From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0F7CC433E0 for ; Sun, 7 Mar 2021 11:03:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC3B765180 for ; Sun, 7 Mar 2021 11:03:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230111AbhCGLCh (ORCPT ); Sun, 7 Mar 2021 06:02:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231883AbhCGLCg (ORCPT ); Sun, 7 Mar 2021 06:02:36 -0500 Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE478C06174A for ; Sun, 7 Mar 2021 03:02:35 -0800 (PST) Received: by mail-pf1-x432.google.com with SMTP id 16so3809743pfn.5 for ; Sun, 07 Mar 2021 03:02:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=fGQzsTwieGJ+UsLlk4kxZajLdbBFP7Z9G/rD+ogP0AI=; b=jJuzCq5vFClSpvp5DuROAFTlcSJqNeusrx5aG+tDb8KJ6vMNJZNHABUSwZngPxsIiC +37MlDiEyx3159XFurcZxJFG6Qcb4zjjANOBz7sxIyiuxwPl6LbmyaGnKkndsLW3SpkQ kcxn/oc1AewVX/LdHFHdPedmBLaBuNzkGFTNixksBP0AX70Vww5rEhwEulfbENv8VzIj xW6nD+ToTtUgaUaJbH+fjgQK9iVwNj76upQzIteRGfRSbAPIQ4DeX8eBKLIpi5HOfj7X jDoRs+viipI3a5yzllZebmbXlKRKdMQfBay1hHYG9zBeFyUEasmqUsECXoKgdrwkGhYq G4dA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=fGQzsTwieGJ+UsLlk4kxZajLdbBFP7Z9G/rD+ogP0AI=; b=kqLP3WijEdE+HkpwkP+JIoRYLGFf5DIsfRo7qA4jLXGgzfnutpjTEq7DXbEtOeA2TV l1azU/kLOBVfSBVAUHWbqwRmOfhyDArxJ+VnTaKYcD11C0XzfHY9zNaWwbOt0e8O3xao Wp3IdoDYhIs8LHKPqvlz4Y3RraJDWiNVM3TpeIE1NdUDvxty/tXA2mXSok75SZ5DF811 MZrtMtWpzmC2hTYFk82n1Fm8BPfKzfRdujdOVSLW8UMqcV60s6em5bOssBtKstjW3vzM jJz92wsgTgygsst5nAj/d3BFxs0UKFLrZiHgl0vSPvcjiyowpKG1hZxOEIe4WuKaD2Qu EjMQ== X-Gm-Message-State: AOAM5308W0aogAbPCENFMLKzSOBEAjegnjOpSTZ3k+QQj+Xqbs7V1Ayf Ld+Xyp3y2lXSRPF176G/NXQ3og== X-Google-Smtp-Source: ABdhPJzw69vmH0tOiY3QhD5ZExxRFZEu2NUGV17EJAY/jeV7bnDxWXkjlFRl3V+MwwUh6aayB7lkSA== X-Received: by 2002:a63:1d5b:: with SMTP id d27mr11870099pgm.169.1615114955342; Sun, 07 Mar 2021 03:02:35 -0800 (PST) Received: from dragon (80.251.214.228.16clouds.com. [80.251.214.228]) by smtp.gmail.com with ESMTPSA id x4sm212115pfn.134.2021.03.07.03.02.33 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sun, 07 Mar 2021 03:02:34 -0800 (PST) Date: Sun, 7 Mar 2021 19:02:29 +0800 From: Shawn Guo To: Ard Biesheuvel Cc: linux-efi@vger.kernel.org, Jeffrey Hugo , Bjorn Andersson , Rob Clark , Leif Lindholm , linux-arm-msm@vger.kernel.org Subject: Re: [PATCH] efi: stub: override RT_PROP table supported mask based on EFI variable Message-ID: <20210307110228.GP17424@dragon> References: <20210306113519.294287-1-ardb@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210306113519.294287-1-ardb@kernel.org> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org On Sat, Mar 06, 2021 at 12:35:19PM +0100, Ard Biesheuvel wrote: > Allow EFI systems to override the set of supported runtime services > declared via the RT_PROP table, by checking for the existence of a > 'OverrideSupported' EFI variable of the appropriate size under the > RT_PROP table GUID, and if it does, combine the supported mask using > logical AND. (This means the override can only remove support, not > add it back). > > Cc: Jeffrey Hugo , > Cc: Bjorn Andersson > Cc: Shawn Guo > Cc: Rob Clark > Cc: Leif Lindholm > Cc: linux-arm-msm@vger.kernel.org > > Signed-off-by: Ard Biesheuvel Awesome, Ard! On both Lenovo Yoga C630 and Flex 5G latops: Tested-by: Shawn Guo With 'OverrideSupported' EFI variable added from UEFI Shell, we can drop 'efi=novamap' kernel cmdline and get around the broken poweroff runtime services nicely. Thanks! Shawn