From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Steffen Maier <maier@linux.vnet.ibm.com>,
Michael Holzheu <holzheu@linux.vnet.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: [PATCH 4.4 19/49] Revert "s390/kdump: Clear subchannel ID to signal non-CCW/SCSI IPL"
Date: Sun, 14 Aug 2016 22:23:19 +0200 [thread overview]
Message-ID: <20160814202303.547775403@linuxfoundation.org> (raw)
In-Reply-To: <20160814202302.493206349@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
commit 5419447e2142d6ed68c9f5c1a28630b3a290a845 upstream.
This reverts commit 852ffd0f4e23248b47531058e531066a988434b5.
There are use cases where an intermediate boot kernel (1) uses kexec
to boot the final production kernel (2). For this scenario we should
provide the original boot information to the production kernel (2).
Therefore clearing the boot information during kexec() should not
be done.
Reported-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/kernel/ipl.c | 7 -------
1 file changed, 7 deletions(-)
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2070,13 +2070,6 @@ void s390_reset_system(void (*fn_pre)(vo
S390_lowcore.program_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
- /*
- * Clear subchannel ID and number to signal new kernel that no CCW or
- * SCSI IPL has been done (for kexec and kdump)
- */
- S390_lowcore.subchannel_id = 0;
- S390_lowcore.subchannel_nr = 0;
-
/* Store status at absolute zero */
store_status();
next prev parent reply other threads:[~2016-08-14 20:23 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20160814202407uscas1p163bf70e2ff3a45b1cb089c7603e89f4a@uscas1p1.samsung.com>
2016-08-14 20:23 ` [PATCH 4.4 00/49] 4.4.18-stable review Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 01/49] tcp: make challenge acks less predictable Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 02/49] tcp: enable per-socket rate limiting of all challenge acks Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 03/49] ipv4: reject RTNH_F_DEAD and RTNH_F_LINKDOWN from user space Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 04/49] bonding: set carrier off for devices created through netlink Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 05/49] net: bgmac: Fix infinite loop in bgmac_dma_tx_add() Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 06/49] net/irda: fix NULL pointer dereference on memory allocation failure Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 07/49] qed: Fix setting/clearing bit in completion bitmap Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 08/49] tcp: consider recv buf for the initial window scale Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 09/49] ipath: Restrict use of the write() interface Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 10/49] scsi: ignore errors from scsi_dh_add_device() Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 11/49] PNP: Add Haswell-ULT to Intel MCH size workaround Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 12/49] PNP: Add Broadwell " Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 13/49] HID: sony: do not bail out when the sixaxis refuses the output report Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 14/49] x86/mm/32: Enable full randomization on i386 and X86_32 Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 17/49] arm: oabi compat: add missing access checks Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 18/49] KEYS: 64-bit MIPS needs to use compat_sys_keyctl for 32-bit userspace Greg Kroah-Hartman
2016-08-14 20:23 ` Greg Kroah-Hartman [this message]
2016-08-14 20:23 ` [PATCH 4.4 20/49] apparmor: fix ref count leak when profile sha1 hash is read Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 21/49] random: strengthen input validation for RNDADDTOENTCNT Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 22/49] devpts: clean up interface to pty drivers Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 23/49] x86/mm/pat: Add support of non-default PAT MSR setting Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 24/49] x86/mm/pat: Add pat_disable() interface Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 25/49] x86/mm/pat: Replace cpu_has_pat with boot_cpu_has() Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 26/49] x86/mtrr: Fix Xorg crashes in Qemu sessions Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 27/49] x86/mtrr: Fix PAT init handling when MTRR is disabled Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 28/49] x86/xen, pat: Remove PAT table init code from Xen Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 29/49] x86/pat: Document the PAT initialization sequence Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 30/49] x86/mm/pat: Fix BUG_ON() in mmap_mem() on QEMU/i386 Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 31/49] drm/i915: Pretend cursor is always on for ILK-style WM calculations (v2) Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 32/49] mm: memcontrol: fix cgroup creation failure after many small jobs Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 33/49] mm: memcontrol: fix swap counter leak on swapout from offline cgroup Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 34/49] mm: memcontrol: fix memcg id ref counter on swap charge move Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 35/49] x86/syscalls/64: Add compat_sys_keyctl for 32-bit userspace Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 36/49] block: fix use-after-free in seq file Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 37/49] sysv, ipc: fix security-layer leaking Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 38/49] fuse: fsync() did not return IO errors Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 39/49] fuse: fuse_flush must check mapping->flags for errors Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 40/49] fuse: fix wrong assignment of ->flags in fuse_send_init() Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 41/49] fs/dcache.c: avoid soft-lockup in dput() Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 42/49] crypto: gcm - Filter out async ghash if necessary Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 43/49] crypto: scatterwalk - Fix test in scatterwalk_done Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 44/49] ext4: check for extents that wrap around Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 45/49] ext4: fix deadlock during page writeback Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 46/49] ext4: dont call ext4_should_journal_data() on the journal inode Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 47/49] ext4: validate s_reserved_gdt_blocks on mount Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 48/49] ext4: short-cut orphan cleanup on error Greg Kroah-Hartman
2016-08-14 20:23 ` [PATCH 4.4 49/49] ext4: fix reference counting bug on block allocation error Greg Kroah-Hartman
[not found] ` <57b11059.c4ebc20a.96bf2.6869@mx.google.com>
2016-08-15 7:56 ` [PATCH 4.4 00/49] 4.4.18-stable review Greg Kroah-Hartman
2016-08-15 13:05 ` Guenter Roeck
2016-08-16 4:02 ` Shuah Khan
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