cpuidle-haltpoll: disable host side polling when kvm virtualized

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When performing guest side polling, it is not necessary to
also perform host side polling.

So disable host side polling, via the new MSR interface,
when loading cpuidle-haltpoll driver.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Marcelo Tosatti 2019-07-03 20:51:29 -03:00 • committed by Rafael J. Wysocki

parent 2cffe9f6b9

commit a1c4423b02

5 changed files with 81 additions and 1 deletions

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7

arch/x86/Kconfig

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8

arch/x86/include/asm/cpuidle_haltpoll.h

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42

arch/x86/kernel/kvm.c

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9

drivers/cpuidle/cpuidle-haltpoll.c

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16

include/linux/cpuidle_haltpoll.h

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