From nobody Mon Nov 25 11:54:10 2024 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C739618C939 for ; Mon, 28 Oct 2024 05:34:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093684; cv=none; b=EvoVup9pv79IGGH21mGmmxPJO51R+bO07ykqol5JD1obSdXI1WSLZg70G3REjj5DpMsu0ZcVC9bQc8NWzinBbDGP7+tSD6gob5eXkO7ANtrrxFLz06JutyuskKo6wEUsoycxn5PYIwp8h/IHzVAhXM3eletjkfPJJbdiiOnA8gE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093684; c=relaxed/simple; bh=GaF/AJPtFFSmYVZ9RwTT1qJ9/pcKegizYjxO27C8Oxo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Ms2ShJMn08gnieetBh8vRjv7HzLbGT67rJ1Ae8zlU56XIltJCEHWTmAZWQJ6AIZsS+mLSCPvXOdr6q2xdnk/g4Ob/C5bJi5uJ6oOdqD0KwgEvL3fjemvcE5olXazRjCqStCsOs5YcTyHaSIoHAuIbvTCvVVBElKaJY+3XeUKmkU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D1F2813D5; Sun, 27 Oct 2024 22:35:11 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.16.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 87A633F66E; Sun, 27 Oct 2024 22:34:38 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Anshuman Khandual , Jonathan Corbet , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown , Mark Rutland , kvmarm@lists.linux.dev Subject: [PATCH V2 1/7] arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1 Date: Mon, 28 Oct 2024 11:04:20 +0530 Message-Id: <20241028053426.2486633-2-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241028053426.2486633-1-anshuman.khandual@arm.com> References: <20241028053426.2486633-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This updates ID_AA64MMFR0_EL1 register fields as per the definitions based on DDI0601 2024-09. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Brown Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Mark Brown Signed-off-by: Anshuman Khandual --- arch/arm64/tools/sysreg | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg index 8d637ac4b7c6..41b0e54515eb 100644 --- a/arch/arm64/tools/sysreg +++ b/arch/arm64/tools/sysreg @@ -1556,6 +1556,7 @@ EndEnum UnsignedEnum 59:56 FGT 0b0000 NI 0b0001 IMP + 0b0010 FGT2 EndEnum Res0 55:48 UnsignedEnum 47:44 EXS @@ -1617,6 +1618,7 @@ Enum 3:0 PARANGE 0b0100 44 0b0101 48 0b0110 52 + 0b0111 56 EndEnum EndSysreg =20 --=20 2.25.1 From nobody Mon Nov 25 11:54:10 2024 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 96DF118DF77 for ; Mon, 28 Oct 2024 05:34:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093688; cv=none; b=iU4Nykm4Z1N+4/Pmg35KQZB+sKcNI5mUgZ+nP8h+EYny2mtgCmXlqx91jHg+956j6+T/SIxEMWMYd2FFy9VFy5VJds6VlgPYpxhXVRg7i5/VzsKVG6u9ZLO2Af2NipYUrNx/ax710ba2ZTOOaH5C7YnC5XbUAVZaaOf2+LqBlEc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093688; c=relaxed/simple; bh=w6v4ohXQqoYDYUvsdD62pXw6sZNKdkMLDTOtQLh2kgM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=mIZqmGM9I5wD/8szmwqx2Wyyf1oce6YSFZLKwiXXz2kfcFCH7VJFtAxGEdfcx2t3Hhh8xBPYxvJM5TnDS6pGZMoR+/GPJ4fbXR4JkcpRLP3gOpsIiWA1teV0z1KcEF+zod36R2I5ovoOsIzj4mo9Ylfw8JaqLvHDL0LZJQgGYao= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E55DD497; Sun, 27 Oct 2024 22:35:15 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.16.