From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org, Mark Brown <broonie@kernel.org>
Subject: [PATCH] arm64/idreg: Don't disable SME when disabling SME
Date: Thu, 16 Mar 2023 15:19:20 +0000 [thread overview]
Message-ID: <20230315-arm64-override-sve-sme-v1-1-3514ad657548@kernel.org> (raw)
SVE and SME are separate features which can be implemented without each
other but currently if the user specifies arm64.nosve then we disable SME
as well as SVE. There is already a separate override for SME so remove the
implicit disablement from the SVE override.
One usecase for this would be testing SME only support on a system which
implements both SVE and SME.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/kernel/idreg-override.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c
index d833d78a7f31..9d8edeb6aa46 100644
--- a/arch/arm64/kernel/idreg-override.c
+++ b/arch/arm64/kernel/idreg-override.c
@@ -167,7 +167,7 @@ static const struct {
} aliases[] __initconst = {
{ "kvm-arm.mode=nvhe", "id_aa64mmfr1.vh=0" },
{ "kvm-arm.mode=protected", "id_aa64mmfr1.vh=0" },
- { "arm64.nosve", "id_aa64pfr0.sve=0 id_aa64pfr1.sme=0" },
+ { "arm64.nosve", "id_aa64pfr0.sve=0" },
{ "arm64.nosme", "id_aa64pfr1.sme=0" },
{ "arm64.nobti", "id_aa64pfr1.bt=0" },
{ "arm64.nopauth",
---
base-commit: eeac8ede17557680855031c6f305ece2378af326
change-id: 20230315-arm64-override-sve-sme-b65f8dbbbcbe
Best regards,
--
Mark Brown <broonie@kernel.org>
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next reply other threads:[~2023-03-16 15:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-16 15:19 Mark Brown [this message]
2023-03-16 15:32 ` [PATCH] arm64/idreg: Don't disable SME when disabling SME Joey Gouly
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