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 9B70855765 for ; Tue, 13 Feb 2024 15:35:51 +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=1707838551; cv=none; b=BnkQuW/SaMYfpkn9KNKv+Ec2zGYPF0ACWp9yy2c1+iAJk+yBWgOJR8Ds8lL5X4+Fe3KLgJ35+m6L0j9Oj61WGX6mtdofzajU1ZIilmM3IIQJojlEDhh9oY0kfS+maB7bwfiQCBUZ/TQS69/Mtuwyv0WMoJ/wwvol9V+Xk+SuBYI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707838551; c=relaxed/simple; bh=lOi0nYWrCp4OfefqkEB1D1NwaxZ4jMMmQHpyLE+05MQ=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=j8t7WmQU57sf8K92SS3YLgNJB7CmbJYEHBXzYd7sceeRSPnF90Rrj/DP6d7K4cayENdwmpBPHq3Neva0zS4wZrU5jYVcT3Rzr9TLKEe4uGJ86LFRKL7q+yJCIyKT0Nbk5BqKnCubkAhh+VuOmvrda1KFRSHP64mvnxKHTYN0PyQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MfPPjjCX; 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="MfPPjjCX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CEF64C43390; Tue, 13 Feb 2024 15:35:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707838551; bh=lOi0nYWrCp4OfefqkEB1D1NwaxZ4jMMmQHpyLE+05MQ=; h=From:Subject:Date:To:Cc:From; b=MfPPjjCX9SrrR8K7K/HfWHaUcVX/sRqvql+DGvyz7L0zjceUULbMIc0HGvhKrgAp5 T1arEiNZbik14+uzwDzJ/Co1bb4ENQaH9Cdk7sbKy6MKznnZFXDyMygWU35u0ujniT 9MJFM1rXfmVqfRR0UJLLH7tsk7w706w88nSZ4pqOiUFfV/3FG2mEVfQv/QTQ3Hl02B IV3BDEcQdvMQOYWBxVT+l585hcyEvjAS09ezDCEIEgC4vFPw0+y1uG3HYHYHK3kZoK 7R+rS5x1peNZAqxVBNIdmzXEtdudEjP/PAasvxa9DNyqwUuMDSrUTq7YrZamjG7C/f DWCu54M9jkIWw== From: Mark Brown Subject: [PATCH 0/2] arm64/fp: Initialise all bits in vector control registers to known values Date: Tue, 13 Feb 2024 15:32:44 +0000 Message-Id: <20240213-arm64-fp-init-vec-cr-v1-0-7e7c2d584f26@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAJyLy2UC/x3MQQqEMAxA0atI1hNIY9VxriIupEbNYqqkIoJ4d 4vLt/j/giSmkuBXXGByaNI1ZrhPAWEZ4iyoYzYwsSd2jIP9a4/Thhp1x0MCBkNyX+/bkpuKCHK 6mUx6vtuuv+8HI4Ca+WYAAAA= To: Catalin Marinas , Will Deacon Cc: Dave Martin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Brown X-Mailer: b4 0.13-dev-a684c X-Developer-Signature: v=1; a=openpgp-sha256; l=709; i=broonie@kernel.org; h=from:subject:message-id; bh=lOi0nYWrCp4OfefqkEB1D1NwaxZ4jMMmQHpyLE+05MQ=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBly4xTIZFC58++1TXzR5Klyk0/kcm5lwqk/TqXo2uL msKs0VuJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZcuMUwAKCRAk1otyXVSH0BjuCA CDbCM/Iuvqvrsj60fYPrnoyu/HSR76EnPZnYotrVSFn+0RRWw+1DHT7DGX5ybDNrm0w+QT/LGZJPYL PKIUOYTglOaJFGxe5ZUXyD+VvfbmNr2/cH55fgUiHC3knApuHtWL15olvxESonvrKjvnXTmuQJ0kfe s4GSABb0DQnADb+TL4wJsSJgRckDRV+5//wyTnzMSyBIqqvdNEeJkmSsYahX2iy9xKiVPzCJ8qCrB1 LNQ5M+DaxxFr73y0ycbIOc6jBvJB5keiEMOY9VguDxcIAibIdiTbx9JJdtAQ8kxB4J86MA1VCQa2uN HvF7VNG0a0nDul3curqeDQH/uD0Wpv X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB We currently do read/modify/write sequences whenever we update fields in ZCR_EL1 and SMCR_EL1 so fields we are not explicitly handling will not be initialised to known values, fix this. The EL2 registers are already fully configured. Signed-off-by: Mark Brown --- Mark Brown (2): arm64/sve: Ensure that all fields in ZCR_EL1 are set to known values arm64/sme: Ensure that all fields in SMCR_EL1 are set to known values arch/arm64/kernel/fpsimd.c | 5 +++++ 1 file changed, 5 insertions(+) --- base-commit: 54be6c6c5ae8e0d93a6c4641cb7528eb0b6ba478 change-id: 20240212-arm64-fp-init-vec-cr-018449327500 Best regards, -- Mark Brown