From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CD6482F9DA1; Wed, 22 Jul 2026 02:57:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784689026; cv=none; b=FagxaAri4qrnC1jQLV0Fo6lh0sWOyt7gM3ZkEq7hLpHO3zSzC3VfYWwCFHJCLZQc2WH3kc+sgLuwqC85qANL23dnv5kK4Oe7MMowXGXY+iSNfj1xVCMKtnFyYdnwIg4TULTh29VrlIS5AYqIcUPLAWXu8330x0m1LDjYwcTavT8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784689026; c=relaxed/simple; bh=VwJapekecAXHgGnnfP97mMYGCse/AU5iXOGSSkwy9KM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pihwo8JXaLqymu79yDlhRFzrS/YNeegEs++s/xXhiOLqUhQ+8eh8YI06K7YLU2yQqTjWjJTMEQNdLNc3j4ddfhmFejsV0WtnS/KrxEISWV1nolqYdNsmnOLY84lL1l+AXtVBouAa+HlTDMGUwbQW+4q1hdzvAzSwSCFRjVmCKPQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UFDWfWv6; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UFDWfWv6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 16AD51F00A3A; Wed, 22 Jul 2026 02:57:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784689023; bh=oL6B5yPI6RwB5+xPva+ODmso/yiH1ltTXoqrZzoHznU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=UFDWfWv69ybbfOfa1zOvIZFDT+fkK/woXMaYNn9stCiuyLO5eTEZy03GgR/W051JA aze22L4emlU3viROLhJuSJyyg3Vl6G1Akxy/NnaZI4l3x+x5a8vRMF80IUWy81fhLX feF1dYuVyxvNByXgfIFJy4DwKew+PhlEzArVAsCoFYYQatb0R8DIFNsVUo43EHe9wx c832KyMRvPsLELPG1cNPk/RyQe3aZlrKfo3ccmkmLuynK4eWpZhPTi6cLcslCnPqCM 5jUXBw2YQRe31ms6VLNzElFPtBKJ7wNgpP8/X8wXpZX2TNIh+Q8RN3/RDIrH2TVEYd B5kxiYWPpYk3g== From: Eric Biggers To: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Ard Biesheuvel , "Jason A . Donenfeld" , Herbert Xu , x86@kernel.org, Borislav Petkov , =?UTF-8?q?Carlos=20L=C3=B3pez?= , Alexey Kardashevskiy , Eric Biggers Subject: [PATCH 2/3] x86/sev: Remove obsolete virtual address check Date: Tue, 21 Jul 2026 19:53:37 -0700 Message-ID: <20260722025338.33354-3-ebiggers@kernel.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260722025338.33354-1-ebiggers@kernel.org> References: <20260722025338.33354-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Virtual addresses used with the AES-GCM library don't have to be in the linear mapping. Remove the virt_addr_valid() checks from snp_send_guest_request(), which were a workaround left over from when this code used crypto_aead, which required scatterlists. Signed-off-by: Eric Biggers --- arch/x86/coco/sev/core.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c index 54b122f6ef96a..cc292d7c6fd1e 100644 --- a/arch/x86/coco/sev/core.c +++ b/arch/x86/coco/sev/core.c @@ -1867,15 +1867,6 @@ int snp_send_guest_request(struct snp_msg_desc *mdesc, struct snp_guest_req *req u64 seqno; int rc; - /* - * enc_payload() calls aesgcm_encrypt(), which can potentially offload to HW. - * The offload's DMA SG list of data to encrypt has to be in linear mapping. - */ - if (!virt_addr_valid(req->req_buf) || !virt_addr_valid(req->resp_buf)) { - pr_warn("AES-GSM buffers must be in linear mapping"); - return -EINVAL; - } - guard(mutex)(&snp_cmd_mutex); /* Check if the VMPCK is not empty */ -- 2.55.0