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9A1E33F66E; Sun, 27 Oct 2024 22:34:42 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Anshuman Khandual , Jonathan Corbet , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown , Mark Rutland , kvmarm@lists.linux.dev Subject: [PATCH V2 2/7] arm64/sysreg: Add register fields for MDSELR_EL1 Date: Mon, 28 Oct 2024 11:04:21 +0530 Message-Id: <20241028053426.2486633-3-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241028053426.2486633-1-anshuman.khandual@arm.com> References: <20241028053426.2486633-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This adds register fields for MDSELR_EL1 as per the definitions based on DDI0601 2024-09. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Brown Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Mark Brown Signed-off-by: Anshuman Khandual --- arch/arm64/tools/sysreg | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg index 41b0e54515eb..a92fc241fb4e 100644 --- a/arch/arm64/tools/sysreg +++ b/arch/arm64/tools/sysreg @@ -93,6 +93,17 @@ Res0 63:32 Field 31:0 DTRTX EndSysreg =20 +Sysreg MDSELR_EL1 2 0 0 4 2 +Res0 63:6 +Enum 5:4 BANK + 0b00 BANK_0 + 0b01 BANK_1 + 0b10 BANK_2 + 0b11 BANK_3 +EndEnum +Res0 3:0 +EndSysreg + Sysreg OSECCR_EL1 2 0 0 6 2 Res0 63:32 Field 31:0 EDECCR --=20 2.25.1 From nobody Mon Nov 25 11:54:10 2024 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C2FB518CBE3 for ; Mon, 28 Oct 2024 05:34:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093692; cv=none; b=new9nSmOPt7CUCEy3glL3A/pqiU40kqzEadWzRG5PXxXV8J9tn/havF/sTUWQbs6CCW1+yApxIgauHxdW5M2knTHUWt87OmZTvKH3YzbPjAapvli5VvPqdSGffMUrkCJguiWeTlxYQvAQ1CFXoahwGLBxKlzY7E+dLfWGzDDIMM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093692; c=relaxed/simple; bh=Yt/L28bmCc/WV3XKOrGcwxe1nKbizUUlTdTGxL6TMsI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=OsJBSG0+CyVxq+rH4MF43Ltyyzb6TdI4Rv19EohoGFQfrCEAWf/6dEqYgpfpEU4XfvR0SjrrX7f8YC/6JEvcz29ln/dGB94OEN4JSLF4jxcBrTxGPlU3ik16f3ziF09ndWE8QI6dYs9G9Rny8kpvQGdZlYOCPHwDoGYzPL/+tBY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EE05B13D5; Sun, 27 Oct 2024 22:35:19 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.16.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id AC0FB3F66E; Sun, 27 Oct 2024 22:34:46 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Anshuman Khandual , Jonathan Corbet , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown , Mark Rutland , kvmarm@lists.linux.dev Subject: [PATCH V2 3/7] arm64/sysreg: Add register fields for HDFGRTR2_EL2 Date: Mon, 28 Oct 2024 11:04:22 +0530 Message-Id: <20241028053426.2486633-4-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241028053426.2486633-1-anshuman.khandual@arm.com> References: <20241028053426.2486633-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This adds register fields for HDFGRTR2_EL2 as per the definitions based on DDI0601 2024-09. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Brown Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Mark Brown Signed-off-by: Anshuman Khandual --- arch/arm64/tools/sysreg | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg index a92fc241fb4e..1ee850b3e7a7 100644 --- a/arch/arm64/tools/sysreg +++ b/arch/arm64/tools/sysreg @@ -2476,6 +2476,35 @@ Field 1 ICIALLU Field 0 ICIALLUIS EndSysreg =20 +Sysreg HDFGRTR2_EL2 3 4 3 1 0 +Res0 63:25 +Field 24 nPMBMAR_EL1 +Field 23 nMDSTEPOP_EL1 +Field 22 nTRBMPAM_EL1 +Res0 21 +Field 20 nTRCITECR_EL1 +Field 19 nPMSDSFR_EL1 +Field 18 nSPMDEVAFF_EL1 +Field 17 nSPMID +Field 16 nSPMSCR_EL1 +Field 15 nSPMACCESSR_EL1 +Field 14 nSPMCR_EL0 +Field 13 nSPMOVS +Field 12 nSPMINTEN +Field 11 nSPMCNTEN +Field 10 nSPMSELR_EL0 +Field 9 nSPMEVTYPERn_EL0 +Field 8 nSPMEVCNTRn_EL0 +Field 7 nPMSSCR_EL1 +Field 6 nPMSSDATA +Field 5 nMDSELR_EL1 +Field 4 nPMUACR_EL1 +Field 3 nPMICFILTR_EL0 +Field 2 nPMICNTR_EL0 +Field 1 nPMIAR_EL1 +Field 0 nPMECR_EL1 +EndSysreg + Sysreg HDFGRTR_EL2 3 4 3 1 4 Field 63 PMBIDR_EL1 Field 62 nPMSNEVFR_EL1 --=20 2.25.1 From nobody Mon Nov 25 11:54:10 2024 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DE4FC18CC1F for ; Mon, 28 Oct 2024 05:34:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093696; cv=none; b=OWM0gMruEUSWLKwwxMvaqVVTORWge3rg2KIOKtywUpOPQYsIEumUXsV/nZ2pNjh3aHAES/xfnfpNED7OYEUYUH4OzLAlNtHOekfUwbMDkFH1oor76hI08o0yv5K88X/jApP1feOxa7vO1165QYZkGvLQ/GQDHZ20m/bCv78UsT4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093696; c=relaxed/simple; bh=JmQdH4QJ2iLV2HfOJgSZsy+8ZNEr+5bnQGt87o6tGrI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fOjKW3HNX4IpTxBHqxjXD9+8EkYsapkcW2Yl6c9aIrJjev9pMDTteww6/Eiu+UGWzv/khQPeaSOI6jn367mR2SCz6N6RPJeJdO6Vr6iI08hwLJfPAqKd4BoGeDPawYHF4uX07Q963Ac445kkw4rhFO+WbVRvliBbv6VzRC31mT8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 02B98497; Sun, 27 Oct 2024 22:35:24 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.16.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B597C3F66E; Sun, 27 Oct 2024 22:34:50 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Anshuman Khandual , Jonathan Corbet , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown , Mark Rutland , kvmarm@lists.linux.dev Subject: [PATCH V2 4/7] arm64/sysreg: Add register fields for HDFGWTR2_EL2 Date: Mon, 28 Oct 2024 11:04:23 +0530 Message-Id: <20241028053426.2486633-5-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241028053426.2486633-1-anshuman.khandual@arm.com> References: <20241028053426.2486633-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This adds register fields for HDFGWTR2_EL2 as per the definitions based on DDI0601 2024-09. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Brown Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Mark Brown Signed-off-by: Anshuman Khandual --- arch/arm64/tools/sysreg | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg index 1ee850b3e7a7..3e97af013ef7 100644 --- a/arch/arm64/tools/sysreg +++ b/arch/arm64/tools/sysreg @@ -2505,6 +2505,34 @@ Field 1 nPMIAR_EL1 Field 0 nPMECR_EL1 EndSysreg =20 +Sysreg HDFGWTR2_EL2 3 4 3 1 1 +Res0 63:25 +Field 24 nPMBMAR_EL1 +Field 23 nMDSTEPOP_EL1 +Field 22 nTRBMPAM_EL1 +Field 21 nPMZR_EL0 +Field 20 nTRCITECR_EL1 +Field 19 nPMSDSFR_EL1 +Res0 18:17 +Field 16 nSPMSCR_EL1 +Field 15 nSPMACCESSR_EL1 +Field 14 nSPMCR_EL0 +Field 13 nSPMOVS +Field 12 nSPMINTEN +Field 11 nSPMCNTEN +Field 10 nSPMSELR_EL0 +Field 9 nSPMEVTYPERn_EL0 +Field 8 nSPMEVCNTRn_EL0 +Field 7 nPMSSCR_EL1 +Res0 6 +Field 5 nMDSELR_EL1 +Field 4 nPMUACR_EL1 +Field 3 nPMICFILTR_EL0 +Field 2 nPMICNTR_EL0 +Field 1 nPMIAR_EL1 +Field 0 nPMECR_EL1 +EndSysreg + Sysreg HDFGRTR_EL2 3 4 3 1 4 Field 63 PMBIDR_EL1 Field 62 nPMSNEVFR_EL1 --=20 2.25.1 From nobody Mon Nov 25 11:54:10 2024 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E746618CBE3 for ; Mon, 28 Oct 2024 05:34:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093700; cv=none; b=DbG44Y4XfMXaAVEs29d1E3OYM2y3Rsga/vzDER7Uq//2ne7nB6vyCG1fNzwpYg/eU5gR7kEbS6k3hU3GelOqrBobg9NF2UHiJwoqf5NkRehJu4jX2wBfyCVT90VREBQxmOfbCVxUC80ZugN5n+Z6cdB8ggZEDegUL8Yl71rOAro= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093700; c=relaxed/simple; bh=ShmzgYBWJS9FOhUzx3tAhqp5xovGEdeE1ph89mUqQA0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=LGYyh/jkvAJGzz8Dhu0xOWpZmgQJHK0Zbc+f3OSWa1/rO+CaEQaTzCz8pq+RpX6ui9JzlYO7albth+bi4TihHLuFk8ergwCyDGVh6eY/YeOmPJtRM5zCIpATEAxmmGmT7mS6hDVdI6KhHN4UGtg1gdKQIgwISQyV7tdODle1xGk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0AC5C13D5; Sun, 27 Oct 2024 22:35:28 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.16.