From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-sn1nam01on0103.outbound.protection.outlook.com ([104.47.32.103]:45281 "EHLO NAM01-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756356AbeDIAcG (ORCPT ); Sun, 8 Apr 2018 20:32:06 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Thiago Jung Bauermann , Michael Ellerman , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 194/293] powerpc/perf/hv-24x7: Fix passing of catalog version number Date: Mon, 9 Apr 2018 00:25:25 +0000 Message-ID: <20180409002239.163177-194-alexander.levin@microsoft.com> References: <20180409002239.163177-1-alexander.levin@microsoft.com> In-Reply-To: <20180409002239.163177-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org List-ID: From: Thiago Jung Bauermann [ Upstream commit 12bf85a71000af7419b19b5e90910919f36f336c ] H_GET_24X7_CATALOG_PAGE needs to be passed the version number obtained from the first catalog page obtained previously. This is a 64 bit number, but create_events_from_catalog truncates it to 32-bit. This worked on POWER8, but POWER9 actually uses the upper bits so the call fails with H_P3 because the hypervisor doesn't recognize the version. This patch also adds the hcall return code to the error message, which is helpful when debugging the problem. Fixes: 5c5cd7b50259 ("powerpc/perf/hv-24x7: parse catalog and populate sysf= s with events") Reviewed-by: Sukadev Bhattiprolu Signed-off-by: Thiago Jung Bauermann Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/perf/hv-24x7.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 991c6a517ddc..13cea4e8c56d 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -670,7 +670,7 @@ static int create_events_from_catalog(struct attribute = ***events_, event_data_bytes, junk_events, event_idx, event_attr_ct, i, attr_max, event_idx_last, desc_ct, long_desc_ct; ssize_t ct, ev_len; - uint32_t catalog_version_num; + uint64_t catalog_version_num; struct attribute **events, **event_descs, **event_long_descs; struct hv_24x7_catalog_page_0 *page_0 =3D kmem_cache_alloc(hv_page_cache, GFP_KERNEL); @@ -706,8 +706,8 @@ static int create_events_from_catalog(struct attribute = ***events_, event_data_offs =3D be16_to_cpu(page_0->event_data_offs); event_data_len =3D be16_to_cpu(page_0->event_data_len); =20 - pr_devel("cv %zu cl %zu eec %zu edo %zu edl %zu\n", - (size_t)catalog_version_num, catalog_len, + pr_devel("cv %llu cl %zu eec %zu edo %zu edl %zu\n", + catalog_version_num, catalog_len, event_entry_count, event_data_offs, event_data_len); =20 if ((MAX_4K < event_data_len) @@ -761,8 +761,8 @@ static int create_events_from_catalog(struct attribute = ***events_, catalog_version_num, i + event_data_offs); if (hret) { - pr_err("failed to get event data in page %zu\n", - i + event_data_offs); + pr_err("Failed to get event data in page %zu: rc=3D%ld\n", + i + event_data_offs, hret); ret =3D -EIO; goto e_event_data; } --=20 2.15.1