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From: <yee.lee@mediatek.com>
To: <linux-kernel@vger.kernel.org>
Cc: <nicholas.Tang@mediatek.com>, <Kuan-Ying.lee@mediatek.com>,
	<chinwen.chang@mediatek.com>, Yee Lee <yee.lee@mediatek.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Marc Zyngier <maz@kernel.org>,
	David Brazdil <dbrazdil@google.com>,
	Ard Biesheuvel <ardb@kernel.org>, Fuad Tabba <tabba@google.com>,
	"moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" 
	<linux-arm-kernel@lists.infradead.org>,
	"moderated list:ARM/Mediatek SoC support" 
	<linux-mediatek@lists.infradead.org>
Subject: [PATCH v2 1/1] arm64/cpufeature: Add arm64.nomte to override id-reg
Date: Thu, 29 Jul 2021 10:07:12 +0800	[thread overview]
Message-ID: <20210729020717.15142-2-yee.lee@mediatek.com> (raw)
In-Reply-To: <20210729020717.15142-1-yee.lee@mediatek.com>

From: Yee Lee <yee.lee@mediatek.com>

Add an alias, "arm64.nomte", to override id-reg and
suppress mte feature.

Suggested-by: Marc Zyngier <maz@kernel.org>
Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Yee Lee <yee.lee@mediatek.com>
---
 arch/arm64/kernel/idreg-override.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c
index 53a381a7f65d..d8e606fe3c21 100644
--- a/arch/arm64/kernel/idreg-override.c
+++ b/arch/arm64/kernel/idreg-override.c
@@ -54,6 +54,7 @@ static const struct ftr_set_desc pfr1 __initconst = {
 	.override	= &id_aa64pfr1_override,
 	.fields		= {
 	        { "bt", ID_AA64PFR1_BT_SHIFT },
+		{ "mte", ID_AA64PFR1_MTE_SHIFT},
 		{}
 	},
 };
@@ -100,6 +101,7 @@ static const struct {
 	{ "arm64.nopauth",
 	  "id_aa64isar1.gpi=0 id_aa64isar1.gpa=0 "
 	  "id_aa64isar1.api=0 id_aa64isar1.apa=0"	   },
+	{ "arm64.nomte",		"id_aa64pfr1.mte=0" },
 	{ "nokaslr",			"kaslr.disabled=1" },
 };
 
-- 
2.18.0


WARNING: multiple messages have this Message-ID (diff)
From: <yee.lee@mediatek.com>
To: <linux-kernel@vger.kernel.org>
Cc: <nicholas.Tang@mediatek.com>, <Kuan-Ying.lee@mediatek.com>,
	<chinwen.chang@mediatek.com>, Yee Lee <yee.lee@mediatek.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Marc Zyngier <maz@kernel.org>,
	David Brazdil <dbrazdil@google.com>,
	Ard Biesheuvel <ardb@kernel.org>, Fuad Tabba <tabba@google.com>,
	"moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)"
	<linux-arm-kernel@lists.infradead.org>,
	"moderated list:ARM/Mediatek SoC support"
	<linux-mediatek@lists.infradead.org>
Subject: [PATCH v2 1/1] arm64/cpufeature: Add arm64.nomte to override id-reg
Date: Thu, 29 Jul 2021 10:07:12 +0800	[thread overview]
Message-ID: <20210729020717.15142-2-yee.lee@mediatek.com> (raw)
In-Reply-To: <20210729020717.15142-1-yee.lee@mediatek.com>

From: Yee Lee <yee.lee@mediatek.com>

Add an alias, "arm64.nomte", to override id-reg and
suppress mte feature.

Suggested-by: Marc Zyngier <maz@kernel.org>
Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Yee Lee <yee.lee@mediatek.com>
---
 arch/arm64/kernel/idreg-override.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c
index 53a381a7f65d..d8e606fe3c21 100644
--- a/arch/arm64/kernel/idreg-override.c
+++ b/arch/arm64/kernel/idreg-override.c
@@ -54,6 +54,7 @@ static const struct ftr_set_desc pfr1 __initconst = {
 	.override	= &id_aa64pfr1_override,
 	.fields		= {
 	        { "bt", ID_AA64PFR1_BT_SHIFT },
+		{ "mte", ID_AA64PFR1_MTE_SHIFT},
 		{}
 	},
 };
@@ -100,6 +101,7 @@ static const struct {
 	{ "arm64.nopauth",
 	  "id_aa64isar1.gpi=0 id_aa64isar1.gpa=0 "
 	  "id_aa64isar1.api=0 id_aa64isar1.apa=0"	   },
+	{ "arm64.nomte",		"id_aa64pfr1.mte=0" },
 	{ "nokaslr",			"kaslr.disabled=1" },
 };
 
-- 
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: <yee.lee@mediatek.com>
To: <linux-kernel@vger.kernel.org>
Cc: <nicholas.Tang@mediatek.com>, <Kuan-Ying.lee@mediatek.com>,
	<chinwen.chang@mediatek.com>, Yee Lee <yee.lee@mediatek.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Marc Zyngier <maz@kernel.org>,
	David Brazdil <dbrazdil@google.com>,
	Ard Biesheuvel <ardb@kernel.org>, Fuad Tabba <tabba@google.com>,
	"moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)"
	<linux-arm-kernel@lists.infradead.org>,
	"moderated list:ARM/Mediatek SoC support"
	<linux-mediatek@lists.infradead.org>
Subject: [PATCH v2 1/1] arm64/cpufeature: Add arm64.nomte to override id-reg
Date: Thu, 29 Jul 2021 10:07:12 +0800	[thread overview]
Message-ID: <20210729020717.15142-2-yee.lee@mediatek.com> (raw)
In-Reply-To: <20210729020717.15142-1-yee.lee@mediatek.com>

From: Yee Lee <yee.lee@mediatek.com>

Add an alias, "arm64.nomte", to override id-reg and
suppress mte feature.

Suggested-by: Marc Zyngier <maz@kernel.org>
Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Yee Lee <yee.lee@mediatek.com>
---
 arch/arm64/kernel/idreg-override.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c
index 53a381a7f65d..d8e606fe3c21 100644
--- a/arch/arm64/kernel/idreg-override.c
+++ b/arch/arm64/kernel/idreg-override.c
@@ -54,6 +54,7 @@ static const struct ftr_set_desc pfr1 __initconst = {
 	.override	= &id_aa64pfr1_override,
 	.fields		= {
 	        { "bt", ID_AA64PFR1_BT_SHIFT },
+		{ "mte", ID_AA64PFR1_MTE_SHIFT},
 		{}
 	},
 };
@@ -100,6 +101,7 @@ static const struct {
 	{ "arm64.nopauth",
 	  "id_aa64isar1.gpi=0 id_aa64isar1.gpa=0 "
 	  "id_aa64isar1.api=0 id_aa64isar1.apa=0"	   },
+	{ "arm64.nomte",		"id_aa64pfr1.mte=0" },
 	{ "nokaslr",			"kaslr.disabled=1" },
 };
 
-- 
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2021-07-29  2:07 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-29  2:07 [PATCH v2 0/1] Add option to disable mte support yee.lee
2021-07-29  2:07 ` yee.lee
2021-07-29  2:07 ` yee.lee
2021-07-29  2:07 ` yee.lee [this message]
2021-07-29  2:07   ` [PATCH v2 1/1] arm64/cpufeature: Add arm64.nomte to override id-reg yee.lee
2021-07-29  2:07   ` yee.lee
2021-07-29  8:47   ` Marc Zyngier
2021-07-29  8:47     ` Marc Zyngier

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