From: Mihai Carabas <mihai.carabas@oracle.com>
To: linux-arm-kernel@lists.infradead.org
Cc: kvm@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, catalin.marinas@arm.com,
will@kernel.org, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, x86@kernel.org, hpa@zytor.com, pbonzini@redhat.com,
wanpengli@tencent.com, vkuznets@redhat.com, rafael@kernel.org,
daniel.lezcano@linaro.org, akpm@linux-foundation.org,
pmladek@suse.com, peterz@infradead.org, dianders@chromium.org,
npiggin@gmail.com, rick.p.edgecombe@intel.com,
joao.m.martins@oracle.com, juerg.haefliger@canonical.com,
mic@digikod.net, mihai.carabas@oracle.com, arnd@arndb.de,
ankur.a.arora@oracle.com
Subject: [PATCH 6/7] cpuidle-haltpoll: ARM64 support
Date: Mon, 20 Nov 2023 16:01:37 +0200 [thread overview]
Message-ID: <1700488898-12431-7-git-send-email-mihai.carabas@oracle.com> (raw)
In-Reply-To: <1700488898-12431-1-git-send-email-mihai.carabas@oracle.com>
From: Joao Martins <joao.m.martins@oracle.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@oracle.com>
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.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
next prev parent reply other threads:[~2023-11-20 15:16 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-20 14:01 [PATCH v2] Enable haltpoll for arm64 Mihai Carabas
2023-11-20 14:01 ` [PATCH 1/7] x86: Move ARCH_HAS_CPU_RELAX to arch Mihai Carabas
2023-11-27 14:44 ` Petr Mladek
2023-11-28 14:09 ` Mihai Carabas
2023-11-20 14:01 ` [PATCH 2/7] x86/kvm: Move haltpoll_want() to be arch defined Mihai Carabas
2023-11-29 20:55 ` Rafael J. Wysocki
2023-11-20 14:01 ` [PATCH 3/7] governors/haltpoll: Drop kvm_para_available() check Mihai Carabas
2023-11-20 14:01 ` [PATCH 4/7] arm64: Select ARCH_HAS_CPU_RELAX Mihai Carabas
2023-11-20 14:01 ` [PATCH 5/7] arm64: Define TIF_POLLING_NRFLAG Mihai Carabas
2023-11-20 14:01 ` Mihai Carabas [this message]
2023-11-20 14:01 ` [PATCH 7/7] cpuidle/poll_state: replace cpu_relax with smp_cond_load_relaxed Mihai Carabas
2023-11-22 20:51 ` Christoph Lameter
2023-11-22 21:33 ` Mihai Carabas
2023-11-27 20:17 ` Christoph Lameter (Ampere)
2023-12-01 6:59 ` Ankur Arora
2023-12-11 11:46 ` Will Deacon
2024-01-28 21:22 ` Mihai Carabas
2024-01-29 18:15 ` Will Deacon
2024-02-05 12:28 ` Mihai Carabas
2024-02-05 19:33 ` Ankur Arora
2024-01-17 21:19 ` [PATCH v2] Enable haltpoll for arm64 Christoph Lameter (Ampere)
2024-01-25 14:39 ` Mihai Carabas
2024-01-25 15:16 ` Rafael J. Wysocki
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