From nobody Tue Dec 16 18:33:12 2025 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 7C9CFC4167B for ; Fri, 8 Dec 2023 18:13:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233795AbjLHSMx (ORCPT ); Fri, 8 Dec 2023 13:12:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229811AbjLHSMv (ORCPT ); Fri, 8 Dec 2023 13:12:51 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA02390; Fri, 8 Dec 2023 10:12:57 -0800 (PST) Date: Fri, 08 Dec 2023 18:12:55 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1702059176; 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; bh=VPq10NsC/rF3pTsW5VwJxHxpL7DlSSTW9H4lmsDaLFM=; b=Ow8pyzuL1flnJc492kWFDsRoQhzA2qs52/Kd1Pt2ViOe3IdnAC8QHHKmmZDFiUEfX/xzht Ly9RugGP05HXyVeAWBXdyCt9a8zzI3YYl69WlHc62MTp+MWIDN9KroFUpfuHyV3VAyGsbW y+w/omIeB0MVcEoSULMsyLEKzNInfLwApT0e5jbXm8bkG9gT4pF8GV4A43ewuLBJtWbXsf KZFfG/TAuw9SyX0tndhBm5Q7ILQBwSpo7sHnUs3EGB/K9bxMaZ8MjRz57Vxf3RgecqOAI8 X5s2AzCXUTWTUQD6QueCS2QUx7T8KFhiDcbDT54FqGC4v8D9gcgzam/cPAmKMw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1702059176; 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; bh=VPq10NsC/rF3pTsW5VwJxHxpL7DlSSTW9H4lmsDaLFM=; b=SQ6OuEP8WsP0VeRP58uaT93aL/b8C51hnIWUvRMS8ZhwSLNorh2pYXKXIqaXouc9L4ujK6 MqU5q9wyCqDVzoAg== From: "tip-bot2 for Jo Van Bulck" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/sgx] selftests/sgx: Remove incomplete ABI sanitization code in test enclave Cc: Jo Van Bulck , Dave Hansen , Jarkko Sakkinen , x86@kernel.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Message-ID: <170205917549.398.11664796877429502969.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/sgx branch of tip: Commit-ID: 886c5be0b12e89b2905c26c4f24d50ae91f261da Gitweb: https://git.kernel.org/tip/886c5be0b12e89b2905c26c4f24d50ae9= 1f261da Author: Jo Van Bulck AuthorDate: Thu, 05 Oct 2023 17:38:54 +02:00 Committer: Dave Hansen CommitterDate: Fri, 08 Dec 2023 10:05:28 -08:00 selftests/sgx: Remove incomplete ABI sanitization code in test enclave As the selftest enclave is *not* intended for production, simplify the code by not initializing CPU configuration registers as expected by the ABI on enclave entry or cleansing caller-save registers on enclave exit. Signed-off-by: Jo Van Bulck Signed-off-by: Dave Hansen Reviewed-by: Jarkko Sakkinen Link: https://lore.kernel.org/all/da0cfb1e-e347-f7f2-ac72-aec0ee0d867d@inte= l.com/ Link: https://lore.kernel.org/all/20231005153854.25566-14-jo.vanbulck%40cs.= kuleuven.be --- tools/testing/selftests/sgx/test_encl_bootstrap.S | 16 ++------------ 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/tools/testing/selftests/sgx/test_encl_bootstrap.S b/tools/test= ing/selftests/sgx/test_encl_bootstrap.S index 28fe5d2..d8c4ac9 100644 --- a/tools/testing/selftests/sgx/test_encl_bootstrap.S +++ b/tools/testing/selftests/sgx/test_encl_bootstrap.S @@ -59,21 +59,11 @@ encl_entry_core: =20 push %rcx # push the address after EENTER =20 + # NOTE: as the selftest enclave is *not* intended for production, + # simplify the code by not initializing ABI registers on entry or + # cleansing caller-save registers on exit. call encl_body =20 - /* Clear volatile GPRs, except RAX (EEXIT function). */ - xor %rcx, %rcx - xor %rdx, %rdx - xor %rdi, %rdi - xor %rsi, %rsi - xor %r8, %r8 - xor %r9, %r9 - xor %r10, %r10 - xor %r11, %r11 - - # Reset status flags. - add %rdx, %rdx # OF =3D SF =3D AF =3D CF =3D 0; ZF =3D PF =3D 1 - # Prepare EEXIT target by popping the address of the instruction after # EENTER to RBX. pop %rbx