From b5130dc2224d1881f24224c0590c6d97f2168d6a Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Tue, 2 Oct 2018 10:57:52 +0200 Subject: s390/sthyi: Fix machine name validity indication When running as a level 3 guest with no host provided sthyi support sclp_ocf_cpc_name_copy() will only return zeroes. Zeroes are not a valid group name, so let's not indicate that the group name field is valid. Also the group name is not dependent on stsi, let's not return based on stsi before setting it. Fixes: 95ca2cb57985 ("KVM: s390: Add sthyi emulation") Signed-off-by: Janosch Frank Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/sthyi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'arch/s390') diff --git a/arch/s390/kernel/sthyi.c b/arch/s390/kernel/sthyi.c index 0859cde36f75..888cc2f166db 100644 --- a/arch/s390/kernel/sthyi.c +++ b/arch/s390/kernel/sthyi.c @@ -183,17 +183,19 @@ static void fill_hdr(struct sthyi_sctns *sctns) static void fill_stsi_mac(struct sthyi_sctns *sctns, struct sysinfo_1_1_1 *sysinfo) { + sclp_ocf_cpc_name_copy(sctns->mac.infmname); + if (*(u64 *)sctns->mac.infmname != 0) + sctns->mac.infmval1 |= MAC_NAME_VLD; + if (stsi(sysinfo, 1, 1, 1)) return; - sclp_ocf_cpc_name_copy(sctns->mac.infmname); - memcpy(sctns->mac.infmtype, sysinfo->type, sizeof(sctns->mac.infmtype)); memcpy(sctns->mac.infmmanu, sysinfo->manufacturer, sizeof(sctns->mac.infmmanu)); memcpy(sctns->mac.infmpman, sysinfo->plant, sizeof(sctns->mac.infmpman)); memcpy(sctns->mac.infmseq, sysinfo->sequence, sizeof(sctns->mac.infmseq)); - sctns->mac.infmval1 |= MAC_ID_VLD | MAC_NAME_VLD; + sctns->mac.infmval1 |= MAC_ID_VLD; } static void fill_stsi_par(struct sthyi_sctns *sctns, -- cgit v1.2.3