From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:20306 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729164AbgAHQN1 (ORCPT ); Wed, 8 Jan 2020 11:13:27 -0500 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 008GD0jk011004 for ; Wed, 8 Jan 2020 11:13:26 -0500 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0a-001b2d01.pphosted.com with ESMTP id 2xdhch268u-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 08 Jan 2020 11:13:25 -0500 Received: from localhost by e06smtp05.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 8 Jan 2020 16:13:23 -0000 From: Claudio Imbrenda Subject: [kvm-unit-tests PATCH v5 3/4] s390x: lib: add SPX and STPX instruction wrapper Date: Wed, 8 Jan 2020 17:13:16 +0100 In-Reply-To: <20200108161317.268928-1-imbrenda@linux.ibm.com> References: <20200108161317.268928-1-imbrenda@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: <20200108161317.268928-4-imbrenda@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, thuth@redhat.com, david@redhat.com, borntraeger@de.ibm.com, frankja@linux.ibm.com Add a wrapper for the SET PREFIX and STORE PREFIX instructions, and use it instead of using inline assembly everywhere. Signed-off-by: Claudio Imbrenda --- lib/s390x/asm/arch_def.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/lib/s390x/asm/arch_def.h b/lib/s390x/asm/arch_def.h index 1a5e3c6..38c9dfa 100644 --- a/lib/s390x/asm/arch_def.h +++ b/lib/s390x/asm/arch_def.h @@ -284,4 +284,17 @@ static inline int servc(uint32_t command, unsigned long sccb) return cc; } +static inline void spx(uint32_t new_prefix) +{ + asm volatile("spx %0" : : "Q" (new_prefix) : "memory"); +} + +static inline uint32_t stpx(void) +{ + uint32_t prefix; + + asm volatile("stpx %0" : "=Q" (prefix)); + return prefix; +} + #endif -- 2.24.1