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Fri, 31 Jul 2020 04:33:36 +0000 (GMT) Date: Fri, 31 Jul 2020 10:03:34 +0530 From: Bharata B Rao To: Ram Pai Subject: Re: [PATCH] KVM: PPC: Book3S HV: Define H_PAGE_IN_NONSHARED for H_SVM_PAGE_IN hcall Message-ID: <20200731043334.GB20199@in.ibm.com> References: <20200730232101.GB5882@oc0525413822.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200730232101.GB5882@oc0525413822.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-31_01:2020-07-30, 2020-07-31 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 priorityscore=1501 mlxlogscore=905 mlxscore=0 adultscore=0 bulkscore=0 suspectscore=1 impostorscore=0 phishscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007310031 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: bharata@linux.ibm.com Cc: ldufour@linux.ibm.com, linux-doc@vger.kernel.org, corbet@lwn.net, kvm-ppc@vger.kernel.org, Julia Lawall , sathnaga@linux.vnet.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, david@gibson.dropbear.id.au Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Thu, Jul 30, 2020 at 04:21:01PM -0700, Ram Pai wrote: > H_SVM_PAGE_IN hcall takes a flag parameter. This parameter specifies the > way in which a page will be treated. H_PAGE_IN_NONSHARED indicates > that the page will be shared with the Secure VM, and H_PAGE_IN_SHARED > indicates that the page will not be shared but its contents will > be copied. Looks like you got the definitions of shared and non-shared interchanged. > > However H_PAGE_IN_NONSHARED is not defined in the header file, though > it is defined and documented in the API captured in > Documentation/powerpc/ultravisor.rst > > Define H_PAGE_IN_NONSHARED in the header file. What is the use of defining this? Is this used directly in any place? Or, are youp planning to introduce such a usage? Regards, Bharata.