timesourcefor nohz, but we don't check for that case because most modern
systems have several reliable hardware timesources.
John suggested that we turn off nohz unless a usable hardware timesource is
present.
- Matthew Whitehead tedheads...@gmail.com
--
To unsubscribe from this list: send the line
the
system goes and leaves idle relative to the jiffies increment.
Provide a tick_nohz_active indicator and let RCU and the accounting
code use this instead of tick_nohz_enable.
Reported-by: Matthew Whitehead tedheads...@gmail.com
Matthew, can you test this patch to make sure
the early processors.
This code was based on similar code in the gcc package.
Signed-off-by: Matthew Whitehead <tedheads...@gmail.com>
---
tools/perf/arch/x86/util/header.c | 51 +++
tools/perf/util/header.h | 2 ++
2 files changed, 53 insertion
the early processors.
v1: cpuid detection code based on GCC gcc/config/i386/cpuid.h
https://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=gcc/config/i386/cpuid.h;hb=HEAD
v2: cpuid detection code based on Linux kernel arch/x86/kernel/cpu/common.c
Signed-off-by: Matthew Whitehead <tedheads...@gmail.co
6 CPU, but only detected an i586 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i686-specific instructions.
Signed-off-by: Matthew Whitehead <tedheads...@gmail.com>
---
arch/x86/Kconfig.cpu | 2 +-
1 file changed, 1 insertion(+), 1 deletio
uires an i586 CPU, but only detected an i486 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i586-specific instructions.
The M586 cpu is not in this list because at least the Cyrix 5x86
lacks this instruction, and perhaps others.
Signed-off-b
i586-class machines also lack support for Physical Address Extension (PAE),
so add them to the exclusion list
Signed-off-by: Matthew Whitehead <tedheads...@gmail.com>
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig b/arch/x86/K
6 CPU, but only detected an i586 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i686-specific instructions.
Signed-off-by: Matthew Whitehead <tedheads...@gmail.com>
---
arch/x86/Kconfig.cpu | 2 +-
1 file changed, 1 insertion(+), 1 deletio
i586-class machines also lack support for Physical Address Extension (PAE),
so add them to the exclusion list
Signed-off-by: Matthew Whitehead <tedheads...@gmail.com>
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig b/arch/x86/K
uires an i586 CPU, but only detected an i486 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i586-specific instructions.
The M586 cpu is not in this list because at least the Cyrix 5x86
lacks this instruction, and perhaps others.
Signed-off-b
early_init_amd() is called on all AMD processors, both 64 and 32 bit.
Presently 32 bit processors get the X86_FEATURE_VMMCALL feature set, which
they do not support. Add conditionals to restrict it to 64 bit processors.
Cc: Paolo Bonzini
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu
early_identify_cpu() does not know that the call to
identify_cpu_without_cpuid() actually enables the cpuid instruction in the
odd Cyrix case, and it turns X86_FEATURE_CPUID off after it has just been
enabled on the processor.
This was tested on actual Cyrix hardware.
Signed-off-by: Matthew Whitehead
x23);
* } while (0);
The new macros fix this problem, so we use them instead.
Reviewed-by: Andy Lutomirski
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu/cyrix.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/kernel/cpu/cyrix.c
in
the
calling sequence so that cpuid is first enabled, and then check a second
time to see if the feature has now been activated.
Reviewed-by: Andy Lutomirski
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu/common.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86
On power up, the cpuid instruction is disabled on Cyrix 6x86 and 6x86L
processors and needs to be enabled. This patchset enables it.
Matthew Whitehead (2):
x86/cpu: Use correct macros for Cyrix calls
x86/cpu: Change query logic so cpuid is enabled before testing
arch/x86/kernel/cpu/common.c
timesourcefor nohz, but we don't check for that case because most modern
systems have several reliable hardware timesources.
John suggested that we turn off nohz unless a usable hardware timesource is
present.
- Matthew Whitehead
--
To unsubscribe from this list: send the line "unsubscribe
as a clocksource which explains why the "fine"
> > grained accounting went into lala land, because it depends on when the
> > system goes and leaves idle relative to the jiffies increment.
> >
> > Provide a tick_nohz_active indicator and let RCU and the accounting
6 CPU, but only detected an i586 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i686-specific instructions.
Signed-off-by: Matthew Whitehead
---
arch/x86/Kconfig.cpu | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kco
i586-class machines also lack support for Physical Address Extension (PAE),
so add them to the exclusion list
Signed-off-by: Matthew Whitehead
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 72d5149..89bf3fa
uires an i586 CPU, but only detected an i486 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i586-specific instructions.
The M586 cpu is not in this list because at least the Cyrix 5x86
lacks this instruction, and perhaps others.
Signed-off-b
the early processors.
This code was based on similar code in the gcc package.
Signed-off-by: Matthew Whitehead
---
tools/perf/arch/x86/util/header.c | 51 +++
tools/perf/util/header.h | 2 ++
2 files changed, 53 insertions(+)
diff --git a/tools/perf/arc
the early processors.
v1: cpuid detection code based on GCC gcc/config/i386/cpuid.h
https://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=gcc/config/i386/cpuid.h;hb=HEAD
v2: cpuid detection code based on Linux kernel arch/x86/kernel/cpu/common.c
Signed-off-by: Matthew Whitehead
---
tools/perf/arc
i586-class machines also lack support for Physical Address Extension (PAE),
so add them to the exclusion list
Signed-off-by: Matthew Whitehead
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 423e4b6..c45fe6d
uires an i586 CPU, but only detected an i486 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i586-specific instructions.
The M586 cpu is not in this list because at least the Cyrix 5x86
lacks this instruction, and perhaps others.
Signed-off-b
6 CPU, but only detected an i586 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i686-specific instructions.
Signed-off-by: Matthew Whitehead
---
arch/x86/Kconfig.cpu | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kco
early_init_amd() is called on all AMD processors, both 64 and 32 bit.
Presently 32 bit processors get the X86_FEATURE_VMMCALL feature set, which
they do not support. Add conditionals to restrict it to 64 bit processors.
Cc: Paolo Bonzini
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu
early_identify_cpu() does not know that the call to
identify_cpu_without_cpuid() actually enables the cpuid instruction in the
odd Cyrix case, and it turns X86_FEATURE_CPUID off after it has just been
enabled on the processor.
This was tested on actual Cyrix hardware.
Signed-off-by: Matthew Whitehead
On power up, the cpuid instruction is disabled on Cyrix 6x86 and 6x86L
processors and needs to be enabled. This patchset enables it.
Matthew Whitehead (2):
x86/cpu: Use correct macros for Cyrix calls
x86/cpu: Change query logic so cpuid is enabled before testing
arch/x86/kernel/cpu/common.c
x23);
* } while (0);
The new macros fix this problem, so we use them instead.
Reviewed-by: Andy Lutomirski
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu/cyrix.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/kernel/cpu/cyrix.c
in
the
calling sequence so that cpuid is first enabled, and then check a second
time to see if the feature has now been activated.
Reviewed-by: Andy Lutomirski
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu/common.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86
Replace the incorrect Cyrix-specific macro calls with the correct
setCx86() and getCx86() calls. Also remove the unused setCx86_old(),
getCx86_old() and their related comments in the code.
Matthew Whitehead (2):
x86/CPU: Use correct macros for Cyrix calls on Geode processors
x86/CPU: Remove
x23);
* } while (0);
The new macros fix this problem, so use them instead. Tested on an
actual Geode processor.
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu/cyrix.c | 14 +++---
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/ker
The getCx86_old() and setCx86_old() macros have been replaced with
correctly working getCx86() and setCx86(), so remove these unused macros.
Signed-off-by: Matthew Whitehead
---
arch/x86/include/asm/processor-cyrix.h | 21 -
1 file changed, 21 deletions(-)
diff --git a/arch
x23);
* } while (0);
The new macros fix this problem, so use them instead. Tested on an
actual Geode processor.
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu/cyrix.c | 14 +++---
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/ker
x23);
* } while (0);
The new macros fix this problem, so use them instead. Tested on an
actual Geode processor.
Signed-off-by: Matthew Whitehead
---
arch/x86/kernel/cpu/cyrix.c | 14 +++---
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/ker
Replace the incorrect Cyrix-specific macro calls with the correct
setCx86() and getCx86() calls. Also remove the unused setCx86_old(),
getCx86_old() and their related comments in the code.
Matthew Whitehead (2):
x86/CPU: Use correct macros for Cyrix calls on Geode processors
x86/CPU: Remove
The getCx86_old() and setCx86_old() macros have been replaced with
correctly working getCx86() and setCx86(), so remove these unused macros.
Signed-off-by: Matthew Whitehead
---
arch/x86/include/asm/processor-cyrix.h | 21 -
1 file changed, 21 deletions(-)
diff --git a/arch
uot;. I tested part of Andy's patch and
it resolved the failure.
The 3.16 LTS kernel does not have the tools/testing/selftests/x86/test_vdso.c
code, so a partial patch is indicated, unless Andy wants to provide that.
