linux_dsm_epyc7002/arch/x86
Doug Smythies 8e2f3bce05 cpufreq: x86: Disable interrupts during MSRs reading
According to Intel 64 and IA-32 Architectures SDM, Volume 3,
Chapter 14.2, "Software needs to exercise care to avoid delays
between the two RDMSRs (for example interrupts)".

So, disable interrupts during reading MSRs IA32_APERF and IA32_MPERF.

See also: commit 4ab60c3f32 (cpufreq: intel_pstate: Disable
interrupts during MSRs reading).

Signed-off-by: Doug Smythies <dsmythies@telus.net>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-11 01:27:41 +02:00
..
boot x86/boot: Disable the address-of-packed-member compiler warning 2017-07-28 08:39:08 +02:00
configs x86/defconfig: Remove stale, old Kconfig options 2017-07-20 10:28:19 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-07-14 22:49:50 -07:00
entry x86: irq: Define a global vector for nested posted interrupts 2017-07-26 18:57:45 +02:00
events perf/x86/intel/uncore: Fix missing marker for skx_uncore_cha_extra_regs 2017-07-24 11:13:18 +02:00
hyperv
ia32
include x86: irq: Define a global vector for nested posted interrupts 2017-07-26 18:57:45 +02:00
kernel cpufreq: x86: Disable interrupts during MSRs reading 2017-08-11 01:27:41 +02:00
kvm KVM: nVMX: Fix interrupt window request with "Acknowledge interrupt on exit" 2017-08-03 15:38:11 +02:00
lguest
lib include/linux/string.h: add the option of fortified string.h functions 2017-07-12 16:26:03 -07:00
math-emu x86/fpu/math-emu: Avoid bogus -Wint-in-bool-context warning 2017-07-20 10:46:24 +02:00
mm x86/mmap: properly account for stack randomization in mmap_base 2017-07-12 16:26:03 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-07-05 12:31:59 -07:00
oprofile
pci pci-v4.13-changes 2017-07-08 15:51:57 -07:00
platform x86/platform/uv/BAU: Disable BAU on single hub configurations 2017-07-21 09:56:25 +02:00
power x86/boot/e820: Introduce the bootloader provided e820_table_firmware[] table 2017-07-05 10:09:02 +02:00
purgatory
ras
realmode
tools
um Merge branch 'for-linus-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2017-07-15 10:49:33 -07:00
video
xen xen/x86: fix cpu hotplug 2017-07-23 08:13:11 +02:00
.gitignore
Kbuild
Kconfig include/linux/string.h: add the option of fortified string.h functions 2017-07-12 16:26:03 -07:00
Kconfig.cpu
Kconfig.debug x86/platform: Add PCI dependency for PUNIT_ATOM_DEBUG 2017-07-20 10:46:24 +02:00
Makefile Kbuild updates for v4.13 2017-07-07 14:09:24 -07:00
Makefile_32.cpu
Makefile.um