From owner-freebsd-current@FreeBSD.ORG Tue Nov 11 17:57:52 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 18BD0CEB; Tue, 11 Nov 2014 17:57:52 +0000 (UTC) Received: from mail-wg0-x235.google.com (mail-wg0-x235.google.com [IPv6:2a00:1450:400c:c00::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 9EDC0A; Tue, 11 Nov 2014 17:57:51 +0000 (UTC) Received: by mail-wg0-f53.google.com with SMTP id b13so12177063wgh.12 for ; Tue, 11 Nov 2014 09:57:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=uboINQi4/F0XxWvctxDPyHHco0mvik99ye/B74udM+c=; b=Mv/DmRT8IzCbMZgZOP6bO/OXmNx3RSXxFiPVQEN78MEKO2fuBlR1KsNLcIH21I9idP tTqeMfW1HJ9XYnlopI0/e52QTyjAxHmO10qkp/c10nWChthd8xS5I5SeyO4t6StSXC7Z Y47VU/XFCzwyR4u0TrqUFYx+5GDhmXUH3MS4tv4pwipuHd254jf7+R60+fCgqwTVSGEz 8h9AuMO//M7oEKxtuj1QXU80OBICbxFtY3RXTd1FJP41lo0UcFr7S509nAUC69LWRAuF jGDENxnQj6SUkrEEWElg/q9n6ZOOPeO30UNWLz5yV1itXuguUTY2dd56BA+CnLA5EVJ3 NQhA== MIME-Version: 1.0 X-Received: by 10.180.188.41 with SMTP id fx9mr41983197wic.59.1415728670021; Tue, 11 Nov 2014 09:57:50 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.216.106.136 with HTTP; Tue, 11 Nov 2014 09:57:49 -0800 (PST) In-Reply-To: References: Date: Tue, 11 Nov 2014 09:57:49 -0800 X-Google-Sender-Auth: bEhqQMC9ghyvVEXzxs33DdljGcs Message-ID: Subject: Re: HEADS-UP: amd64 UEFI boot is broken From: Adrian Chadd To: Ed Maste Content-Type: text/plain; charset=UTF-8 Cc: FreeBSD Current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Nov 2014 17:57:52 -0000 On 11 November 2014 07:12, Ed Maste wrote: > On 10 November 2014 20:17, Ed Maste wrote: >> UEFI booting is broken for amd64 as of r273582 (Oct 24). The symptom >> is an apparent hang after the loader transfers control to the kernel >> (no output from the kernel is observed). Until this is addressed you >> can checkout an earlier revision or revert r273582 locally. > > I have committed a workaround for this issue in r274382. The vt(4) EFI > framebuffer driver makes use of kernel infrastructure in a way that is > not correct, but works in practice, and this was caught by a new > assertion added in r273582. My change loosens the assertion to allow > efifb's use for now. > > We will need to fix the early framebuffer implementation in a subsequent change. Woo, thanks! -adrian