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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,
	f.fainelli@gmail.com
Cc: Marc Zyngier <marc.zyngier@arm.com>,
	Zaid Al-Bassam <zalbassam@google.com>
Subject: [PATCH v4 6/8] ARM: Make CONFIG_CPU_V7 valid for 32bit ARMv8 implementations
Date: Fri, 17 Mar 2023 15:50:25 -0400	[thread overview]
Message-ID: <20230317195027.3746949-7-zalbassam@google.com> (raw)
In-Reply-To: <20230317195027.3746949-1-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>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 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 8e2d75624f5c..dda78a69efba 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
-- 
2.40.0.rc2.332.ga46443480c-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,
	f.fainelli@gmail.com
Cc: Marc Zyngier <marc.zyngier@arm.com>,
	Zaid Al-Bassam <zalbassam@google.com>
Subject: [PATCH v4 6/8] ARM: Make CONFIG_CPU_V7 valid for 32bit ARMv8 implementations
Date: Fri, 17 Mar 2023 15:50:25 -0400	[thread overview]
Message-ID: <20230317195027.3746949-7-zalbassam@google.com> (raw)
In-Reply-To: <20230317195027.3746949-1-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>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 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 8e2d75624f5c..dda78a69efba 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
-- 
2.40.0.rc2.332.ga46443480c-goog


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2023-03-17 19:51 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-17 19:50 [PATCH v4 0/8] perf: arm: Make PMUv3 driver available for aarch32 Zaid Al-Bassam
2023-03-17 19:50 ` Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 1/8] arm64: perf: Move PMUv3 driver to drivers/perf Zaid Al-Bassam
2023-03-17 19:50   ` Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 2/8] arm64: perf: Abstract system register accesses away Zaid Al-Bassam
2023-03-17 19:50   ` Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 3/8] perf: pmuv3: Abstract PMU version checks Zaid Al-Bassam
2023-03-17 19:50   ` Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 4/8] perf: pmuv3: Move inclusion of kvm_host.h to the arch-specific helper Zaid Al-Bassam
2023-03-17 19:50   ` Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 5/8] perf: pmuv3: Change GENMASK to GENMASK_ULL Zaid Al-Bassam
2023-03-17 19:50   ` Zaid Al-Bassam
2023-03-17 19:50 ` Zaid Al-Bassam [this message]
2023-03-17 19:50   ` [PATCH v4 6/8] ARM: Make CONFIG_CPU_V7 valid for 32bit ARMv8 implementations Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 7/8] ARM: perf: Allow the use of the PMUv3 driver on 32bit ARM Zaid Al-Bassam
2023-03-17 19:50   ` Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 8/8] ARM: mach-virt: Select PMUv3 driver by default Zaid Al-Bassam
2023-03-17 19:50   ` Zaid Al-Bassam
2023-03-18 10:02 ` [PATCH v4 0/8] perf: arm: Make PMUv3 driver available for aarch32 Marc Zyngier
2023-03-18 10:02   ` Marc Zyngier
2023-03-24 13:56   ` Mark Rutland
2023-03-24 13:56     ` Mark Rutland
2023-03-24 18:03     ` Will Deacon
2023-03-24 18:03       ` Will Deacon
2023-03-21 16:44 ` Florian Fainelli
2023-03-21 16:44   ` Florian Fainelli
2023-03-27 15:01 ` Will Deacon
2023-03-27 15:01   ` Will Deacon

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