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cpuidle-haltpoll: disable host side polling when kvm virtualized
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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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,8 @@ | ||
/* SPDX-License-Identifier: GPL-2.0 */ | ||
#ifndef _ARCH_HALTPOLL_H | ||
#define _ARCH_HALTPOLL_H | ||
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void arch_haltpoll_enable(void); | ||
void arch_haltpoll_disable(void); | ||
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#endif |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,16 @@ | ||
/* SPDX-License-Identifier: GPL-2.0 */ | ||
#ifndef _CPUIDLE_HALTPOLL_H | ||
#define _CPUIDLE_HALTPOLL_H | ||
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#ifdef CONFIG_ARCH_CPUIDLE_HALTPOLL | ||
#include <asm/cpuidle_haltpoll.h> | ||
#else | ||
static inline void arch_haltpoll_enable(void) | ||
{ | ||
} | ||
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static inline void arch_haltpoll_disable(void) | ||
{ | ||
} | ||
#endif | ||
#endif |