| Commit message (Collapse) | Author | Age |
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We have had a number of cases where <asm/cpufeature.h> (and its
predecessors) have diverged substantially from the names list in
/proc/cpuinfo. This patch generates the latter from the former.
It retains the option for explicitly overriding the strings, but by
making that require a separate action it should at least be less
likely to happen.
It would be good to do a future pass and rename strings that are
gratuituously different in the kernel (/proc/cpuinfo is a userspace
interface and must remain constant.)
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Conflicts:
arch/x86/kernel/cpu/cyrix.c
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Use X86_FEATURE_NOPL to determine if it is safe to use P6 NOPs in
alternatives. Also, replace table and loop with simple if statement.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The long noops ("NOPL") are supposed to be detected by family >= 6.
Unfortunately, several non-Intel x86 implementations, both hardware
and software, don't obey this dictum. Instead, probe for NOPL
directly by executing a NOPL instruction and see if we get #UD.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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This patch adds some configuration options that allow to compile out
CPU vendor-specific code in x86 kernels (in arch/x86/kernel/cpu). The
new configuration options are only visible when CONFIG_EMBEDDED is
selected, as they are mostly interesting for space savings reasons.
An example of size saving, on x86 with only Intel CPU support:
text data bss dec hex filename
1125479 118760 212992 1457231 163c4f vmlinux.old
1121355 116536 212992 1450883 162383 vmlinux
-4124 -2224 0 -6348 -18CC +/-
However, I'm not exactly sure that the Kconfig wording is correct with
regard to !64BIT / 64BIT.
[ mingo@elte.hu: convert macro to inline ]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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arch/x86/kernel/cpu/intel.c defines a few fallback functions
(cmpxchg_*()) that are used when the CPU doesn't support cmpxchg
and/or cmpxchg64 natively. However, while defined in an Intel-specific
file, these functions are also used for CPUs from other vendors when
they don't support cmpxchg and/or cmpxchg64. This breaks the
compilation when support for Intel CPUs is disabled.
This patch moves these functions to a new
arch/x86/kernel/cpu/cmpxchg.c file, unconditionally compiled when
X86_32 is enabled.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: michael@free-electrons.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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movsl_mask is currently defined in arch/x86/kernel/cpu/intel.c, which
contains code specific to Intel CPUs. However, movsl_mask is used in
the non-CPU specific code in arch/x86/lib/usercopy_32.c, which breaks
the compilation when support for Intel CPUs is compiled out.
This patch solves this problem by moving movsl_mask's definition close
to its users in arch/x86/lib/usercopy_32.c.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: michael@free-electrons.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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fix !PCI build failure:
arch/x86/kernel/cpu/intel_cacheinfo.c: In function 'get_k8_northbridge':
arch/x86/kernel/cpu/intel_cacheinfo.c:675: error: implicit declaration of function 'pci_match_id'
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conflicts:
arch/x86/kernel/cpu/intel_cacheinfo.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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On Monday 21 July 2008, Ingo Molnar wrote:
> > applied to tip/x86/cpu, thanks Mark.
> >
> > I've done some coding style fixes for the new functions you've
> > introduced, see that commit below.
>
> -tip testing found the following build failure:
>
> arch/x86/kernel/built-in.o: In function `show_cache_disable':
> intel_cacheinfo.c:(.text+0xbbf2): undefined reference to `k8_northbridges'
> arch/x86/kernel/built-in.o: In function `store_cache_disable':
> intel_cacheinfo.c:(.text+0xbd91): undefined reference to `k8_northbridges'
>
> please send a delta fix patch against the tip/x86/cpu branch:
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> http://people.redhat.com/mingo/tip.git/README
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> which has your patch plus the cleanup applied.
delta fix patch follows. It removes the dependency on k8_northbridges.
-Mark Langsdorf
Operating System Research Center
AMD
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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No change in functionality.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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New versions of AMD processors have support to disable parts
of their L3 caches if too many MCEs are generated by the
L3 cache.
This patch provides a /sysfs interface under the cache
hierarchy to display which caches indices are disabled
(if any) and to monitoring applications to disable a
cache index.
This patch does not set an automatic policy to disable
the L3 cache. Policy decisions would need to be made
by a RAS handler. This patch merely makes it easier to
see what indices are currently disabled.
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Add support for the E820_UNUSABLE memory type, which is defined in
Revision 3.0b (Oct. 10, 2006) of the ACPI Specification on p. 394 Table
14-1:
AddressRangeUnusuable This range of address contains memory in which
errors have been detected. This range must not be used by the OSPM.
Signed-off-by: Joseph Cihula <joseph.cihula@intel.com>
Signed-off-by: Shane Wang <shane.wang@intel.com>
Signed-off-by: Gang Wei <gang.wei@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conflicts:
arch/x86/kernel/apic_32.c
arch/x86/kernel/apic_64.c
arch/x86/kernel/setup.c
drivers/pci/intel-iommu.c
include/asm-x86/cpufeature.h
include/asm-x86/dma-mapping.h
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after following patch,
commit 1b313f4a6d7bee7b2c034b3f1e203bc360a71cca
Author: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Mon Aug 18 20:45:57 2008 +0400
x86: apic - generic_processor_info
- use physid_set instead of phys_cpu and physids_or
- set phys_cpu_present_map bit AFTER check for allowed
number of processors
- add checking for APIC valid version in 64bit mode
(mostly not needed but added for merging purpose)
- add apic_version definition for 64bit mode which
is used now
we are getting warning for acpi path on 64 bit system.
make the 64-bit side fill in apic_version[] as well.
[ mingo@elte.hu: build fix ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Just add parenthesis to be identical of current
64bit implementation (so diff will not complain).
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- use physid_set instead of phys_cpu and physids_or
- set phys_cpu_present_map bit AFTER check for allowed
number of processors
- add checking for APIC valid version in 64bit mode
(mostly not needed but added for merging purpose)
- add apic_version definition for 64bit mode which
is used now
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- just #ifdef added
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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We use 32bit code former for 64bit
mode since it's much better implementation
and easier to merge.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Rearrange functions and comments to find differences
easier.
Also use apic_printk in setup_boot_APIC_clock for
64bit mode.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- Remove redundant masking of APIC_LVTTHMR register in apic_32.c
- Add masking of APIC_LVTTHMR register to apic_64.c. We use a bit
complicated #ifdef here: CONFIG_X86_MCE_P4THERMAL is 32bit specific
and X86_MCE_INTEL is 64bit specific so the appropriate config variable
will be set by Kconfig.
- the APIC_ESR register clearing in apic_64.c now uses not straightforward
way but this is allowed tradeoff.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- remove redundant read of APIC_LVR register in 64bit mode
- APIC is always integrated for 64bit mode so
gcc will eliminate lapic_is_integrated call
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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No changes on binary level
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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We are able to use clock_event_device as it's done in
64bit apic code so lets get rid of local_apic_timer_verify_ok
variable.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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There is no need to clear APIC twice since
disable_local_APIC will clear it anyway.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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To be able to unify this function we RE-introduce
APIC_DIVISOR for 64bit mode. This snipped was eliminated
in some time ago in a sake of clenup but now we need it
again since it allow up to get rid of #ifdef(s).
And lapic_is_integrated call is added in apic_64.c but
since we always have APIC integrated on 64bit cpu compiler
will ignore this call.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Get rid of local_apic_timer_disabled and use disable_apic_timer instead.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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