From nobody Thu Apr 9 06:20:28 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D6EF2C4332F for ; Wed, 2 Nov 2022 15:19:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230434AbiKBPTO (ORCPT ); Wed, 2 Nov 2022 11:19:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58812 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230306AbiKBPSx (ORCPT ); Wed, 2 Nov 2022 11:18:53 -0400 Received: from mail-pg1-x549.google.com (mail-pg1-x549.google.com [IPv6:2607:f8b0:4864:20::549]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5787EE12 for ; Wed, 2 Nov 2022 08:18:49 -0700 (PDT) Received: by mail-pg1-x549.google.com with SMTP id w191-20020a6382c8000000b0045bf92a0b5aso9655380pgd.22 for ; Wed, 02 Nov 2022 08:18:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=qaiHnucIuESfgaU82SYs4BBLu5lj4TzR9ZvyujAVUhw=; b=ks6DEiY7Yjv82ixwPD+aLivrFmZgJi9a6H7mv4TZxFHnfBcEscfr1HjMkr3s1Q8bP0 YC66C654TPJ69cHNKSx7a2UoJEJJ7g6Gv4c3ZevWz0zmyxZNNyM9YjKRE4lC7j3Nw9VZ xzTxMEEYkKLl6EmAI/vhSViP+b3XePn0rvF9X3B0hfB0wauSF52j7MS1gbHNwsN4SQqI uvnLLDqIJg2jayeD1MWWpMPUxB+BYIlwj2uK0l6mphmMC4eEcGPXtuBE4SPXja20hh9C 96PrBNEPSJolYqCA2NXwQx04/zZwjH5vRQDKJxDBQ8a/BQXwAUDGY4O/JPjYh7+gr1Ho Bn5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=qaiHnucIuESfgaU82SYs4BBLu5lj4TzR9ZvyujAVUhw=; b=E9UQzz3nDxlTLOQCVXD0O0+AojOwFMZ8h3/krttzz6lShm5P+9OB5IhH2e03l7yCvf PKude57O9lZPIluJrgOdSaQR5wJRYNsgbzEfbtLVGabr02NEXkznQzPAxUK3VqsONwTZ prrqtG8UjnWTdqWOYcHpPJbrnVct4Mt/HmDJkucCWZ2sgSgy+t+BktGY6mqpU3GKesal dwWTaHS97DcvqItzIf2a19420UFk3Txoig3JCmmcJaaLcVE4Cnec6bHn487ntgn0hc1Y fg1VKJeV0LTggFEPdhvLzyUs/SDwPJMxh+prQH2BHt39jlwqfHjwKx+y2pdpBbz5fDBs ZSSg== X-Gm-Message-State: ACrzQf0kuUozVQO5Zx6OaiCe7NCEKcDRR4yxhnttsgWNFQ87HaZ7jVEP pZJqKpIZOSnS0F9SCRvwN3NtAJh8axiPquRJKSSCygKtX9LZFxKEhdB7v6CKYdqWrQbrY511tdO F92gvYe8XrwVW+UnLrCeA3pWA3skfNjXpFy9p3Fj77hRUdb4bTwcXm4+6BzT6ybF/rLgoqe3Jh2 rChIowSeU= X-Google-Smtp-Source: AMsMyM7l8krDcdu95IlWeiGEMc7ghRttgd/8fL8ps9BgNBAbMwb5TlsoMItVIGuun6d0S0GN9ruKVqzTfko9ou6pjw== X-Received: from dionnaglaze.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:2ee6]) (user=dionnaglaze job=sendgmr) by 2002:a05:6a00:10cf:b0:563:34ce:412f with SMTP id d15-20020a056a0010cf00b0056334ce412fmr26111677pfu.67.1667402329297; Wed, 02 Nov 2022 08:18:49 -0700 (PDT) Date: Wed, 2 Nov 2022 15:18:33 +0000 In-Reply-To: <20221102151836.1310509-1-dionnaglaze@google.com> Mime-Version: 1.0 References: <20221102151836.1310509-1-dionnaglaze@google.com> X-Mailer: git-send-email 2.38.1.273.g43a17bfeac-goog Message-ID: <20221102151836.1310509-2-dionnaglaze@google.com> Subject: [PATCH v5 1/4] ccp: Name -1 return value as SEV_RET_NO_FW_CALL From: Dionna Glaze To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Dionna Glaze , Thomas Lendacky , Paolo Bonzini , Joerg Roedel , Ingo Molnar , Andy Lutomirsky Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The PSP can return a "firmware error" code of -1 in circumstances where the PSP is not actually called. To make this protocol unambiguous, we add a constant naming the return value. From: Peter Gonda Cc: Thomas Lendacky Cc: Paolo Bonzini Cc: Joerg Roedel Cc: Ingo Molnar Cc: Andy Lutomirsky Signed-off-by: Dionna Glaze --- drivers/crypto/ccp/sev-dev.c | 2 +- include/uapi/linux/psp-sev.h | 7 +++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 06fc7156c04f..97eb3544ab36 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -444,7 +444,7 @@ static int __sev_platform_init_locked(int *error) { struct psp_device *psp =3D psp_master; struct sev_device *sev; - int rc =3D 0, psp_ret =3D -1; + int rc =3D 0, psp_ret =3D SEV_RET_NO_FW_CALL; int (*init_function)(int *error); =20 if (!psp || !psp->sev_data) diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h index 91b4c63d5cbf..1ad7f0a7e328 100644 --- a/include/uapi/linux/psp-sev.h +++ b/include/uapi/linux/psp-sev.h @@ -36,6 +36,13 @@ enum { * SEV Firmware status code */ typedef enum { + /* + * This error code is not in the SEV spec but is added to convey that + * there was an error that prevented the SEV Firmware from being called. + * This is (u32)-1 since the firmware error code is represented as a + * 32-bit integer. + */ + SEV_RET_NO_FW_CALL =3D 0xffffffff, SEV_RET_SUCCESS =3D 0, SEV_RET_INVALID_PLATFORM_STATE, SEV_RET_INVALID_GUEST_STATE, --=20 2.38.1.273.g43a17bfeac-goog