From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43C07C433E5 for ; Thu, 23 Jul 2020 12:01:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2399E20768 for ; Thu, 23 Jul 2020 12:01:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="KvcKO0ft" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727869AbgGWMBY (ORCPT ); Thu, 23 Jul 2020 08:01:24 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:53075 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726558AbgGWMBY (ORCPT ); Thu, 23 Jul 2020 08:01:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1595505682; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=cPGyi1XLifSOA1yXGeuHZfsgFwwkLUi8q0Ep7G+DUCY=; b=KvcKO0ft8j8SueUe1VJWcseIgLafzS1iP1cA8SlBdAKs4+T0BSywUSwK6u3w8zhe22n/7K /ZxonMEQLs8qpsmRcC3Dh375UaUxQ/OOZr288F3sUxrHDp/Uo2NVSgmPP8fPekWElFHxje k1G6Mdg49QwEMsNwA6GXhEkgkk/N7i4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-31-F-ByViL0PHWhKmEDT2pKwQ-1; Thu, 23 Jul 2020 08:01:20 -0400 X-MC-Unique: F-ByViL0PHWhKmEDT2pKwQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1EE638064DE; Thu, 23 Jul 2020 12:01:19 +0000 (UTC) Received: from gondolin (ovpn-112-228.ams2.redhat.com [10.36.112.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id CF78219C4F; Thu, 23 Jul 2020 12:01:14 +0000 (UTC) Date: Thu, 23 Jul 2020 14:01:12 +0200 From: Cornelia Huck To: Janosch Frank Cc: kvm@vger.kernel.org, thuth@redhat.com, linux-s390@vger.kernel.org, david@redhat.com, borntraeger@de.ibm.com, imbrenda@linux.ibm.com Subject: Re: [kvm-unit-tests PATCH 1/3] s390x: Add custom pgm cleanup function Message-ID: <20200723140112.6525ddba.cohuck@redhat.com> In-Reply-To: <20200717145813.62573-2-frankja@linux.ibm.com> References: <20200717145813.62573-1-frankja@linux.ibm.com> <20200717145813.62573-2-frankja@linux.ibm.com> Organization: Red Hat GmbH MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Fri, 17 Jul 2020 10:58:11 -0400 Janosch Frank wrote: > Sometimes we need to do cleanup which we don't necessarily want to add > to interrupt.c, so lets add a way to register a cleanup function. s/lets/let's/ :) > > Signed-off-by: Janosch Frank > --- > lib/s390x/asm/interrupt.h | 1 + > lib/s390x/interrupt.c | 9 +++++++++ > 2 files changed, 10 insertions(+) > > diff --git a/lib/s390x/asm/interrupt.h b/lib/s390x/asm/interrupt.h > index 4cfade9..b2a7c83 100644 > --- a/lib/s390x/asm/interrupt.h > +++ b/lib/s390x/asm/interrupt.h > @@ -15,6 +15,7 @@ > #define EXT_IRQ_EXTERNAL_CALL 0x1202 > #define EXT_IRQ_SERVICE_SIG 0x2401 > > +void register_pgm_int_func(void (*f)(void)); > void handle_pgm_int(void); > void handle_ext_int(void); > void handle_mcck_int(void); > diff --git a/lib/s390x/interrupt.c b/lib/s390x/interrupt.c > index 243b9c2..36ba720 100644 > --- a/lib/s390x/interrupt.c > +++ b/lib/s390x/interrupt.c > @@ -16,6 +16,7 @@ > > static bool pgm_int_expected; > static bool ext_int_expected; > +static void (*pgm_int_func)(void); > static struct lowcore *lc; > > void expect_pgm_int(void) > @@ -51,8 +52,16 @@ void check_pgm_int_code(uint16_t code) > lc->pgm_int_code); > } > > +void register_pgm_int_func(void (*f)(void)) > +{ > + pgm_int_func = f; > +} > + > static void fixup_pgm_int(void) > { > + if (pgm_int_func) > + return (*pgm_int_func)(); > + Maybe rather call this function, if set, instead of fixup_pgm_int() in handle_pgm_int()? Feels a bit cleaner to me. > switch (lc->pgm_int_code) { > case PGM_INT_CODE_PRIVILEGED_OPERATION: > /* Normal operation is in supervisor state, so this exception