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 885B42E8DFA; Wed, 9 Jul 2025 13:59:01 +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=1752069541; cv=none; b=XVwbxn5Sh5eVIEnD4NQRhWgABA5ewt6sAPiJPHr0BZ+8uW8G+jU5s/2B1RpP0mAQqodRW0h6Bq7UxaU6kDIxquInm8m97ck5K8wEOE493m43m7G25Et5vYdcYYEJfDPhU5kvfMU+a3OvAD9tG+LZOnAwraav05Jc9KzU04VbXKo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752069541; c=relaxed/simple; bh=CP99zLbeg128/0kKEbhA1RxKCuvVJ0YogugJgz8IY8A=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=DSi3ZycKwMZI/NA8H3ODb9S4SWxqZz+7eTw8QTpmYgMhktXLQQ73AcXuBYRoDkzJ1kj8HIxVNvXX/pOqOisrnYq0H42OSh9Or1m3BEWdMVftMqn2N7DP8yaNcjxzd50UvRNzrIsLvoBoJaIHZg4UI6YBH1oaDzYg1fT4tKCl1LE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YGeuLLNd; 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="YGeuLLNd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1BA0C4CEF1; Wed, 9 Jul 2025 13:58:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752069541; bh=CP99zLbeg128/0kKEbhA1RxKCuvVJ0YogugJgz8IY8A=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=YGeuLLNd+dxhfOfCOM67XNhESDwn9UmT053V/tWnqNHUAuhNsFBUErPoGLQ/fndyP f6r4raY2GV9BiAOD99CGKK04D5R9bnp1W9Hfsng8kg/ZnMcp6uoT7ml2txVPXqqc+1 LWn+tNOOhA0PVM1DeWKTt8ZSomGtRl8mo3aWvL+sJEDD0knWtT+rqa3wpjZ+f7T6X0 YGpPf2Xnrgmqjxj0FuRD/RrePnxWNR9pZRM/4YWEB1SBIvNfqFYgmcz0mStvJBSbAl CkmGJIriiuAGtiU1E57YGZNq5m324Rdi/eVVPH1qfwFLuGpF/Cd++vTBKrGfhsvKMJ IIL1T4qaOscrg== Message-ID: <6edfa099-ab0c-41f6-89ea-0fd67666dd05@kernel.org> Date: Wed, 9 Jul 2025 15:58:58 +0200 Precedence: bulk X-Mailing-List: linux-efi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] efi: add ovmf debug log driver To: Gerd Hoffmann , linux-efi@vger.kernel.org Cc: Ard Biesheuvel , open list References: <20250708125624.734132-1-kraxel@redhat.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 08/07/2025 14:56, Gerd Hoffmann wrote: > +MODULE_DESCRIPTION("OVMF debug log"); > +MODULE_AUTHOR("Gerd Hoffmann "); > +MODULE_LICENSE("GPL"); > +MODULE_ALIAS("platform:ovmf_debug_log"); > diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig > index db8c5c03d3a2..ac0a03ec3452 100644 > --- a/drivers/firmware/efi/Kconfig > +++ b/drivers/firmware/efi/Kconfig > @@ -263,6 +263,14 @@ config EFI_COCO_SECRET > virt/coco/efi_secret module to access the secrets, which in turn > allows userspace programs to access the injected secrets. > > +config OVMF_DEBUG_LOG > + tristate "Expose OVMF firmware debug log via sysfs" > + depends on EFI > + help > + Recent OVMF versions (edk2-stable202508 + newer) can write > + their debug log to a memory buffer. This driver exposes the > + log content via sysfs (/sys/firmware/efi/ovmf_debug_log). Where did you document new ABI? Best regards, Krzysztof