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id BDC073F66E; Sun, 27 Oct 2024 22:34:54 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Anshuman Khandual , Jonathan Corbet , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown , Mark Rutland , kvmarm@lists.linux.dev Subject: [PATCH V2 5/7] arm64/cpufeature: Add field details for ID_AA64DFR1_EL1 register Date: Mon, 28 Oct 2024 11:04:24 +0530 Message-Id: <20241028053426.2486633-6-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241028053426.2486633-1-anshuman.khandual@arm.com> References: <20241028053426.2486633-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This adds required field details for ID_AA64DFR1_EL1, and also drops dummy ftr_raz[] array which is now redundant. These register fields will be used to enable increased breakpoint and watchpoint registers via FEAT_Debugv8p9 later. Cc: Catalin Marinas Cc: Will Deacon cc: Mark Brown Cc: Mark Rutland Cc: Marc Zyngier Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/arm64/kernel/cpufeature.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 718728a85430..bd4d85f5dd92 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -530,6 +530,21 @@ static const struct arm64_ftr_bits ftr_id_aa64dfr0[] = =3D { ARM64_FTR_END, }; =20 +static const struct arm64_ftr_bits ftr_id_aa64dfr1[] =3D { + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1= _ABL_CMPs_SHIFT, 8, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1= _DPFZS_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1_EB= EP_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1_IT= E_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1_AB= LE_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1= _PMICNTR_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1_SP= MU_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1= _CTX_CMPs_SHIFT, 8, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1= _WRPs_SHIFT, 8, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1= _BRPs_SHIFT, 8, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR1_EL1_SY= SPMUID_SHIFT, 8, 0), + ARM64_FTR_END, +}; + static const struct arm64_ftr_bits ftr_mvfr0[] =3D { ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, MVFR0_EL1_FPRound_= SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, MVFR0_EL1_FPShVec_= SHIFT, 4, 0), @@ -708,10 +723,6 @@ static const struct arm64_ftr_bits ftr_single32[] =3D { ARM64_FTR_END, }; =20 -static const struct arm64_ftr_bits ftr_raz[] =3D { - ARM64_FTR_END, -}; - #define __ARM64_FTR_REG_OVERRIDE(id_str, id, table, ovr) { \ .sys_id =3D id, \ .reg =3D &(struct arm64_ftr_reg){ \ @@ -784,7 +795,7 @@ static const struct __ftr_reg_entry { =20 /* Op1 =3D 0, CRn =3D 0, CRm =3D 5 */ ARM64_FTR_REG(SYS_ID_AA64DFR0_EL1, ftr_id_aa64dfr0), - ARM64_FTR_REG(SYS_ID_AA64DFR1_EL1, ftr_raz), + ARM64_FTR_REG(SYS_ID_AA64DFR1_EL1, ftr_id_aa64dfr1), =20 /* Op1 =3D 0, CRn =3D 0, CRm =3D 6 */ ARM64_FTR_REG(SYS_ID_AA64ISAR0_EL1, ftr_id_aa64isar0), --=20 2.25.1 From nobody Mon Nov 25 11:54:10 2024 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3D3E218EFEB; 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dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4F7CA497; Sun, 27 Oct 2024 22:35:32 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.16.