From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:47288 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727108AbgD2Ofe (ORCPT ); Wed, 29 Apr 2020 10:35:34 -0400 From: Janosch Frank Subject: [PATCH v3 04/10] s390x: smp: Test local interrupts after cpu reset Date: Wed, 29 Apr 2020 10:35:12 -0400 Message-Id: <20200429143518.1360468-5-frankja@linux.ibm.com> In-Reply-To: <20200429143518.1360468-1-frankja@linux.ibm.com> References: <20200429143518.1360468-1-frankja@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-s390-owner@vger.kernel.org List-ID: To: kvm@vger.kernel.org Cc: thuth@redhat.com, linux-s390@vger.kernel.org, david@redhat.com, borntraeger@de.ibm.com, cohuck@redhat.com Local interrupts (external and emergency call) should be cleared after any cpu reset. Signed-off-by: Janosch Frank Reviewed-by: Cornelia Huck --- s390x/smp.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/s390x/smp.c b/s390x/smp.c index 4c50183..5e2e517 100644 --- a/s390x/smp.c +++ b/s390x/smp.c @@ -245,6 +245,19 @@ static void test_reset_initial(void) report_prefix_pop(); } +static void test_local_ints(void) +{ + unsigned long mask; + + /* Open masks for ecall and emcall */ + ctl_set_bit(0, 13); + ctl_set_bit(0, 14); + mask = extract_psw_mask(); + mask |= PSW_MASK_EXT; + load_psw_mask(mask); + set_flag(1); +} + static void test_reset(void) { struct psw psw; @@ -253,10 +266,18 @@ static void test_reset(void) psw.addr = (unsigned long)test_func; report_prefix_push("cpu reset"); + sigp(1, SIGP_EMERGENCY_SIGNAL, 0, NULL); + sigp(1, SIGP_EXTERNAL_CALL, 0, NULL); smp_cpu_start(1, psw); sigp_retry(1, SIGP_CPU_RESET, 0, NULL); report(smp_cpu_stopped(1), "cpu stopped"); + + set_flag(0); + psw.addr = (unsigned long)test_local_ints; + smp_cpu_start(1, psw); + wait_for_flag(); + report(true, "local interrupts cleared"); report_prefix_pop(); } -- 2.25.1