009-09-16T09:33:40+00:00

Signed-off-by: Andreas Herrmann 
Signed-off-by: Borislav Petkov 
Acked-by: H. Peter Anvin

Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-09-14T14:57:32+00:00

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (22 commits)
  x86: Fix code patching for paravirt-alternatives on 486
  x86, msr: change msr-reg.o to obj-y, and export its symbols
  x86: Use hard_smp_processor_id() to get apic id for AMD K8 cpus
  x86, sched: Workaround broken sched domain creation for AMD Magny-Cours
  x86, mcheck: Use correct cpumask for shared bank4
  x86, cacheinfo: Fixup L3 cache information for AMD multi-node processors
  x86: Fix CPU llc_shared_map information for AMD Magny-Cours
  x86, msr: Fix msr-reg.S compilation with gas 2.16.1, on 32-bit too
  x86: Move kernel_fpu_using to irq_fpu_usable in asm/i387.h
  x86, msr: fix msr-reg.S compilation with gas 2.16.1
  x86, msr: Export the register-setting MSR functions via /dev/*/msr
  x86, msr: Create _on_cpu helpers for {rw,wr}msr_safe_regs()
  x86, msr: Have the _safe MSR functions return -EIO, not -EFAULT
  x86, msr: CFI annotations, cleanups for msr-reg.S
  x86, asm: Make _ASM_EXTABLE() usable from assembly code
  x86, asm: Add 32-bit versions of the combined CFI macros
  x86, AMD: Disable wrongly set X86_FEATURE_LAHF_LM CPUID bit
  x86, msr: Rewrite AMD rd/wrmsr variants
  x86, msr: Add rd/wrmsr interfaces with preset registers
  x86: add specific support for Intel Atom architecture
  ...

x86: Use hard_smp_processor_id() to get apic id for AMD K8 cpus

2009-09-04T07:55:29+00:00

Otherwise, system with apci id lifting will have wrong apicid in
/proc/cpuinfo.

and use that in srat_detect_node().

Signed-off-by: Yinghai Lu 
Cc: Andreas Herrmann 
Cc: Suresh Siddha 
Cc: Cyrill Gorcunov 
LKML-Reference: <4A998CCA.1040407@kernel.org>
Signed-off-by: Ingo Molnar

x86: Fix CPU llc_shared_map information for AMD Magny-Cours

2009-09-03T22:09:59+00:00

Construct entire NodeID and use it as cpu_llc_id. Thus internal node
siblings are stored in llc_shared_map.

Signed-off-by: Andreas Herrmann 
Signed-off-by: H. Peter Anvin

x86, AMD: Disable wrongly set X86_FEATURE_LAHF_LM CPUID bit

2009-08-31T22:14:29+00:00

fbd8b1819e80ac5a176d085fdddc3a34d1499318 turns off the bit for
/proc/cpuinfo. However, a proper/full fix would be to additionally
turn off the bit in the CPUID output so that future callers get
correct CPU features info.

Do that by basically reversing what the BIOS wrongfully does at boot.

Signed-off-by: Borislav Petkov 
LKML-Reference: <1251705011-18636-3-git-send-email-petkovbb@gmail.com>
Signed-off-by: H. Peter Anvin

Merge commit 'v2.6.31-rc7' into x86/cleanups

2009-08-24T10:25:54+00:00

Merge reason: we were on -rc1 before - go up to -rc7

Signed-off-by: Ingo Molnar