AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/x86/kernel/cpu/cpufreq
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Stephan Diestelhorst c6e8256a7b x86, cpufreq: fix Speedfreq-SMI call that clobbers ECX 
I have found that using SMI to change the cpu's frequency on my DELL
Latitude L400 clobbers the ECX register in speedstep_set_state, causing
unneccessary retries because the "state" variable has changed silently (GCC
assumes it is still present in ECX).

play safe and avoid gcc caching any register across IO port accesses
that trigger SMIs.

Signed-off by: <Stephan.Diestelhorst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-26 22:23:40 +01:00
..
acpi-cpufreq.c x86: change NR_CPUS arrays in acpi-cpufreq 2008-01-30 13:33:12 +01:00
cpufreq-nforce2.c spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
e_powersaver.c [CPUFREQ] Remove debugging message from e_powersaver 2008-03-05 14:45:31 -05:00
elanfreq.c x86: convert cpuinfo_x86 array to a per_cpu array 2007-10-19 20:35:04 +02:00
gx-suspmod.c [CPUFREQ] gx-suspmod.c: use boot_cpu_data instead of current_cpu_data 2008-02-06 22:57:58 -05:00
Kconfig [CPUFREQ] Remove pointless Kconfig dependancy 2008-02-06 22:57:57 -05:00
longhaul.c x86: remove unneded casts 2008-01-30 13:33:23 +01:00
longhaul.h i386: move kernel/cpu/cpufreq 2007-10-11 11:16:27 +02:00
longrun.c x86: convert cpuinfo_x86 array to a per_cpu array 2007-10-19 20:35:04 +02:00
Makefile i386: move kernel/cpu/cpufreq 2007-10-11 11:16:27 +02:00
p4-clockmod.c x86: convert cpuinfo_x86 array to a per_cpu array 2007-10-19 20:35:04 +02:00
powernow-k6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-10-19 20:36:17 -07:00
powernow-k7.c [CPUFREQ] arch/x86: Add missing "space" 2008-02-06 22:57:57 -05:00
powernow-k7.h i386: move kernel/cpu/cpufreq 2007-10-11 11:16:27 +02:00
powernow-k8.c [CPUFREQ] Fix sparse warning in powernow-k8 2008-02-06 22:57:59 -05:00
powernow-k8.h [CPUFREQ] Powernow-k8: Update to support the latest Turion processors 2008-02-06 22:57:58 -05:00
sc520_freq.c x86: convert cpuinfo_x86 array to a per_cpu array 2007-10-19 20:35:04 +02:00
speedstep-centrino.c x86: convert cpuinfo_x86 array to a per_cpu array 2007-10-19 20:35:04 +02:00
speedstep-ich.c Convert cpu_sibling_map to be a per cpu variable 2007-10-16 09:42:50 -07:00
speedstep-lib.c Revert "speedstep-lib.c: fix frequency multiplier for Pentium4 models 0&1" 2007-11-20 14:20:21 -05:00
speedstep-lib.h i386: move kernel/cpu/cpufreq 2007-10-11 11:16:27 +02:00
speedstep-smi.c x86, cpufreq: fix Speedfreq-SMI call that clobbers ECX 2008-03-26 22:23:40 +01:00