From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: [PATCH 4.4 58/60] s390/lib: use expoline for all bcr instructions
Date: Thu, 13 Sep 2018 15:31:05 +0200 [thread overview]
Message-ID: <20180913131748.256097969@linuxfoundation.org> (raw)
In-Reply-To: <20180913131745.261413581@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
commit 5eda25b10297684c1f46a14199ec00210f3c346e upstream.
The memove, memset, memcpy, __memset16, __memset32 and __memset64
function have an additional indirect return branch in form of a
"bzr" instruction. These need to use expolines as well.
Cc: <stable@vger.kernel.org> # v4.17+
Fixes: 97489e0663 ("s390/lib: use expoline for indirect branches")
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/lib/mem.S | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/arch/s390/lib/mem.S
+++ b/arch/s390/lib/mem.S
@@ -26,7 +26,7 @@
*/
ENTRY(memset)
ltgr %r4,%r4
- bzr %r14
+ jz .Lmemset_exit
ltgr %r3,%r3
jnz .Lmemset_fill
aghi %r4,-1
@@ -41,12 +41,13 @@ ENTRY(memset)
.Lmemset_clear_rest:
larl %r3,.Lmemset_xc
ex %r4,0(%r3)
+.Lmemset_exit:
BR_EX %r14
.Lmemset_fill:
stc %r3,0(%r2)
cghi %r4,1
lgr %r1,%r2
- ber %r14
+ je .Lmemset_fill_exit
aghi %r4,-2
srlg %r3,%r4,8
ltgr %r3,%r3
@@ -58,6 +59,7 @@ ENTRY(memset)
.Lmemset_fill_rest:
larl %r3,.Lmemset_mvc
ex %r4,0(%r3)
+.Lmemset_fill_exit:
BR_EX %r14
.Lmemset_xc:
xc 0(1,%r1),0(%r1)
@@ -71,7 +73,7 @@ ENTRY(memset)
*/
ENTRY(memcpy)
ltgr %r4,%r4
- bzr %r14
+ jz .Lmemcpy_exit
aghi %r4,-1
srlg %r5,%r4,8
ltgr %r5,%r5
@@ -80,6 +82,7 @@ ENTRY(memcpy)
.Lmemcpy_rest:
larl %r5,.Lmemcpy_mvc
ex %r4,0(%r5)
+.Lmemcpy_exit:
BR_EX %r14
.Lmemcpy_loop:
mvc 0(256,%r1),0(%r3)
next prev parent reply other threads:[~2018-09-13 13:34 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-13 13:30 [PATCH 4.4 00/60] 4.4.156-stable review Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 01/60] x86/speculation/l1tf: Fix up pte->pfn conversion for PAE Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 02/60] staging: android: ion: fix ION_IOC_{MAP,SHARE} use-after-free Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 03/60] net: bcmgenet: use MAC link status for fixed phy Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 04/60] qlge: Fix netdev features configuration Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 05/60] tcp: do not restart timewait timer on rst reception Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 06/60] vti6: remove !skb->ignore_df check from vti6_xmit() Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 07/60] cifs: check if SMB2 PDU size has been padded and suppress the warning Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 08/60] hfsplus: dont return 0 when fill_super() failed Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 09/60] hfs: prevent crash on exit from failed search Greg Kroah-Hartman
2018-09-13 13:30 ` Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 10/60] fork: dont copy inconsistent signal handler state to child Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 11/60] reiserfs: change j_timestamp type to time64_t Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 12/60] hfsplus: fix NULL dereference in hfsplus_lookup() Greg Kroah-Hartman
2018-09-13 13:30 ` Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 13/60] fat: validate ->i_start before using Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 14/60] scripts: modpost: check memory allocation results Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 15/60] mm/fadvise.c: fix signed overflow UBSAN complaint Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 16/60] fs/dcache.c: fix kmemcheck splat at take_dentry_name_snapshot() Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 17/60] ipvs: fix race between ip_vs_conn_new() and ip_vs_del_dest() Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 18/60] mfd: sm501: Set coherent_dma_mask when creating subdevices Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 19/60] platform/x86: asus-nb-wmi: Add keymap entry for lid flip action on UX360 Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 20/60] irqchip/bcm7038-l1: Hide cpu offline callback when building for !SMP Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 21/60] net/9p: fix error path of p9_virtio_probe Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 22/60] powerpc: Fix size calculation using resource_size() Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 