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C87843F66E; Sun, 27 Oct 2024 22:34:58 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Anshuman Khandual , Jonathan Corbet , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown , Mark Rutland , kvmarm@lists.linux.dev, linux-doc@vger.kernel.org Subject: [PATCH V2 6/7] arm64/boot: Enable EL2 requirements for FEAT_Debugv8p9 Date: Mon, 28 Oct 2024 11:04:25 +0530 Message-Id: <20241028053426.2486633-7-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241028053426.2486633-1-anshuman.khandual@arm.com> References: <20241028053426.2486633-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Fine grained trap control for MDSELR_EL1 register needs to be configured in HDFGRTR2_EL2, and HDFGWTR2_EL2 registers when kernel enters at EL1, but EL2 is also present. This adds a new helper __init_el2_fgt2() initializing this new FEAT_FGT2 based fine grained registers. MDCR_EL2.EBWE needs to be enabled for additional (beyond 16) breakpoint and watchpoint exceptions when kernel enters at EL1, but EL2 is also present. This updates __init_el2_debug() as required for FEAT_Debugv8p9. While here, also update booting.rst with MDCR_EL3 and SCR_EL3 requirements. Cc: Catalin Marinas Cc: Will Deacon Cc: Jonathan Corbet Cc: Marc Zyngier Cc: Oliver Upton Cc: linux-arm-kernel@lists.infradead.org Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: kvmarm@lists.linux.dev Signed-off-by: Anshuman Khandual --- Changes in V2: - Orr MDCR_EL2_EBWE directly without an intermittent register Documentation/arch/arm64/booting.rst | 19 +++++++++++++++++++ arch/arm64/include/asm/el2_setup.h | 26 ++++++++++++++++++++++++++ arch/arm64/include/asm/kvm_arm.h | 1 + 3 files changed, 46 insertions(+) diff --git a/Documentation/arch/arm64/booting.rst b/Documentation/arch/arm6= 4/booting.rst index b57776a68f15..e69d972018cf 100644 --- a/Documentation/arch/arm64/booting.rst +++ b/Documentation/arch/arm64/booting.rst @@ -285,6 +285,12 @@ Before jumping into the kernel, the following conditio= ns must be met: =20 - SCR_EL3.FGTEn (bit 27) must be initialised to 0b1. =20 + For CPUs with the Fine Grained Traps (FEAT_FGT2) extension present: + + - If EL3 is present and the kernel is entered at EL2: + + - SCR_EL3.FGTEn2 (bit 59) must be initialised to 0b1. + For CPUs with support for HCRX_EL2 (FEAT_HCX) present: =20 - If EL3 is present and the kernel is entered at EL2: @@ -319,6 +325,19 @@ Before jumping into the kernel, the following conditio= ns must be met: - ZCR_EL2.LEN must be initialised to the same value for all CPUs the kernel will execute on. =20 + For CPUs with FEAT_Debugv8p9 extension present: + + - If the kernel is entered at EL1 and EL2 is present: + + - HDFGRTR2_EL2.nMDSELR_EL1 (bit 5) must be initialized to 0b1 + - HDFGWTR2_EL2.nMDSELR_EL1 (bit 5) must be initialized to 0b1 + - MDCR_EL2.EBWE (bit 43) must be initialized to 0b1 + + - If EL3 is present: + + - MDCR_EL3.TDA (bit 9) must be initialized to 0b0 + - MDCR_EL3.EBWE (bit 43) must be initialized to 0b1 + For CPUs with the Scalable Matrix Extension (FEAT_SME): =20 - If