From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 931AC14A08E for ; Sat, 7 Dec 2024 19:08:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733598488; cv=none; b=gRFOn1ROMqVfH3CLRWXtjvjkR0bFYUxrq5q3HURDAsWOyqjU2BpoWC6Xu+qH5CnF99/EnYUSwOOdnajA5DSB7q4QghFe89NACH9aDzs/jtaoIKd+gJeHWhoHXz3i5spgDkeSImKYUaWOJ22+VWxWSIzdVhkKCLE0BKc5YHnPNd8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733598488; c=relaxed/simple; bh=ieCSJY6ovtV+5BP0KLjpV97miFo9w2jKSQmZAKncuJk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=dY14H/A/WQQaxZbZhSTgC3bkPO1JDONNUavlwlr0ntMFFIZobAeE1voz/Z3pz1Z+hmPe34ygfS12E443f/F6fqwuhL5NWQpq9KCdY3SR85I8tR7tfYCABoTM7tgx9MTiLclqo4yY66BsUtq0mMjwRy6jlfSSr13R4Ua5Ao6c6nI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mDstrgRc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mDstrgRc" 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> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: 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 *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