From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C63881DA5A for ; Mon, 28 Oct 2024 05:34:38 +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=1730093683; cv=none; b=tZdHXjfziBE7ExjnobIlyWoO3BHjSQXZavM0C3Lv2OZrAduoG8wCGXrZMAdJQ4mWxF6RNI6d194CLCYctbBXkDSxnzFEwfsdHDbYGJyPB+HRynJkXmYpgSyEh3gCbAXYoPrmdj3zEF+yXfOoXO6kGfHUMCNDtorVZtnUyPWB+Gc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730093683; c=relaxed/simple; bh=ACtt5kqYmJZO6B2t8rgM/d2p645lg4GTKdOsCXsFcy4=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=OToOFGavDmqTk5oH6Hk+4tG1qW4h/NTyDDzfHIUdGG/DEkbvm8d+WXCSKpszxxBsAQGeCNBMIwBpn/p9I7JqPlmQaZs0/5qizYoqJbhSaB1/zY/zmV+s6a8ZZCnnbjHQ2y4CvcNjHf9WK09bjN0hzQOkQKMF0XRd7gKF+FMLw9I= 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 C16FE497; Sun, 27 Oct 2024 22:35:07 -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 7D7D03F66E; Sun, 27 Oct 2024 22:34:34 -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 0/7] arm64/hw_breakpoint: Enable FEAT_Debugv8p9 Date: Mon, 28 Oct 2024 11:04:19 +0530 Message-Id: <20241028053426.2486633-1-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series enables FEAT_Debugv8p9 thus extending breakpoint and watchpoint support upto 64. This series is based on v6.12-rc5 although this depends on FEAT_FGT2 FGU series posted earlier, for MDSELR_EL1 handling in various KVM guest configurations. https://lore.kernel.org/all/20241001024356.1096072-1-anshuman.khandual@arm.com/ Cc: Jonathan Corbet Cc: Marc Zyngier Cc: Oliver Upton Cc: James Morse Cc: Suzuki K Poulose Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Brown Cc: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org Cc: kvmarm@lists.linux.dev Cc: linux-kernel@vger.kernel.org Changes in V2: Following changes have been made per review comments from Mark Rutland - Orr MDCR_EL2_EBWE directly without an intermittent register - 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 - Added required sysreg tools patches from KVM FEAT_FGT2 series for build Changes in V1: https://lore.kernel.org/all/20241001043602.1116991-1-anshuman.khandual@arm.com/ - Changed FTR_STRICT to FTR_NONSTRICT for the following ID_AA64DFR1_EL1 register fields - ABL_CMPs, DPFZS, PMICNTR, CTX_CMPs, WRPs and BRPs Changes in RFC V2: https://lore.kernel.org/linux-arm-kernel/20240620092607.267132-1-anshuman.khandual@arm.com/ - This series has been split from RFC V1 dealing only with arm64 breakpoints - Restored back DBG_MDSCR_MASK definition (unrelated change) - Added preempt_disable()/enable() blocks between selecting banks and registers Changes in RFC: https://lore.kernel.org/all/20240405080008.1225223-1-anshuman.khandual@arm.com/ Anshuman Khandual (7): arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1 arm64/sysreg: Add register fields for MDSELR_EL1 arm64/sysreg: Add register fields for HDFGRTR2_EL2 arm64/sysreg: Add register fields for HDFGWTR2_EL2 arm64/cpufeature: Add field details for ID_AA64DFR1_EL1 register arm64/boot: Enable EL2 requirements for FEAT_Debugv8p9 arm64/hw_breakpoint: Enable FEAT_Debugv8p9 Documentation/arch/arm64/booting.rst | 19 +++++++ arch/arm64/include/asm/debug-monitors.h | 1 + arch/arm64/include/asm/el2_setup.h | 26 +++++++++ arch/arm64/include/asm/hw_breakpoint.h | 46 ++++++++++++---- arch/arm64/include/asm/kvm_arm.h | 1 + arch/arm64/kernel/cpufeature.c | 21 ++++++-- arch/arm64/kernel/debug-monitors.c | 15 ++++-- arch/arm64/kernel/hw_breakpoint.c | 38 +++++++++++++- arch/arm64/tools/sysreg | 70 +++++++++++++++++++++++++ 9 files changed, 216 insertions(+), 21 deletions(-) -- 2.25.1