Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753439Ab2HBKMM (ORCPT ); Thu, 2 Aug 2012 06:12:12 -0400 Received: from cantor2.suse.de ([195.135.220.15]:54447 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752094Ab2HBKMJ convert rfc822-to-8bit (ORCPT ); Thu, 2 Aug 2012 06:12:09 -0400 References: <20120724085359.11344.91022.sendpatchset@codeblue.in.ibm.com> <20120801030736.GA31711@amt.cnet> <5019099D.9050608@linux.vnet.ibm.com> <20120801182554.GA9464@amt.cnet> <501A2775.90404@linux.vnet.ibm.com> In-Reply-To: <501A2775.90404@linux.vnet.ibm.com> Mime-Version: 1.0 (1.0) Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset=us-ascii Message-Id: <843859B1-67E7-46E3-9121-592F59450AA8@suse.de> Cc: Marcelo Tosatti , Rob Landley , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , Randy Dunlap , KVM , "H. Peter Anvin" , Gleb Natapov , Ingo Molnar , Avi Kivity , Jan Kiszka X-Mailer: iPhone Mail (9A406) From: Alexander Graf Subject: Re: [PATCH] Documentation/kvm : Add documentation on Hypercalls Date: Thu, 2 Aug 2012 12:13:00 +0200 To: Raghavendra K T Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1859 Lines: 46 On 02.08.2012, at 09:08, Raghavendra K T wrote: > On 08/01/2012 11:55 PM, Marcelo Tosatti wrote: >> On Wed, Aug 01, 2012 at 04:19:01PM +0530, Raghavendra K T wrote: >>> On 08/01/2012 08:37 AM, Marcelo Tosatti wrote: >>>> On Tue, Jul 24, 2012 at 02:23:59PM +0530, Raghavendra K T wrote: >>>>> From: Raghavendra K T >>>>> >>>>> Thanks Alex for KVM_HC_FEATURES inputs and Jan for VAPIC_POLL_IRQ, >>>>> and Peter (HPA) for suggesting hypercall ABI addition. >>>>> >>>>> Signed-off-by: Raghavendra K T >>>>> --- > [...] >>>>> + >>>>> + Up to four arguments may be passed in rbx, rcx, rdx, and rsi respectively. >>>>> + The hypercall number should be placed in rax and the return value will be >>>>> + placed in rax. No other registers will be clobbered unless explicitly stated >>>>> + by the particular hypercall. >>>> >>>> It depends on the hypercall. It happens that current hypercalls use >>>> the four registers, but its not an ABI (hyper-v hypercalls uses r8, for example). >>>> >>> >>> Okay, agree. I did not know about hyper-v. Above one is for X86 and >>> KVM (and not X86 / hyper-v). So I should remove ABI and probably say, >> >> Just say "Linux x86 Hypercall", yeah. >> > > Ok, Thanks Marcelo.will respin patches with the changes you suggested. > > Also I would like add Alex's description on ppc hypercalls > into Documentation/virtual/kvm/ppc-pv.txt with Alex from/sob or > suggested-by in a separate patch unless I see any objection to that. > Yeah, don't stall this on me :) Alex-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/