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[209.132.180.67]) by mx.google.com with ESMTP id b6si15365665pgd.292.2018.12.12.12.40.16; Wed, 12 Dec 2018 12:40:35 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=fZMeqYlv; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727210AbeLLUjH (ORCPT + 99 others); Wed, 12 Dec 2018 15:39:07 -0500 Received: from mail.skyhub.de ([5.9.137.197]:40088 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726297AbeLLUjH (ORCPT ); Wed, 12 Dec 2018 15:39:07 -0500 Received: from zn.tnic (p200300EC2BCDD800543C0EB17EF60A9B.dip0.t-ipconnect.de [IPv6:2003:ec:2bcd:d800:543c:eb1:7ef6:a9b]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id C49221EC096B; Wed, 12 Dec 2018 21:39:04 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1544647145; h=from:from: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:in-reply-to:in-reply-to: references:references; bh=N8/nML7J9YWCZEPLBvyw7ybzW2xCelTfc1p83+z5wH8=; b=fZMeqYlvI7wOvbLRtEV7JbpZXkX9TJNL3ApioocLpZ5ruMhu0vP5brLntavoXUIJE9qamE P4U96MLaOkWdlFN4C3TG9Z7+AvXmX+EPRHnYUKTVRAL6Pf/5fijaxf97UAx9t6FjIOqBSw BqZfMFkFQXP3ZIyxGqJpebH4Vxi2eJs= Date: Wed, 12 Dec 2018 21:39:02 +0100 From: Borislav Petkov To: Maran Wilson Cc: x86@kernel.org, xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, pbonzini@redhat.com, jgross@suse.com, boris.ostrovsky@oracle.com, bp@suse.de, dave.hansen@linux.intel.com, davem@davemloft.net, gregkh@linuxfoundation.org, hpa@zytor.com, jpoimboe@redhat.com, kirill.shutemov@linux.intel.com, luto@kernel.org, mchehab@kernel.org, mingo@redhat.com, rdunlap@infradead.org, tglx@linutronix.de, thomas.lendacky@amd.com, hch@infradead.org, roger.pau@citrix.com, rkrcmar@redhat.com Subject: Re: [PATCH v9 0/7] KVM: x86: Allow Qemu/KVM to use PVH entry point Message-ID: <20181212203901.GI6653@zn.tnic> References: <1544468734-32763-1-git-send-email-maran.wilson@oracle.com> <20181211131825.GD27375@zn.tnic> <5fc083d4-1dbd-f2f9-3059-0e3e8dda9b25@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5fc083d4-1dbd-f2f9-3059-0e3e8dda9b25@oracle.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 11, 2018 at 11:29:21AM -0800, Maran Wilson wrote: > Is your question about what options you need to provide to Qemu? Or is your > question about the SW implementation choices? > > Assuming the former... Yeah, that's what I wanted to know. But looking at it, I'm booting bzImage here just as quickly and as flexible so I don't see the advantage of this new method for my use case here of booting kernels in qemu. But maybe there's a good use case where firmware is slow and one doesn't really wanna noodle through it or when one does start a gazillion VMs per second or whatever... Thx. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.