EL3 is present: diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el= 2_setup.h index e0ffdf13a18b..289e9d8f8ee6 100644 --- a/arch/arm64/include/asm/el2_setup.h +++ b/arch/arm64/include/asm/el2_setup.h @@ -97,6 +97,13 @@ // to own it. =20 .Lskip_trace_\@: + mrs x1, id_aa64dfr0_el1 + ubfx x1, x1, #ID_AA64DFR0_EL1_DebugVer_SHIFT, #4 + cmp x1, #ID_AA64DFR0_EL1_DebugVer_V8P9 + b.lt .Lskip_dbg_v8p9_\@ + + orr x2, x2, #MDCR_EL2_EBWE +.Lskip_dbg_v8p9_\@: msr mdcr_el2, x2 // Configure debug traps .endm =20 @@ -215,6 +222,24 @@ .Lskip_fgt_\@: .endm =20 +.macro __init_el2_fgt2 + mrs x1, id_aa64mmfr0_el1 + ubfx x1, x1, #ID_AA64MMFR0_EL1_FGT_SHIFT, #4 + cmp x1, #ID_AA64MMFR0_EL1_FGT_FGT2 + b.lt .Lskip_fgt2_\@ + + mrs x1, id_aa64dfr0_el1 + ubfx x1, x1, #ID_AA64DFR0_EL1_DebugVer_SHIFT, #4 + cmp x1, #ID_AA64DFR0_EL1_DebugVer_V8P9 + b.lt .Lskip_dbg_v8p9_\@ + + mov_q x0, HDFGWTR2_EL2_nMDSELR_EL1 + msr_s SYS_HDFGWTR2_EL2, x0 + msr_s SYS_HDFGRTR2_EL2, x0 +.Lskip_dbg_v8p9_\@: +.Lskip_fgt2_\@: +.endm + .macro __init_el2_nvhe_prepare_eret mov x0, #INIT_PSTATE_EL1 msr spsr_el2, x0 @@ -240,6 +265,7 @@ __init_el2_nvhe_idregs __init_el2_cptr __init_el2_fgt + __init_el2_fgt2 .endm =20 #ifndef __KVM_NVHE_HYPERVISOR__ diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_= arm.h index 109a85ee6910..34936f550118 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -312,6 +312,7 @@ GENMASK(15, 0)) =20 /* Hyp Debug Configuration Register bits */ +#define MDCR_EL2_EBWE (UL(1) << 43) #define MDCR_EL2_E2TB_MASK (UL(0x3)) #define MDCR_EL2_E2TB_SHIFT (UL(24)) #define MDCR_EL2_HPMFZS (UL(1) << 36) --=20 2.25.1 From nobody Mon Nov 25 11:54:10 2024 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2F84E18FC8F for ; 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dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5C626497; Sun, 27 Oct 2024 22:35:36 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.16.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 1AC1E3F66E; Sun, 27 Oct 2024 22:35:02 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Anshuman Khandual , Jonathan Corbet , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown , Mark Rutland , kvmarm@lists.linux.dev Subject: [PATCH V2 7/7] arm64/hw_breakpoint: Enable FEAT_Debugv8p9 Date: Mon, 28 Oct 2024 11:04:26 +0530 Message-Id: <20241028053426.2486633-8-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241028053426.2486633-1-anshuman.khandual@arm.com> References: <20241028053426.2486633-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Currently there can be maximum 16 breakpoints, and 16 watchpoints available on a given platform - as detected from ID_AA64DFR0_EL1.[BRPs|WRPs] register fields. But these breakpoint, and watchpoints can be extended further up to 64 via a new arch feature FEAT_Debugv8p9. This first enables banked access for the breakpoint and watchpoint register set via MDSELR_EL1, extended exceptions via MDSCR_EL1.EMBWE and determining available breakpoints and watchpoints in the platform from ID_AA64DFR1_EL1, when FEAT_Debugv8p9 is enabled. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- Changes in V2: - Alphabetically order header files in debug-monitors.c - Dropped embwe_ref_count mechanism - Dropped preempt_enable() from AARCH64_DBG_READ - Dropped preempt_disable() from AARCH64_DBG_WRITE - Dropped set_bank_index() - Renamed read/write_wb_reg() as __read/__write_wb_reg() - Modified read/write_wb_reg() to have MDSELR_E1 based banked read/write arch/arm64/include/asm/debug-monitors.h | 1 + arch/arm64/include/asm/hw_breakpoint.h | 46 +++++++++++++++++++------ arch/arm64/kernel/debug-monitors.c | 15 +++++--- arch/arm64/kernel/hw_breakpoint.c | 38 ++++++++++++++++++-- 4 files changed, 84 insertions(+), 16 deletions(-) diff --git a/arch/arm64/include/asm/debug-monitors.h b/arch/arm64/include/a= sm/debug-monitors.h index 13d437bcbf58..a14097673ae0 100644 --- a/arch/arm64/include/asm/debug-monitors.h +++ b/arch/arm64/include/asm/debug-monitors.h @@ -20,6 +20,7 @@ #define DBG_MDSCR_KDE (1 << 13) #define DBG_MDSCR_MDE (1 << 15) #define DBG_MDSCR_MASK ~(DBG_MDSCR_KDE | DBG_MDSCR_MDE) +#define DBG_MDSCR_EMBWE (1UL << 32) =20 #define DBG_ESR_EVT(x) (((x) >> 27) & 0x7) =20 diff --git a/arch/arm64/include/asm/hw_breakpoint.h b/arch/arm64/include/as= m/hw_breakpoint.h index bd81cf17744a..ec7c7901c61a 100644 --- a/arch/arm64/include/asm/hw_breakpoint.h +++ b/arch/arm64/include/asm/hw_breakpoint.h @@ -79,8 +79,8 @@ static inline void decode_ctrl_reg(u32 reg, * Limits. * Changing these will require modifications to the register accessors. */ -#define ARM_MAX_BRP 16 -#define ARM_MAX_WRP 16 +#define ARM_MAX_BRP 64 +#define ARM_MAX_WRP 64 =20 /* Virtual debug register bases. */ #define AARCH64_DBG_REG_BVR 0 @@ -94,6 +94,14 @@ static inline void decode_ctrl_reg(u32 reg, #define AARCH64_DBG_REG_NAME_WVR wvr #define AARCH64_DBG_REG_NAME_WCR wcr =20 +static inline bool is_debug_v8p9_enabled(void) +{ + u64 dfr0 =3D read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1); + int dver =3D cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_D= ebugVer_SHIFT); + + return dver =3D=3D ID_AA64DFR0_EL1_DebugVer_V8P9; +} + /* Accessor macros for the debug registers. */ #define AARCH64_DBG_READ(N, REG, VAL) do {\ VAL =3D read_sysreg(dbg##REG##N##_el1);\ @@ -138,19 +146,37 @@ static inline void ptrace_hw_copy_thread(struct task_= struct *task) /* Determine number of BRP registers available. */ static inline int get_num_brps(void) { - u64 dfr0 =3D read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1); - return 1 + - cpuid_feature_extract_unsigned_field(dfr0, - ID_AA64DFR0_EL1_BRPs_SHIFT); + u64 dfr0, dfr1; + int dver, brps; + + dfr0 =3D read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1); + dver =3D cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_Debug= Ver_SHIFT); + if (dver =3D=3D ID_AA64DFR0_EL1_DebugVer_V8P9) { + dfr1 =3D read_sanitised_ftr_reg(SYS_ID_AA64DFR1_EL1); + brps =3D cpuid_feature_extract_unsigned_field_width(dfr1, + ID_AA64DFR1_EL1_BRPs_SHIFT, 8); + } else { + brps =3D cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_BRPs= _SHIFT); + } + return 1 + brps; } =20 /* Determine number of WRP registers available. */ static inline int get_num_wrps(void) { - u64 dfr0 =3D read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1); - return 1 + - cpuid_feature_extract_unsigned_field(dfr0, - ID_AA64DFR0_EL1_WRPs_SHIFT); + u64 dfr0, dfr1; + int dver, wrps; + + dfr0 =3D read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1); + dver =3D cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_Debug= Ver_SHIFT); + if (dver =3D=3D ID_AA64DFR0_EL1_DebugVer_V8P9) { + dfr1 =3D read_sanitised_ftr_reg(SYS_ID_AA64DFR1_EL1); + wrps =3D cpuid_feature_extract_unsigned_field_width(dfr1, + ID_AA64DFR1_EL1_WRPs_SHIFT, 8); + } else { + wrps =3D cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_WRPs= _SHIFT); + } + return 1 + wrps; } =20 #ifdef CONFIG_CPU_PM diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-m= onitors.c index 024a7b245056..b56716c654d8 100644 --- a/arch/arm64/kernel/debug-monitors.c +++ b/arch/arm64/kernel/debug-monitors.