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 A91A1E7717B for ; Sat, 7 Dec 2024 19:10:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: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:Cc: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=RZusazknTvRCKC9OsJXLvajHD+Zt9NLjrmB7oTXHVD0=; b=aiu+REyJWj4n5gIsbuq27kdCxm Pg1ILD/3dTOvgRaXFOAPYKeKLpR147dx+1lDV3eBm9iSa1Y7XpV8ygQsdl7XmrC35o3TXIm5IOk9a FOq+KZU68l2rwS7TZCVylLOS6ELENuOj6yUrHfaAGSEX5MLUoV/jUk6WqUKlgOC1JZeSwEkmv1oxX BrKO4bHCHUVlf4Sg9s0MAVFYSM0lUfWILDngbl3e1d7g7ocrx18hydibEOYw2XCq07IPkeSHv19pj htZR2MQttUWbex/C0DcNZZ8mBCcLrbdQzRV+rLiOMCLqHMdSHtN1GaxH/020Xc6CcGVmfx38tUFPF Xn8jYecg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tK0C0-00000004ISx-1d1k; Sat, 07 Dec 2024 19:10:16 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tK09y-00000004IKX-0gUL for linux-arm-kernel@lists.infradead.org; Sat, 07 Dec 2024 19:08:12 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 3CF18A40856; Sat, 7 Dec 2024 19:06:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E789C4CEE0; Sat, 7 Dec 2024 19:08:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733598488; bh=ieCSJY6ovtV+5BP0KLjpV97miFo9w2jKSQmZAKncuJk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mDstrgRc3DVnIPMquH9SUR5DmN++/RW9bLlH+EXnQNm1tPZjG/GQmwRUuD92yMN5Y /sZT5Qeu6XmbZ7Ur/xO29B5aGMrog2esOHQMsd/2dP/G6SxIO+E6Kw0cMuCjq7GoGm H2uV0V/DDrXYM0F5h3jTTgBUx4/2ydMw7befQBC16Lsjh+M6ta0VcvmlG/dgkP7g1o QZkuVHrncM9M4kEHlycnZWII0OW34n/jIJHAfTG6Y2dLHSkR1K5QtLpCbrtrHc3cv7 nGGeGH8Wf8FFR0PFDwC2xGzTrpmHbe2SiivkHx/hL4INnUAAD5OCBuJpXNw6/lBPlK uZkMDzqLlbQRg== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1tK09u-001TOc-3X; Sat, 07 Dec 2024 19:08:06 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Cc: Catalin Marinas , Will Deacon , Mark Rutland , Joey Gouly , Mark Brown Subject: [PATCH 1/4] arm64/sysreg: Allow a 'Mapping' descriptor for system registers Date: Sat, 7 Dec 2024 19:07:37 +0000 Message-Id: <20241207190740.2607673-2-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241207190740.2607673-1-maz@kernel.org> References: <20241207190740.2607673-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, joey.gouly@arm.com, broonie@kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241207_110810_356123_138B65E8 X-CRM114-Status: GOOD ( 12.48 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org *EL02 and *_EL12 system registers are actually only accessors for EL0 and EL1 registers accessed from EL2 when HCR_EL2.E2H==1. They do not have fields of their own. To that effect, introduce a 'Mapping' entry, describing which system register an _EL12 register maps to. Implementation wise, this is handled the same was as Fields, which ls only a comment. Signed-off-by: Marc Zyngier --- arch/arm64/tools/gen-sysreg.awk | 2 +- arch/arm64/tools/sysreg | 7 +++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm64/tools/gen-sysreg.awk b/arch/arm64/tools/gen-sysreg.awk index d1254a056114e..1a2afc9fdd42e 100755 --- a/arch/arm64/tools/gen-sysreg.awk +++ b/arch/arm64/tools/gen-sysreg.awk @@ -206,7 +206,7 @@ END { # Currently this is effectivey a comment, in future we may want to emit # defines for the fields. -/^Fields/ && block_current() == "Sysreg" { +(/^Fields/ || /^Mapping/) && block_current() == "Sysreg" { expect_fields(2) if (next_bit != 63) diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg index b081b54d6d227..b6846c601df6c 100644 --- a/arch/arm64/tools/sysreg +++ b/arch/arm64/tools/sysreg @@ -38,6 +38,13 @@ # Fields # EndSysreg +# For register names indicating a cross-EL access (*_EL12, *EL02), +# a Mapping entry describes the register it actually accesses: + +# Sysreg +# Mapping +# EndSysreg + # For ID registers we adopt a few conventions for translating the # language in the ARM into defines: # -- 2.39.2