From: Heiko Carstens <hca@linux.ibm.com>
To: Alexander Gordeev <agordeev@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Niklas Schnelle <schnelle@linux.ibm.com>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Vineeth Vijayan <vneethv@linux.ibm.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Harald Freudenberger <freude@linux.ibm.com>,
Holger Dengler <dengler@linux.ibm.com>,
Stefan Haberland <sth@linux.ibm.com>,
Jan Hoeppner <hoeppner@linux.ibm.com>,
Ilya Leoshkevich <iii@linux.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Subject: [PATCH 10/32] s390/diag: Convert amode31 exception tables to EX_TABLE_INSN
Date: Thu, 1 Oct 2026 12:32:25 +0200 [thread overview]
Message-ID: <20261001103247.1989111-11-hca@linux.ibm.com> (raw)
In-Reply-To: <20261001103247.1989111-1-hca@linux.ibm.com>
Convert all amode31 exception table entries to use EX_TABLE_INSN.
With EX_TABLE_INSN entries always point to the faulting instruction,
so named labels are replaced with numeric labels.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
arch/s390/kernel/text_amode31.S | 34 ++++++++++++++-------------------
1 file changed, 14 insertions(+), 20 deletions(-)
diff --git a/arch/s390/kernel/text_amode31.S b/arch/s390/kernel/text_amode31.S
index f007d892d0c5..7761de491443 100644
--- a/arch/s390/kernel/text_amode31.S
+++ b/arch/s390/kernel/text_amode31.S
@@ -19,9 +19,9 @@
* affects a few functions that are not performance-relevant.
*/
.macro BR_EX_AMODE31_r14
- exrl 0,0f
+ exrl 0,555f
j .
-0: br %r14
+555: br %r14
.endm
/*
@@ -33,15 +33,13 @@ SYM_TYPED_FUNC_START(_diag14_amode31)
lgr %r3,%r4
lhi %r5,-EIO
sam31
- diag %r1,%r2,0x14
-.Ldiag14_ex:
+0: diag %r1,%r2,0x14
ipm %r5
srl %r5,28
-.Ldiag14_fault:
- sam64
+1: sam64
lgfr %r2,%r5
BR_EX_AMODE31_r14
- EX_TABLE_AMODE31(.Ldiag14_ex, .Ldiag14_fault)
+ EX_TABLE_INSN_AMODE31(0b, 1b)
SYM_FUNC_END(_diag14_amode31)
/*
@@ -51,15 +49,13 @@ SYM_TYPED_FUNC_START(_diag210_amode31)
lgr %r1,%r2
lhi %r2,-1
sam31
- diag %r1,%r0,0x210
-.Ldiag210_ex:
+0: diag %r1,%r0,0x210
ipm %r2
srl %r2,28
-.Ldiag210_fault:
- sam64
+1: sam64
lgfr %r2,%r2
BR_EX_AMODE31_r14
- EX_TABLE_AMODE31(.Ldiag210_ex, .Ldiag210_fault)
+ EX_TABLE_INSN_AMODE31(0b, 1b)
SYM_FUNC_END(_diag210_amode31)
/*
@@ -68,12 +64,11 @@ SYM_FUNC_END(_diag210_amode31)
SYM_TYPED_FUNC_START(_diag8c_amode31)
llgf %r3,0(%r3)
sam31
- diag %r2,%r4,0x8c
-.Ldiag8c_ex:
- sam64
+0: diag %r2,%r4,0x8c
+1: sam64
lgfr %r2,%r3
BR_EX_AMODE31_r14
- EX_TABLE_AMODE31(.Ldiag8c_ex, .Ldiag8c_ex)
+ EX_TABLE_INSN_AMODE31(0b, 1b)
SYM_FUNC_END(_diag8c_amode31)
/*
* int _diag26c_amode31(void *req, void *resp, enum diag26c_sc subcode)
@@ -81,12 +76,11 @@ SYM_FUNC_END(_diag8c_amode31)
SYM_TYPED_FUNC_START(_diag26c_amode31)
lghi %r5,-EOPNOTSUPP
sam31
- diag %r2,%r4,0x26c
-.Ldiag26c_ex:
- sam64
+0: diag %r2,%r4,0x26c
+1: sam64
lgfr %r2,%r5
BR_EX_AMODE31_r14
- EX_TABLE_AMODE31(.Ldiag26c_ex, .Ldiag26c_ex)
+ EX_TABLE_INSN_AMODE31(0b, 1b)
SYM_FUNC_END(_diag26c_amode31)
/*
--
2.53.0
next prev parent reply other threads:[~2026-10-01 10:33 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 10:32 [PATCH 00/32] s390: Improve exception table handling and disassembler Heiko Carstens
2026-10-01 10:32 ` [PATCH 01/32] s390/kprobes: Prevent kprobes on instructions with exception table entry Heiko Carstens
2026-10-01 10:32 ` [PATCH 02/32] s390/early: Fix early warning handling Heiko Carstens
2026-10-01 10:32 ` [PATCH 03/32] s390: Clear pt_regs flags field Heiko Carstens
2026-10-01 10:32 ` [PATCH 04/32] s390/bug: Indicate modified PSW in disassembly Heiko Carstens
2026-10-01 10:32 ` [PATCH 05/32] s390/tools: Rename gen_facilities to gen_bitmaps Heiko Carstens
2026-10-01 10:32 ` [PATCH 06/32] s390/tools: Generate bitmap of nullified program checks Heiko Carstens
2026-10-01 10:32 ` [PATCH 07/32] s390/traps: Handle nullifying program checks in get_trap_ip() Heiko Carstens
2026-10-01 10:32 ` [PATCH 08/32] s390/dis: Improve show_code() output Heiko Carstens
2026-10-01 10:32 ` [PATCH 09/32] s390/extable: Rework exception handling logic Heiko Carstens
2026-10-01 10:32 ` Heiko Carstens [this message]
2026-10-01 10:32 ` [PATCH 11/32] s390/uaccess: Convert inline assembly to EX_TABLE_INSN Heiko Carstens
2026-10-01 10:32 ` [PATCH 12/32] s390/lib/uaccess: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 13/32] s390/futex: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 14/32] s390/diag: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 15/32] s390/mm/pfault: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 16/32] s390/cpu_mf: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 17/32] s390/cert_store: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 18/32] s390/ipl: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 19/32] s390/hypfs: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 20/32] s390/ap: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 21/32] s390/fpu: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 22/32] s390/traps: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 23/32] s390/word-at-a-time: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 24/32] s390/kvm: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 25/32] s390/pci: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 26/32] s390/boot: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 27/32] s390/cio: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 28/32] s390/dasd: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 29/32] s390/diag_ftp: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 30/32] s390/sclp: " Heiko Carstens
2026-10-01 10:32 ` [PATCH 31/32] s390/bpf: Simplify exception table entry handling Heiko Carstens
2026-10-01 10:32 ` [PATCH 32/32] s390/extable: Remove EX_TABLE macros and fallback extable search Heiko Carstens
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