From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dl1-f74.google.com (mail-dl1-f74.google.com [74.125.82.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 65A7F44D030 for ; Thu, 26 Feb 2026 19:18:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772133541; cv=none; b=UWtrFql+Ycj6lZRqQWxuPUQRy7gZWZfdF/k3sZ9+9L3TXB8+0TjdKa1ZzmnxsPNCx3SNsQMNy0mMLTKuE+0m0An/LSTyUyLQzHe2A9tRnM2JpLKcuNF6jViui/iW42Wzq016ZRJn9jv7KkPZrnmLZWDO75H9ADZxmqrfYLG31so= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772133541; c=relaxed/simple; bh=ez64bCuoweewc8TFXxLPJ8F6ak5SKAlGE1LrbX7Hubc=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=YbOSob7tlv2QRSch0DG7GA4UqoaHSeDXIK3j+t752VrcCOMIxGs452hcIGEzbEVPcfRE44HzZ4suZQhx6dyh39KmHxAaTn0yKaBI5FVu8m62FPl3B3tloRP0V6jdCSxOJLJz7Q9fH7zNHa7yRJi5wQvSLXbjdv1Un6rKSZ5AVoE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--changyuanl.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=gC/J3GcB; arc=none smtp.client-ip=74.125.82.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--changyuanl.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="gC/J3GcB" Received: by mail-dl1-f74.google.com with SMTP id a92af1059eb24-12734af2ca4so1638016c88.0 for ; Thu, 26 Feb 2026 11:18:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1772133537; x=1772738337; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=ez64bCuoweewc8TFXxLPJ8F6ak5SKAlGE1LrbX7Hubc=; b=gC/J3GcBy/L6pOCU7gVnJ/tYbL/y49WzH3JDNq/MnOyEgLKWxWm4tF6tIJGuu3soe1 bDJd6qgmBFJVXcrAtB8LbDZR3eAiRYuVxM60y8K51+u+hLoS7stV8OJqGG+i2sQFw3HY r7klQYYx8d+HLusYqNknzgkXZgeE/hBhQwtAkgak7Ly+Xqe3HeIcXDC+NHrhTAnpvBJr W4C6ikJZGjY32xnkBPWb+lc2HSpZ/GJ78VoUlWj1ivwl/XvqQvopfODD/9rbVhZKjvk6 HaG9+CxC7N3IJBaLuNPsbzlA/IhoqG0VBh6fsD9TkW1o9lWadRMbICtuWRSnjfR+pxv/ h9eQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772133537; x=1772738337; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ez64bCuoweewc8TFXxLPJ8F6ak5SKAlGE1LrbX7Hubc=; b=oZ0DTZZHf/EQrJVa3Gf15C7FhAD6Q7V4kZ/crPo5xzZ8hC8Rt96KJS8GV0LVSZGUnU 3/WcPqolYMC8onaD6XuoHr+fdSOKBnWMHPRnEuNajfmpbcPqx47U7GSS/BXzb6kBIXVk vR3myROR+WUGewixZeRLb3vCzZATDIZ4bhHb+cDXlOsBfatlVEYNkET312+wW2CGgwSX E6CXYDp4AcSQJ1qpw+zFv4316GjarGz05OanTm4VsFkEKHktaJiSMvpyCU19AqHXnJxc uuFPjYp1C8+8Ph51vjjdnV/1kKMa1lvetiwhUot9tvLUH9B8IHyAl+0C5PGcrKpGwdKd OaKQ== X-Forwarded-Encrypted: i=1; AJvYcCWtZlV0da/B7NnSHrN6/Y7Ha/8lvpIP0x7UYGktJ9Uq3J2NVkW2jws4zCkm9W+a3gHZ5SCub545l8hKQYU=@vger.kernel.org X-Gm-Message-State: AOJu0YxEZ/IqWXFz4Ehu0bnjvf5godR327zorxNtEEadDGnOIrkZVrQd hVzDQcRJ0z/kXAMvgW76yu4snCX/Qrms5LtdHBxGpWc0tRVzhgY/wuh6fZEguvDZnTnNI/hvuPu PaZmM846SZHt9awm/Gb3ubA== X-Received: from dll11.prod.google.com ([2002:a05:7022:20b:b0:127:160e:f9d8]) (user=changyuanl job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:618e:b0:123:3a91:f563 with SMTP id a92af1059eb24-1278906bebbmr1472029c88.8.1772133537008; Thu, 26 Feb 2026 11:18:57 -0800 (PST) Date: Thu, 26 Feb 2026 11:18:55 -0800 In-Reply-To: <4c134316-2de3-45c4-adfb-826eff06d66c@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <4c134316-2de3-45c4-adfb-826eff06d66c@amd.com> X-Mailer: git-send-email 2.53.0.473.g4a7958ca14-goog Message-ID: <20260226191855.1963753-1-changyuanl@google.com> Subject: Re: [RFC] x86/boot: Fix early boot SEV-SNP panic in direct kernel boot From: Changyuan Lyu To: thomas.lendacky@amd.com Cc: ardb@kernel.org, bp@alien8.de, changyuanl@google.com, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, tglx@kernel.org, x86@kernel.org Content-Type: text/plain; charset="UTF-8" On Thu, 26 Feb 2026 07:59:31 -0600, Tom Lendacky wrote > On 2/26/26 00:07, Changyuan Lyu wrote: > > Hi all, > > > > I'm writing to report a regression introduced by commit 68a501d7fd82 > > ("x86/boot: Drop redundant RMPADJUST in SEV SVSM presence check") and > > to request feedback on the best approach to fix it. > > I submitted this back on Feb 4th... but it was close to the merge > window so it wasn't picked up at that time. Please review and comment. > > https://lore.kernel.org/lkml/5648b7de5b0a5d0dfef3785f9582b718678c6448.1770217260.git.thomas.lendacky@amd.com/ Thanks Tom! I should have found your patch earlier! I added my Reviewed-by. > Thanks, > Tom > > > [...]