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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>
Subject: [PATCH 6/8] ARM: Make CONFIG_CPU_V7 valid for 32bit ARMv8 implementations
Date: Thu, 26 Jan 2023 15:44:42 -0500	[thread overview]
Message-ID: <20230126204444.2204061-7-zalbassam@google.com> (raw)
In-Reply-To: <20230126204444.2204061-1-zalbassam@google.com>

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

ARMv8 is a superset of ARMv7, and all the ARMv8 features are
discoverable with a set of ID registers. It means that we can
use CPU_V7 to guard ARMv8 features at compile time.

This commit simply amends the CPU_V7 configuration symbol comment
to reflect that CPU_V7 also covers ARMv8.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Zaid Al-Bassam <zalbassam@google.com>
---
 arch/arm/mm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index e949e84a2dec..b77f4a0d9072 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -403,7 +403,7 @@ config CPU_V6K
 	select CPU_THUMB_CAPABLE
 	select CPU_TLB_V6 if MMU
 
-# ARMv7
+# ARMv7 and ARMv8 architectures
 config CPU_V7
 	bool
 	select CPU_32v6K
-- 
2.39.0.246.g2a6d74b583-goog


WARNING: multiple messages have this Message-ID (diff)
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>
Subject: [PATCH 6/8] ARM: Make CONFIG_CPU_V7 valid for 32bit ARMv8 implementations
Date: Thu, 26 Jan 2023 15:44:42 -0500	[thread overview]
Message-ID: <20230126204444.2204061-7-zalbassam@google.com> (raw)
In-Reply-To: <20230126204444.2204061-1-zalbassam@google.com>

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

ARMv8 is a superset of ARMv7, and all the ARMv8 features are
discoverable with a set of ID registers. It means that we can
use CPU_V7 to guard ARMv8 features at compile time.

This commit simply amends the CPU_V7 configuration symbol comment
to reflect that CPU_V7 also covers ARMv8.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Zaid Al-Bassam <zalbassam@google.com>
---
 arch/arm/mm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index e949e84a2dec..b77f4a0d9072 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -403,7 +403,7 @@ config CPU_V6K
 	select CPU_THUMB_CAPABLE
 	select CPU_TLB_V6 if MMU
 
-# ARMv7
+# ARMv7 and ARMv8 architectures
 config CPU_V7
 	bool
 	select CPU_32v6K
-- 
2.39.0.246.g2a6d74b583-goog


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  parent reply	other threads:[~2023-01-26 20:45 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-26 20:44 [PATCH 0/8] perf: arm: Make PMUv3 driver available for aarch32 Zaid Al-Bassam
2023-01-26 20:44 ` Zaid Al-Bassam
2023-01-26 20:44 ` [PATCH 1/8] arm64: perf: Move PMUv3 driver to drivers/perf Zaid Al-Bassam
2023-01-26 20:44   ` Zaid Al-Bassam
2023-01-26 20:44 ` [PATCH 2/8] arm64: perf: Abstract system register accesses away Zaid Al-Bassam
2023-01-26 20:44   ` Zaid Al-Bassam
2023-01-26 20:44 ` [PATCH 3/8] perf: pmuv3: Add common defines for the PMU version Zaid Al-Bassam
2023-01-26 20:44   ` Zaid Al-Bassam
2023-02-08 11:20   ` Marc Zyngier
2023-02-08 11:20     ` Marc Zyngier
2023-01-26 20:44 ` [PATCH 4/8] perf: pmuv3: Add wrappers for KVM accesses Zaid Al-Bassam
2023-01-26 20:44   ` Zaid Al-Bassam
2023-02-08 11:24   ` Marc Zyngier
2023-02-08 11:24     ` Marc Zyngier
2023-01-26 20:44 ` [PATCH 5/8] perf: pmuv3: Change GENMASK to GENMASK_ULL Zaid Al-Bassam
2023-01-26 20:44   ` Zaid Al-Bassam
2023-02-08 11:30   ` Marc Zyngier
2023-02-08 11:30     ` Marc Zyngier
2023-01-26 20:44 ` Zaid Al-Bassam [this message]
2023-01-26 20:44   ` [PATCH 6/8] ARM: Make CONFIG_CPU_V7 valid for 32bit ARMv8 implementations Zaid Al-Bassam
2023-01-26 20:44 ` [PATCH 7/8] ARM: perf: Allow the use of the PMUv3 driver on 32bit ARM Zaid Al-Bassam
2023-01-26 20:44   ` Zaid Al-Bassam
2023-02-08 12:51   ` Marc Zyngier
2023-02-08 12:51     ` Marc Zyngier
2023-01-26 20:44 ` [PATCH 8/8] ARM: mach-virt: Select PMUv3 driver by default Zaid Al-Bassam
2023-01-26 20:44   ` Zaid Al-Bassam
2023-03-02 13:57   ` kernel test robot
2023-02-08 16:40 ` [PATCH 0/8] perf: arm: Make PMUv3 driver available for aarch32 Marc Zyngier
2023-02-08 16:40   ` Marc Zyngier
2023-02-09  0:15   ` Florian Fainelli
2023-02-09  0:15     ` Florian Fainelli
2023-02-10 16:58   ` Zaid Al-Bassam
2023-02-10 16:58     ` Zaid Al-Bassam

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