Kindly backport to 3.16 LTS series.
reported-by: Matthew Whitehead
tested-by
Commit-ID: 25d76ac888216c369dea91768764728b83769799
Gitweb: https://git.kernel.org/tip/25d76ac888216c369dea91768764728b83769799
Author: Matthew Whitehead <tedheads...@gmail.com>
AuthorDate: Thu, 15 Feb 2018 11:54:56 -0500
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate:
Commit-ID: 69b8d3fcabdc81d9efd82b4a506c8279cbaba692
Gitweb: https://git.kernel.org/tip/69b8d3fcabdc81d9efd82b4a506c8279cbaba692
Author: Matthew Whitehead <tedheads...@gmail.com>
AuthorDate: Thu, 15 Feb 2018 11:54:55 -0500
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate:
Commit-ID: f960cfd12650fad43c1cde07a1f7642cf2c57f97
Gitweb: https://git.kernel.org/tip/f960cfd12650fad43c1cde07a1f7642cf2c57f97
Author: Matthew Whitehead <tedheads...@gmail.com>
AuthorDate: Thu, 15 Feb 2018 11:54:54 -0500
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate:
Commit-ID: 03b099bdcdf7125d4a63dc9ddeefdd454e05123d
Gitweb: https://git.kernel.org/tip/03b099bdcdf7125d4a63dc9ddeefdd454e05123d
Author: Matthew Whitehead
AuthorDate: Fri, 21 Sep 2018 17:20:40 -0400
Committer: Borislav Petkov
CommitDate: Sat, 22 Sep 2018 11:46:56 +0200
x86/CPU: Use
Commit-ID: 2893cc8ff892fa74972d8dc0e1d0dc65116daaa3
Gitweb: https://git.kernel.org/tip/2893cc8ff892fa74972d8dc0e1d0dc65116daaa3
Author: Matthew Whitehead
AuthorDate: Fri, 21 Sep 2018 17:20:41 -0400
Committer: Borislav Petkov
CommitDate: Sat, 22 Sep 2018 11:47:39 +0200
x86/CPU: Change
Commit-ID: f960cfd12650fad43c1cde07a1f7642cf2c57f97
Gitweb: https://git.kernel.org/tip/f960cfd12650fad43c1cde07a1f7642cf2c57f97
Author: Matthew Whitehead
AuthorDate: Thu, 15 Feb 2018 11:54:54 -0500
Committer: Ingo Molnar
CommitDate: Fri, 16 Feb 2018 10:36:39 +0100
x86/Kconfig: Add
Commit-ID: 69b8d3fcabdc81d9efd82b4a506c8279cbaba692
Gitweb: https://git.kernel.org/tip/69b8d3fcabdc81d9efd82b4a506c8279cbaba692
Author: Matthew Whitehead
AuthorDate: Thu, 15 Feb 2018 11:54:55 -0500
Committer: Ingo Molnar
CommitDate: Fri, 16 Feb 2018 10:36:39 +0100
x86/Kconfig: Exclude
Commit-ID: 25d76ac888216c369dea91768764728b83769799
Gitweb: https://git.kernel.org/tip/25d76ac888216c369dea91768764728b83769799
Author: Matthew Whitehead
AuthorDate: Thu, 15 Feb 2018 11:54:56 -0500
Committer: Ingo Molnar
CommitDate: Fri, 16 Feb 2018 10:36:39 +0100
x86/Kconfig
Commit-ID: 03b099bdcdf7125d4a63dc9ddeefdd454e05123d
Gitweb: https://git.kernel.org/tip/03b099bdcdf7125d4a63dc9ddeefdd454e05123d
Author: Matthew Whitehead
AuthorDate: Fri, 21 Sep 2018 17:20:40 -0400
Committer: Borislav Petkov
CommitDate: Sat, 22 Sep 2018 11:46:56 +0200
x86/CPU: Use
Commit-ID: 2893cc8ff892fa74972d8dc0e1d0dc65116daaa3
Gitweb: https://git.kernel.org/tip/2893cc8ff892fa74972d8dc0e1d0dc65116daaa3
Author: Matthew Whitehead
AuthorDate: Fri, 21 Sep 2018 17:20:41 -0400
Committer: Borislav Petkov
CommitDate: Sat, 22 Sep 2018 11:47:39 +0200
x86/CPU: Change
Commit-ID: 18fb053f9b827bd98cfc64f2a35df8ab19745a1d
Gitweb: https://git.kernel.org/tip/18fb053f9b827bd98cfc64f2a35df8ab19745a1d
Author: Matthew Whitehead
AuthorDate: Thu, 14 Mar 2019 16:46:00 -0400
Committer: Thomas Gleixner
CommitDate: Thu, 21 Mar 2019 12:28:50 +0100
x86/cpu/cyrix
Commit-ID: 0f4d3aa761b71cd6984330baca1e18bf0590e441
Gitweb: https://git.kernel.org/tip/0f4d3aa761b71cd6984330baca1e18bf0590e441
Author: Matthew Whitehead
AuthorDate: Thu, 14 Mar 2019 16:46:01 -0400
Committer: Thomas Gleixner
CommitDate: Thu, 21 Mar 2019 12:28:50 +0100
x86/cpu/cyrix
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