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

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