From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 41216C982D8 for ; Fri, 18 Sep 2026 16:14:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=aHMoz1vySQvYeQW+hJXZKhFp+T//bo0AG/CTIQJNNJo=; b=egqxy4V3i49Fk5 EVGULIiQp/ZyqUC5SuR2tD9Chx7YiTomRgAOotRGz2ZLHa54gy3LtJuJq75rkIJh3QxJrO+5C4b5C toI196pzWe0LOIECgrcIHu9v6VWQtFzNWNxCcmMQ7ECfzXOXSCmSAqFdsH8AvqamM6HrN7UPLe600 Muun9a6WbNzbxtgsJ44UreGnnOjVzVKoVx1wf/iUF6ZQbGYaC8T9Fzfneo/d+9E70UPffz/CqTpKm /r8P3qazMhrFx9A9Ymsxc7+bYX5ThSJklTYGc2C6CoOp9PVt7T1xKYqwKIZmBmN96fe2AWvPrSPGc eaAgTQfPSBmO/eHpPw7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7bEW-0000000Eyw5-3pql; Fri, 18 Sep 2026 16:14:40 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7bEM-0000000Eyso-39xM for linux-arm-kernel@lists.infradead.org; Fri, 18 Sep 2026 16:14:30 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 2F8676053B; Fri, 18 Sep 2026 16:14:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F07361F000FF; Fri, 18 Sep 2026 16:14:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789748069; bh=aHMoz1vySQvYeQW+hJXZKhFp+T//bo0AG/CTIQJNNJo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Edp8R+bBPQqImx1+AnsYjmOnuRIOuZBNv9WinTHaoT2DaiptqJx27nbkcCY8+1zLU peekFHkhOw2J1WKN44ohH3bDuRpgH1lqV8GkyKcFKG1KjapgQHnyVDf0Sslq++JjFa 2kRTowqnTeUg37ewHZQ7yuWYaGpnjk4GrQ6UN/jeec3jsd/wCXHG8NF475UmF3JIPI +NqXQs5Mow6EX4NSCPmfNjqJmyTm5paYlW2mbLzrjMxhw/HWMXejN/5sONfC8hsm9g qKS8tHj98Eh8MQxxT0DUmDbARLdqk3QEXt+tCJIfBgSM+KErRj8J243E/rwLS/pYfG tY0NDIM1gutHg== From: Will Deacon To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 04/21] arm64: bpf: Add support for generating reads of TPIDRRO_EL0 Date: Fri, 18 Sep 2026 17:13:48 +0100 Message-ID: <20260918161407.2300-5-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260918161407.2300-1-will@kernel.org> References: <20260918161407.2300-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Vladimir Murzin , Arnd Bergmann , Catalin Marinas , Linus Walleij , linux-kernel@vger.kernel.org, Mostafa Saleh , Marc Zyngier , David Hildenbrand , Lorenzo Stoakes , Oliver Upton , Will Deacon , Ard Biesheuvel Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In preparation for storing 'current' in TPIDRRO_EL0, add support for the instruction encoding of "MRS Rt, TPIDRRO_EL0" to the BPF JIT. Cc: Mark Rutland Signed-off-by: Will Deacon --- arch/arm64/include/asm/insn.h | 1 + arch/arm64/net/bpf_jit.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h index 1ce75a442638..0e739740513d 100644 --- a/arch/arm64/include/asm/insn.h +++ b/arch/arm64/include/asm/insn.h @@ -136,6 +136,7 @@ enum aarch64_insn_special_register { }; enum aarch64_insn_system_register { + AARCH64_INSN_SYSREG_TPIDRRO_EL0 = 0x5e83, AARCH64_INSN_SYSREG_TPIDR_EL1 = 0x4684, AARCH64_INSN_SYSREG_TPIDR_EL2 = 0x6682, AARCH64_INSN_SYSREG_SP_EL0 = 0x4208, diff --git a/arch/arm64/net/bpf_jit.h b/arch/arm64/net/bpf_jit.h index b2fe6e6dcf44..df469a005373 100644 --- a/arch/arm64/net/bpf_jit.h +++ b/arch/arm64/net/bpf_jit.h @@ -331,6 +331,8 @@ aarch64_insn_gen_adr(0, offset, Rd, AARCH64_INSN_ADR_TYPE_ADR) /* MRS */ +#define A64_MRS_TPIDRRO_EL0(Rt) \ + aarch64_insn_gen_mrs(Rt, AARCH64_INSN_SYSREG_TPIDRRO_EL0) #define A64_MRS_TPIDR_EL1(Rt) \ aarch64_insn_gen_mrs(Rt, AARCH64_INSN_SYSREG_TPIDR_EL1) #define A64_MRS_TPIDR_EL2(Rt) \ -- 2.55.0.1082.g2b9226bbc0-goog