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 E81571B4159; Tue, 13 May 2025 10:02:27 +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=1747130548; cv=none; b=khWlYfoAtZvy2Z66tidn7oz+r2H+2ow7rKBFjtMU+VYtaNO/IeJnUo/YdqUQAHmn3WB5mPaAzGKvSOeP04UB0yZg4qKhUPyohQVuY505XXCoCJ5LBhCaOdNZEDzipHFY4aqGnT5oM8XeKW3pVVNEAGmHgiMNeUgNoZ2PbYYaWUk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130548; c=relaxed/simple; bh=M7yC5gonucPh1l67fzVqttNOeD8QRYITN3RB/I7G3XQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=eut6L7rBitDsFvJe5yfxvarFDab1FkGjTrlMnXG2XsoQM5U3X69LkHJ7AeMbD+uuGEFT+cmmt5w3eHxPXXZDeWJC5heoLAm4awdy2GUoUiR8r4397sA2MrzNulji/GJI2IWukHwj3If3m17x8YsSaz8GIyJeAz+OzOWRrKh2LLw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B93nRF2F; 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="B93nRF2F" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 167DCC4CEED; Tue, 13 May 2025 10:02:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747130547; bh=M7yC5gonucPh1l67fzVqttNOeD8QRYITN3RB/I7G3XQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=B93nRF2FEnevVm2OKxuN5M7Jwdgraa4JcjF78RgQvzVgQNPreorB9HgYh5Heoly+N lxVijv1t0n36BmQJg5Ez5OcERJ0B4aGllkRoesUkoN3kbsA1grVTBRIFoTV3G48UBb npuVCDrlqV6o1liJALhxMnw7rQosbKe7tIhTUsBl8/xihBDSzHvxj8OVzmFNq7uzDK XzVHo0hGKH9P770YqfQ0Sgn0EItEpMFDReClb9Lhaj6AofCrfaHTTUZo7+yryon6uD lqV6LjFLoiX9A1YuvIOCTllYlJ67HwagBqnywS5YxPznuQ9POhlBG+DlVClXJF8R1x T55NLATh6kzLw== Date: Tue, 13 May 2025 12:02:22 +0200 From: Ingo Molnar To: Borislav Petkov Cc: Ard Biesheuvel , linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , Dionna Amalie Glaze , Kevin Loughlin , Tom Lendacky , Linus Torvalds Subject: Re: [RFT PATCH v3 00/21] x86: strict separation of startup code Message-ID: References: <20250512190834.332684-23-ardb+git@google.com> <20250512191705.GHaCJJMcpPTS4ioLpm@fat_crate.local> Precedence: bulk X-Mailing-List: linux-efi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250512191705.GHaCJJMcpPTS4ioLpm@fat_crate.local> * Borislav Petkov wrote: > On Mon, May 12, 2025 at 09:08:35PM +0200, Ard Biesheuvel wrote: > > From: Ard Biesheuvel > > > > !!! Boot tested on non-SEV guest ONLY !!!! > > ... > > > !!! Boot tested on non-SEV guest ONLY !!!! > > > > Again, I will need to lean on Tom to determine whether this breaks > > SEV-SNP guest boot. As I mentioned before, I am still waiting for > > SEV-SNP capable hardware to be delivered. > > Ingo, please do not rush this stuff in before Tom and I have tested it > successfully with SEV* guests. > > Thanks! I don't intend to rush it, but note that AMD's SEV-SNP testing is lagging a *lot* at the moment: Ard asked for testing the -v2 series on May 4: https://lore.kernel.org/r/20250504095230.2932860-25-ardb+git@google.com That request for testing was ignored AFAICS. It's May 13 and still crickets. We also had SEV-SNP boot bugs pending since August 2024, that nobody but (eventually) AMD triggered. Ie. very few people outside of the vendor are testing SEV-SNP AFAICS, and even vendor testing is sporadic ... Please ask AMD internally to get SEV-SNP tested more reliably. Testing this -v3 series would be a good start. Hint, hint. ;-) Thanks! Ingo