Date:   Thu, 26 Jan 2023 15:44:44 -0500
In-Reply-To: <20230126204444.2204061-1-zalbassam@google.com>
Mime-Version: 1.0
References: <20230126204444.2204061-1-zalbassam@google.com>
Message-ID: <20230126204444.2204061-9-zalbassam@google.com>
Subject: [PATCH 8/8] ARM: mach-virt: Select PMUv3 driver by default
From:   Zaid Al-Bassam <zalbassam@google.com>
To:     Jesus Sanchez-Palencia <jesussanp@google.com>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Marc Zyngier <maz@kernel.org>,
        James Morse <james.morse@arm.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Oliver Upton <oliver.upton@linux.dev>,
        Zenghui Yu <yuzenghui@huawei.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-perf-users@vger.kernel.org, kvmarm@lists.linux.dev,
        kvmarm@lists.cs.columbia.edu
Cc:     Marc Zyngier <marc.zyngier@arm.com>,
        Zaid Al-Bassam <zalbassam@google.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

From: Marc Zyngier <marc.zyngier@arm.com>

Since 32bit guests are not unlikely to run on an ARMv8 host,
let's select the PMUv3 driver, which allows the PMU to be used
on such systems.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Zaid Al-Bassam <zalbassam@google.com>
---
 arch/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 137f89ad0521..3802997fb36e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -400,6 +400,7 @@ config ARCH_VIRT
 	select ARM_GIC_V3
 	select ARM_GIC_V3_ITS if PCI
 	select ARM_PSCI
+	select ARM_PMUV3 if PERF_EVENTS
 	select HAVE_ARM_ARCH_TIMER
 
 config ARCH_AIROHA
-- 
2.39.0.246.g2a6d74b583-goog