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=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 96797C47080 for ; Wed, 2 Jun 2021 01:20:58 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5A337613CC for ; Wed, 2 Jun 2021 01:20:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5A337613CC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=soleen.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bjKrO1rdL9buA2+L0aYemh4OlCvSjPnJA98K4qXF5a8=; b=r+Qnbtdg972HO+ v3izxffPmtH/ehpFPfqlj+mVWz/eDlzxWNK5LJCwswnuPFkP5zOMntPkcayZEl6QYXPbwtSX9oLRL x2mW+QFgBlJatUI839JBfXpQ+QgUOYGYFjBMmboAy7gmFsjwArh7yIi3qmlDz0k3NCrGjKmq+GVgF X06x2wtv3TJBC+AsSE2kZPwL5qSnoY7+DNnImdYL7E7l7+0tOSCJwNVaHfdz3GZrCvyEgCI2+W6B3 BfxSItnF8qmNBZw9j12oB103NaJjUT2QgHKIaxqFqJvAKVjI5pW1GEXW/U+uvzO6KandPAKoCImsR 6nvJhOq8b4T169SQHf/A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1loFXo-001SaY-Hd; Wed, 02 Jun 2021 01:19:40 +0000 Received: from mail-ed1-x52f.google.com ([2a00:1450:4864:20::52f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1loFXj-001SXt-0k for linux-arm-kernel@lists.infradead.org; Wed, 02 Jun 2021 01:19:36 +0000 Received: by mail-ed1-x52f.google.com with SMTP id o5so865685edc.5 for ; Tue, 01 Jun 2021 18:19:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soleen.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=MDyyOOU0l27yFmi9xpWkaC5jfraGYI47BaflHO+G+r4=; b=iHmCcSyzzhwTVSi58cQ4JCOdZhSNRuwp+fX3DkSawsOIwULFUe2JRdGvXGpNIU0MMN /1jtrCm3toPkMDIodBU6lDfW+mgUdj74u2xU1GM5e64cGEvSCKc8RPWVCDlroT89m0oX n7vItLfNFJitAWwBcbviDN0u+kb44JyA7ZH1Z6zP5gqXf383czeKql4UgpMu+QVXuPQg Mtev3O8CxYFS1GR23pCPHX6YNzofRkNr7Msldg5Z2KBuyDHLsTR/w/xPiREN7jMihHPj uN+dswg8H5P1f/NmFrFTb5RSAluWEMdZyO0UZY83wTX1Wrl6Fw7btGlfaugmC2YuUOia shuQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=MDyyOOU0l27yFmi9xpWkaC5jfraGYI47BaflHO+G+r4=; b=I3yIdVAi0uhCUVftSlXQjNCEL4jzfptuHc0ANNPnv49aHe31R5mK1DgXqvaN3S5IOP t34SIX/XSHQn9wh3OGQnt2Os7xlPZtGzpSdbcc/t3KR9dxbY6jYWxLu8mPxm3daMr54j IHKUKqtCmsGKDTAf84A+5GlSyHVOntmrU3yTGJS/TFRLeS10Bau3k6LDfbItyTh4is51 MkOl6U/HiKR9OC+GjMHFF9j+XsgT/T3tQDF+JLOPg1xFARV76JU+njHMqqjoB19VtQGr Vb0f/FtQSVvlaR5w9K0cgmuH9T/eDwVC47jLA1BTszS1uyzl/AkVL4JzP3Ol9R6w6kIr oHbA== X-Gm-Message-State: AOAM532lukiTjbpwbSXcU1pjcADL4dIqGfyYMC8ZszTP2wJeZxRl58Um pLMRTjmVgeOXavLmAz0X5x5/lKQQslmX5omy/x9Qfg== X-Google-Smtp-Source: ABdhPJwfcbj66YCKvYsiCkueyitZ2M4CytwYWerYVBWpBpoKXbmt7/54D/wedq0vndWO1TKP+ftLAdkz69R0rPld/ZY= X-Received: by 2002:a05:6402:510b:: with SMTP id m11mr35350762edd.26.1622596770646; Tue, 01 Jun 2021 18:19:30 -0700 (PDT) MIME-Version: 1.0 References: <20210527150526.271941-1-pasha.tatashin@soleen.com> <20210527150526.271941-4-pasha.tatashin@soleen.com> <87sg28rx3c.wl-maz@kernel.org> <87r1hl22qm.wl-maz@kernel.org> In-Reply-To: <87r1hl22qm.wl-maz@kernel.org> From: Pavel Tatashin Date: Tue, 1 Jun 2021 21:18:54 -0400 Message-ID: Subject: Re: [PATCH 03/18] arm64: hyp-stub: Move elx_sync into the vectors To: Marc Zyngier Cc: James Morris , Sasha Levin , "Eric W. Biederman" , kexec mailing list , LKML , Jonathan Corbet , Catalin Marinas , Will Deacon , Linux ARM , James Morse , Vladimir Murzin , Matthias Brugger , linux-mm , Mark Rutland , steve.capper@arm.com, rfontana@redhat.com, Thomas Gleixner , Selin Dag , Tyler Hicks , Pingfan Liu , Andrew Morton , madvenka@linux.microsoft.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210601_181935_104419_FB35A696 X-CRM114-Status: GOOD ( 16.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > > It cannot call mutate_to_vhe because #HVC_VHE_RESTART is not used > > here. But, if it had to it would not work as we cannot return to the > > old kernel text after relocation. > > OK, so you are happy with having a dangling branch pointing to > nowhere? Something in me screams that it isn't a good idea, in > general. > > If HVC_SOFT_RESTART is all you need, I'd rather you have a small stub > that implements exactly that and nothing else. Feel free to extract it > as a reusable macro if you want. Sure, I will add in the next revision. Thanks, Pasha _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel