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Message-Id: <1691581193-8416-8-git-send-email-mihai.carabas@oracle.com>
Date: Wed, 9 Aug 2023 14:39:41 +0300
From: Mihai Carabas <mihai.carabas@...cle.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Joao Martins <joao.m.martins@...cle.com>,
Mihai Carabas <mihai.carabas@...cle.com>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>,
Paolo Bonzini <pbonzini@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Kees Cook <keescook@...omium.org>,
Peter Zijlstra <peterz@...radead.org>,
Petr Mladek <pmladek@...e.com>,
Ard Biesheuvel <ardb@...nel.org>,
Sami Tolvanen <samitolvanen@...gle.com>,
Nicholas Piggin <npiggin@...il.com>,
Juerg Haefliger <juerg.haefliger@...onical.com>,
Mickaël Salaün <mic@...ikod.net>,
Arnd Bergmann <arnd@...db.de>,
Ankur Arora <ankur.a.arora@...cle.com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
kvm@...r.kernel.org, linux-pm@...r.kernel.org
Subject: [PATCH 7/7] cpuidle-haltpoll: ARM64 support
From: Joao Martins <joao.m.martins@...cle.com>
To test whether it's a guest or not for the default cases, the haltpoll
driver uses the kvm_para* helpers to find out if it's a guest or not.
ARM64 doesn't have or defined any of these, so it remains disabled on
the default. Although it allows to be force-loaded.
Signed-off-by: Joao Martins <joao.m.martins@...cle.com>
Signed-off-by: Mihai Carabas <mihai.carabas@...cle.com>
---
drivers/cpuidle/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig
index cac5997dca50..067927eda466 100644
--- a/drivers/cpuidle/Kconfig
+++ b/drivers/cpuidle/Kconfig
@@ -35,7 +35,7 @@ config CPU_IDLE_GOV_TEO
config CPU_IDLE_GOV_HALTPOLL
bool "Haltpoll governor (for virtualized systems)"
- depends on KVM_GUEST
+ depends on (X86 && KVM_GUEST) || ARM64
help
This governor implements haltpoll idle state selection, to be
used in conjunction with the haltpoll cpuidle driver, allowing
@@ -73,7 +73,7 @@ endmenu
config HALTPOLL_CPUIDLE
tristate "Halt poll cpuidle driver"
- depends on X86 && KVM_GUEST
+ depends on (X86 && KVM_GUEST) || ARM64
select CPU_IDLE_GOV_HALTPOLL
default y
help
--
1.8.3.1
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