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include =20 @@ -34,7 +35,7 @@ u8 debug_monitors_arch(void) /* * MDSCR access routines. */ -static void mdscr_write(u32 mdscr) +static void mdscr_write(u64 mdscr) { unsigned long flags; flags =3D local_daif_save(); @@ -43,7 +44,7 @@ static void mdscr_write(u32 mdscr) } NOKPROBE_SYMBOL(mdscr_write); =20 -static u32 mdscr_read(void) +static u64 mdscr_read(void) { return read_sysreg(mdscr_el1); } @@ -79,7 +80,7 @@ static DEFINE_PER_CPU(int, kde_ref_count); =20 void enable_debug_monitors(enum dbg_active_el el) { - u32 mdscr, enable =3D 0; + u64 mdscr, enable =3D 0; =20 WARN_ON(preemptible()); =20 @@ -90,6 +91,9 @@ void enable_debug_monitors(enum dbg_active_el el) this_cpu_inc_return(kde_ref_count) =3D=3D 1) enable |=3D DBG_MDSCR_KDE; =20 + if (is_debug_v8p9_enabled()) + enable |=3D DBG_MDSCR_EMBWE; + if (enable && debug_enabled) { mdscr =3D mdscr_read(); mdscr |=3D enable; @@ -100,7 +104,7 @@ NOKPROBE_SYMBOL(enable_debug_monitors); =20 void disable_debug_monitors(enum dbg_active_el el) { - u32 mdscr, disable =3D 0; + u64 mdscr, disable =3D 0; =20 WARN_ON(preemptible()); =20 @@ -111,6 +115,9 @@ void disable_debug_monitors(enum dbg_active_el el) this_cpu_dec_return(kde_ref_count) =3D=3D 0) disable &=3D ~DBG_MDSCR_KDE; =20 + if (is_debug_v8p9_enabled()) + disable &=3D ~DBG_MDSCR_EMBWE; + if (disable) { mdscr =3D mdscr_read(); mdscr &=3D disable; diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_break= point.c index 722ac45f9f7b..630db607ca2b 100644 --- a/arch/arm64/kernel/hw_breakpoint.c +++ b/arch/arm64/kernel/hw_breakpoint.c @@ -103,7 +103,7 @@ int hw_breakpoint_slots(int type) WRITE_WB_REG_CASE(OFF, 14, REG, VAL); \ WRITE_WB_REG_CASE(OFF, 15, REG, VAL) =20 -static u64 read_wb_reg(int reg, int n) +static u64 __read_wb_reg(int reg, int n) { u64 val =3D 0; =20 @@ -118,9 +118,27 @@ static u64 read_wb_reg(int reg, int n) =20 return val; } + +static u64 read_wb_reg(int reg, int n) +{ + int mdsel_bank, index; + u64 val; + + if (!is_debug_v8p9_enabled()) + return __read_wb_reg(reg, n); + + mdsel_bank =3D n / 16; + index =3D n % 16; + preempt_disable(); + write_sysreg_s(mdsel_bank << MDSELR_EL1_BANK_SHIFT, SYS_MDSELR_EL1); + isb(); + val =3D __read_wb_reg(reg, index); + preempt_enable(); + return val; +} NOKPROBE_SYMBOL(read_wb_reg); =20 -static void write_wb_reg(int reg, int n, u64 val) +static void __write_wb_reg(int reg, int n, u64 val) { switch (reg + n) { GEN_WRITE_WB_REG_CASES(AARCH64_DBG_REG_BVR, AARCH64_DBG_REG_NAME_BVR, val= ); @@ -132,6 +150,22 @@ static void write_wb_reg(int reg, int n, u64 val) } isb(); } + +static void write_wb_reg(int reg, int n, u64 val) +{ + int mdsel_bank, index; + + if (!is_debug_v8p9_enabled()) + return __write_wb_reg(reg, n, val); + + mdsel_bank =3D n / 16; + index =3D n % 16; + preempt_disable(); + write_sysreg_s(mdsel_bank << MDSELR_EL1_BANK_SHIFT, SYS_MDSELR_EL1); + isb(); + __write_wb_reg(reg, index, val); + preempt_enable(); +} NOKPROBE_SYMBOL(write_wb_reg); =20 /* --=20 2.25.1