From nobody Sat Oct 4 14:35:20 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 0E8592DCF60; Fri, 15 Aug 2025 09:05:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755248722; cv=none; b=WowTjVRP0LL1X1273FyJWe2+sKGZaW3HT/C5moIUPK6dLa4r0vrs5BN2kADfxYCUUZ8T0HTSmwv/9+qH/xKAQNwnn9gxIul3aWyOF1eL6PYPl3ZpZgDzLgPAchtlNUStpaEFaZH5hQRc4d1rp/+YIA6LacQQ7CxOr2mBW85dKi4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755248722; c=relaxed/simple; bh=9rGFE7kqsbowEhDsZAifbWOaYU2ubO9Rg2SpSVzyIlk=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=jGVf8Z1hDAhOkMPlKDOkoffB3pWvqcjuJqYxiQqEn0YozTDoWKAlzDjAEqlJQH3gdpF6NjPb996ZIX0cuRNgCeSxCB6D+kY02YdO//XsNTniX/y/R9dx/hzFr8xhsrUzZlYANtvcxVqJn4wPbHRe5mjPr9CXgfTsQpOD7he3EYE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=sSOxTuLd; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=mbIOxlwv; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="sSOxTuLd"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="mbIOxlwv" Date: Fri, 15 Aug 2025 09:05:15 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1755248717; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=00XaF3NhAN+6fMS8G1nY4QZ/ll3bKjnEZFC8D7o7GOg=; b=sSOxTuLdhUPyYXoX8608gYmQRw0hpRSmi+Bcfj69c1R3DBwuANlHHYZ4D0J+TdPryv6wbL EFrUyi87R3XCc7tmnnvP+i6q5B+S1s+aKKk+7eHbvpgrM5gZW744Qq5IUto43wsoZMhWKn V5Xj8RFJkPjXZAacHkM0IUV9q9+lqOAg6Lmn1JffJVV/Hq+gvUwN/F9jf0DWrJlqRuNt4S 7KIce1P5PM643yQZ7Qcp/Ev/PMMIEQHJWiIddBgQjG2riHlnQpRKgJSoURnSk6JqAG6eLU i2E1WkMfIb+Ltl4NNx8/a4LXLK84OzwFjxlXPdXAKHZ5+KydA7k3f/bFz8YKjw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1755248717; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=00XaF3NhAN+6fMS8G1nY4QZ/ll3bKjnEZFC8D7o7GOg=; b=mbIOxlwvTueg/68lfuNN604ESWYE6MjWXeR/Umw7EfuZ8/ErcmqaUK/HLczRyhs3qhh61o x2EngQLuHFkwIuCw== From: "tip-bot2 for Tom Lendacky" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/urgent] x86/sev: Ensure SVSM reserved fields in a page validation entry are initialized to zero Cc: Tom Lendacky , "Borislav Petkov (AMD)" , Joerg Roedel , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: =?utf-8?q?=3C7cde412f8b057ea13a646fb166b1ca023f6a5031=2E1755098?= =?utf-8?q?819=2Egit=2Ethomas=2Elendacky=40amd=2Ecom=3E?= References: =?utf-8?q?=3C7cde412f8b057ea13a646fb166b1ca023f6a5031=2E17550988?= =?utf-8?q?19=2Egit=2Ethomas=2Elendacky=40amd=2Ecom=3E?= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <175524871566.1420.6970992850866287220.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/urgent branch of tip: Commit-ID: d3be079da81f08d8d7f3416119b03e173d4285d2 Gitweb: https://git.kernel.org/tip/d3be079da81f08d8d7f3416119b03e173= d4285d2 Author: Tom Lendacky AuthorDate: Wed, 13 Aug 2025 10:26:59 -05:00 Committer: Borislav Petkov (AMD) CommitterDate: Fri, 15 Aug 2025 10:50:01 +02:00 x86/sev: Ensure SVSM reserved fields in a page validation entry are initial= ized to zero In order to support future versions of the SVSM_CORE_PVALIDATE call, all reserved fields within a PVALIDATE entry must be set to zero as an SVSM sho= uld be ensuring all reserved fields are zero in order to support future usage of reserved areas based on the protocol version. Fixes: fcd042e86422 ("x86/sev: Perform PVALIDATE using the SVSM when not at= VMPL0") Signed-off-by: Tom Lendacky Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Joerg Roedel Link: https://lore.kernel.org/7cde412f8b057ea13a646fb166b1ca023f6a5031.1755= 098819.git.thomas.lendacky@amd.com --- arch/x86/boot/startup/sev-shared.c | 1 + arch/x86/coco/sev/core.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/x86/boot/startup/sev-shared.c b/arch/x86/boot/startup/sev= -shared.c index 7a706db..4ab0dbd 100644 --- a/arch/x86/boot/startup/sev-shared.c +++ b/arch/x86/boot/startup/sev-shared.c @@ -785,6 +785,7 @@ static void __head svsm_pval_4k_page(unsigned long padd= r, bool validate) pc->entry[0].page_size =3D RMP_PG_SIZE_4K; pc->entry[0].action =3D validate; pc->entry[0].ignore_cf =3D 0; + pc->entry[0].rsvd =3D 0; pc->entry[0].pfn =3D paddr >> PAGE_SHIFT; =20 /* Protocol 0, Call ID 1 */ diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c index fc59ce7..43ecc6b 100644 --- a/arch/x86/coco/sev/core.c +++ b/arch/x86/coco/sev/core.c @@ -227,6 +227,7 @@ static u64 svsm_build_ca_from_pfn_range(u64 pfn, u64 pf= n_end, bool action, pe->page_size =3D RMP_PG_SIZE_4K; pe->action =3D action; pe->ignore_cf =3D 0; + pe->rsvd =3D 0; pe->pfn =3D pfn; =20 pe++; @@ -257,6 +258,7 @@ static int svsm_build_ca_from_psc_desc(struct snp_psc_d= esc *desc, unsigned int d pe->page_size =3D e->pagesize ? RMP_PG_SIZE_2M : RMP_PG_SIZE_4K; pe->action =3D e->operation =3D=3D SNP_PAGE_STATE_PRIVATE; pe->ignore_cf =3D 0; + pe->rsvd =3D 0; pe->pfn =3D e->gfn; =20 pe++;