From patchwork Mon Jan 16 14:25:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Zijlstra X-Patchwork-Id: 13103295 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E7E91C54EBE for ; Mon, 16 Jan 2023 14:38:11 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.478648.741983 (Exim 4.92) (envelope-from ) id 1pHQca-0003CT-9C; Mon, 16 Jan 2023 14:38:00 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 478648.741983; Mon, 16 Jan 2023 14:38:00 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pHQca-0003C1-2p; Mon, 16 Jan 2023 14:38:00 +0000 Received: by outflank-mailman (input) for mailman id 478648; Mon, 16 Jan 2023 14:37:58 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pHQcW-0002Pk-Pb for xen-devel@lists.xenproject.org; Mon, 16 Jan 2023 14:37:58 +0000 Received: from desiato.infradead.org (desiato.infradead.org [2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 5cd572d9-95ab-11ed-b8d0-410ff93cb8f0; Mon, 16 Jan 2023 15:37:55 +0100 (CET) Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1pHQc7-005csx-17; Mon, 16 Jan 2023 14:37:32 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id E1E283007C5; Mon, 16 Jan 2023 15:37:38 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id A94B22081B292; Mon, 16 Jan 2023 15:37:38 +0100 (CET) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 5cd572d9-95ab-11ed-b8d0-410ff93cb8f0 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Subject:Cc:To:From:Date:Message-ID: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To:References; bh=myQj/MBdPle3LrkO0rdNRoaNXUdtePdBjz6BKLQ5f+E=; b=FLqszaemcNeksY+EzWYCNg5GsL /G5G9NGNsU5jSnXxmUVfg9zG6N/3rGrhBPe83E3mCwQJwFiPtv8xLfUsSjfoBhZsvFtKTQ1zUjPJn loCzDMF4bI22KL1b9sTSVxk7fHjzXBVSse/Lwsv3dC7P30UtJgbySM1qUCQ7MOTR2TwOglVOWs9hT 33DfxsJhDNCZvED7aBcJBwNHXcILUuCh/DHiTwhRVuw4HWX/ilGletp3oUrAu2C5nKWm5xshkfTdK qREZO4eRXzw9xnacQMHb2wRGQM7vUlh1iTHsSlwu3j+0/G5iySYxx1czWr0FWKGo1MB1E/AVje45d zxW+5voA==; Message-ID: <20230116142533.905102512@infradead.org> User-Agent: quilt/0.66 Date: Mon, 16 Jan 2023 15:25:33 +0100 From: Peter Zijlstra To: x86@kernel.org, Joan Bruguera Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, Juergen Gross , "Rafael J. Wysocki" , xen-devel , Jan Beulich , Roger Pau Monne , Kees Cook , mark.rutland@arm.com, Andrew Cooper , =?utf-8?b?SsO2cmcgUsO2ZGVs?= , "H. Peter Anvin" Subject: [PATCH v2 0/7] x86: retbleed=stuff fixes Hi all, Patches to address the various callthunk fails reported by Joan. The first two patches are new (and I've temporarily dropped the restore_processor_state sealing). It is my understanding that AP bringup will always use the 16bit trampoline path, if this is not the case, please holler.