23/60] s390/dasd: fix hanging offline processing due to canceled worker Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 24/60] scsi: aic94xx: fix an error code in aic94xx_init() Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 25/60] PCI: mvebu: Fix I/O space end address calculation Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 26/60] dm kcopyd: avoid softlockup in run_complete_job Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 27/60] staging: comedi: ni_mio_common: fix subdevice flags for PFI subdevice Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 28/60] selftests/powerpc: Kill child processes on SIGINT Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 29/60] smb3: fix reset of bytes read and written stats Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 30/60] SMB3: Number of requests sent should be displayed for SMB3 not just CIFS Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 31/60] powerpc/pseries: Avoid using the size greater than RTAS_ERROR_LOG_MAX Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 32/60] btrfs: replace: Reset on-disk dev stats value after replace Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 33/60] btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 34/60] btrfs: Dont remove block group that still has pinned down bytes Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 35/60] debugobjects: Make stack check warning more informative Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 36/60] x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 37/60] kbuild: make missing $DEPMOD a Warning instead of an Error Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 38/60] irda: Fix memory leak caused by repeated binds of irda socket Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 39/60] irda: Only insert new objects into the global database via setsockopt Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 40/60] Revert "ARM: imx_v6_v7_defconfig: Select ULPI support" Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 41/60] enic: do not call enic_change_mtu in enic_probe Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 42/60] Fixes: Commit cdbf92675fad ("mm: numa: avoid waiting on freed migrated pages") Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 43/60] genirq: Delay incrementing interrupt count if its disabled/pending Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 44/60] irqchip/gic-v3-its: Recompute the number of pages on page size change Greg Kroah-Hartman
2018-09-13 13:30 ` Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 45/60] irqchip/gicv3-its: Fix memory leak in its_free_tables() Greg Kroah-Hartman
2018-09-13 13:30 ` Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 46/60] irqchip/gicv3-its: Avoid cache flush beyond ITS_BASERn memory size Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 47/60] irqchip/gic-v3: Add missing barrier to 32bit version of gic_read_iar() Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 48/60] irqchip/gic: Make interrupt ID 1020 invalid Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 49/60] ovl: rename is_merge to is_lowest Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 50/60] ovl: override creds with the ones from the superblock mounter Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 51/60] ovl: proper cleanup of workdir Greg Kroah-Hartman
2018-09-13 13:30 ` [PATCH 4.4 52/60] sch_htb: fix crash on init failure Greg Kroah-Hartman
2018-09-13 13:31 ` [PATCH 4.4 53/60] sch_multiq: fix double free " Greg Kroah-Hartman
2018-09-13 13:31 ` [PATCH 4.4 54/60] sch_hhf: fix null pointer dereference " Greg Kroah-Hartman
2018-09-13 13:31 ` [PATCH 4.4 55/60] sch_netem: avoid null pointer deref " Greg Kroah-Hartman
2018-09-13 13:31 ` [PATCH 4.4 56/60] sch_tbf: fix two null pointer dereferences " Greg Kroah-Hartman
2018-09-13 13:31 ` [PATCH 4.4 57/60] mei: me: allow runtime pm for platform with D0i3 Greg Kroah-Hartman
2018-09-13 13:31 ` Greg Kroah-Hartman
2018-09-13 13:31 ` Greg Kroah-Hartman [this message]
2018-09-13 13:31 ` [PATCH 4.4 59/60] ASoC: wm8994: Fix missing break in switch Greg Kroah-Hartman
2018-09-13 13:31 ` [PATCH 4.4 60/60] btrfs: use correct compare function of dirty_metadata_bytes Greg Kroah-Hartman
2018-09-13 19:07 ` [PATCH 4.4 00/60] 4.4.156-stable review Nathan Chancellor
2018-09-14 12:49 ` Naresh Kamboju
2018-09-14 14:52 ` Guenter Roeck
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