Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754178Ab2HBHLQ (ORCPT ); Thu, 2 Aug 2012 03:11:16 -0400 Received: from e23smtp08.au.ibm.com ([202.81.31.141]:44463 "EHLO e23smtp08.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752936Ab2HBHLO (ORCPT ); Thu, 2 Aug 2012 03:11:14 -0400 Message-ID: <501A2775.90404@linux.vnet.ibm.com> Date: Thu, 02 Aug 2012 12:38:37 +0530 From: Raghavendra K T Organization: IBM User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120216 Thunderbird/10.0.1 MIME-Version: 1.0 To: Marcelo Tosatti , Alexander Graf CC: 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 Subject: Re: [PATCH] Documentation/kvm : Add documentation on Hypercalls References: <20120724085359.11344.91022.sendpatchset@codeblue.in.ibm.com> <20120801030736.GA31711@amt.cnet> <5019099D.9050608@linux.vnet.ibm.com> <20120801182554.GA9464@amt.cnet> In-Reply-To: <20120801182554.GA9464@amt.cnet> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit x-cbid: 12080207-5140-0000-0000-000001DA55ED Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1684 Lines: 39 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. -- 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/