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 25/32] s390/pci: Convert inline assembly to EX_TABLE_INSN
Date: Thu, 1 Oct 2026 12:32:40 +0200 [thread overview]
Message-ID: <20261001103247.1989111-26-hca@linux.ibm.com> (raw)
In-Reply-To: <20261001103247.1989111-1-hca@linux.ibm.com>
Convert all pci exception table entries to use EX_TABLE_INSN.
With EX_TABLE_INSN entries always point to the faulting instruction,
so duplicate entries are removed.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
arch/s390/pci/pci_clp.c | 12 ++++++------
arch/s390/pci/pci_insn.c | 36 ++++++++++++++++++------------------
arch/s390/pci/pci_mmio.c | 28 +++++++++++++++-------------
3 files changed, 39 insertions(+), 37 deletions(-)
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 177aa0214547..2d7eaf4d9d59 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -55,11 +55,11 @@ static inline int clp_get_ilp(unsigned long *ilp)
exception = 1;
asm_inline volatile (
- " .insn rrf,0xb9a00000,%[mask],%[cmd],8,0\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rrf,0xb9a00000,%[mask],%[cmd],8,0\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [mask] "=d" (mask), [exc] "+d" (exception)
: [cmd] "a" (1)
: CC_CLOBBER);
@@ -78,11 +78,11 @@ static __always_inline int clp_req(void *data, unsigned int lps)
exception = 1;
asm_inline volatile (
- " .insn rrf,0xb9a00000,%[ign],%[req],0,%[lps]\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rrf,0xb9a00000,%[ign],%[req],0,%[lps]\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [ign] "=d" (ignored), "+m" (*req), [exc] "+d" (exception)
: [req] "a" (req), [lps] "i" (lps)
: CC_CLOBBER);
diff --git a/arch/s390/pci/pci_insn.c b/arch/s390/pci/pci_insn.c
index 35ceb1bea1c6..ed0def408f18 100644
--- a/arch/s390/pci/pci_insn.c
+++ b/arch/s390/pci/pci_insn.c
@@ -161,11 +161,11 @@ static inline int ____pcilg(u64 *data, u64 req, u64 offset, u8 *status)
exception = 1;
asm_inline volatile (
- " .insn rre,0xb9d20000,%[data],%[req_off]\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rre,0xb9d20000,%[data],%[req_off]\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [data] "=d" (__data),
[req_off] "+d" (req_off.pair), [exc] "+d" (exception)
:
@@ -230,11 +230,11 @@ static inline int __pcilg_mio(u64 *data, u64 ioaddr, u64 len, u8 *status)
exception = 1;
asm_inline volatile (
- " .insn rre,0xb9d60000,%[data],%[ioaddr_len]\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rre,0xb9d60000,%[data],%[ioaddr_len]\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [data] "=d" (__data),
[ioaddr_len] "+d" (ioaddr_len.pair), [exc] "+d" (exception)
:
@@ -268,11 +268,11 @@ static inline int __pcistg(u64 data, u64 req, u64 offset, u8 *status)
exception = 1;
asm_inline volatile (
- " .insn rre,0xb9d00000,%[data],%[req_off]\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rre,0xb9d00000,%[data],%[req_off]\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [req_off] "+d" (req_off.pair), [exc] "+d" (exception)
: [data] "d" (data)
: CC_CLOBBER);
@@ -322,11 +322,11 @@ static inline int __pcistg_mio(u64 data, u64 ioaddr, u64 len, u8 *status)
exception = 1;
asm_inline volatile (
- " .insn rre,0xb9d40000,%[data],%[ioaddr_len]\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rre,0xb9d40000,%[data],%[ioaddr_len]\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [ioaddr_len] "+d" (ioaddr_len.pair), [exc] "+d" (exception)
: [data] "d" (data)
: CC_CLOBBER_LIST("memory"));
@@ -357,11 +357,11 @@ static inline int __pcistb(const u64 *data, u64 req, u64 offset, u8 *status)
exception = 1;
asm_inline volatile (
- " .insn rsy,0xeb00000000d0,%[req],%[offset],%[data]\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rsy,0xeb00000000d0,%[req],%[offset],%[data]\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [req] "+d" (req), [exc] "+d" (exception)
: [offset] "d" (offset), [data] "Q" (*data)
: CC_CLOBBER);
@@ -411,11 +411,11 @@ static inline int __pcistb_mio(const u64 *data, u64 ioaddr, u64 len, u8 *status)
exception = 1;
asm_inline volatile (
- " .insn rsy,0xeb00000000d4,%[len],%[ioaddr],%[data]\n"
- "0: lhi %[exc],0\n"
+ "0: .insn rsy,0xeb00000000d4,%[len],%[ioaddr],%[data]\n"
+ " lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
- EX_TABLE(0b, 1b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [len] "+d" (len), [exc] "+d" (exception)
: [ioaddr] "d" (ioaddr), [data] "Q" (*data)
: CC_CLOBBER);
diff --git a/arch/s390/pci/pci_mmio.c b/arch/s390/pci/pci_mmio.c
index f3f79ba78410..8b49175b0031 100644
--- a/arch/s390/pci/pci_mmio.c
+++ b/arch/s390/pci/pci_mmio.c
@@ -39,10 +39,10 @@ static inline int __pcistb_mio_inuser(
asm_inline volatile (
" sacf 256\n"
"0: .insn rsy,0xeb00000000d4,%[len],%[ioaddr],%[src]\n"
- "1: lhi %[exc],0\n"
- "2: sacf 768\n"
+ " lhi %[exc],0\n"
+ "1: sacf 768\n"
CC_IPM(cc)
- EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
+ EX_TABLE_INSN(0b, 1b)
: CC_OUT(cc, cc), [len] "+d" (len), [exc] "+d" (exception)
: [ioaddr] "a" (ioaddr), [src] "Q" (*((u8 __force *)src))
: CC_CLOBBER_LIST("memory"));
@@ -72,15 +72,16 @@ static inline int __pcistg_mio_inuser(
asm_inline volatile (
" sacf 256\n"
"0: llgc %[tmp],0(%[src])\n"
- "4: sllg %[val],%[val],8\n"
+ " sllg %[val],%[val],8\n"
" aghi %[src],1\n"
" ogr %[val],%[tmp]\n"
" brctg %[cnt],0b\n"
"1: .insn rre,0xb9d40000,%[val],%[ioaddr_len]\n"
- "2: lhi %[exc],0\n"
- "3: sacf 768\n"
+ " lhi %[exc],0\n"
+ "2: sacf 768\n"
CC_IPM(cc)
- EX_TABLE(0b, 3b) EX_TABLE(4b, 3b) EX_TABLE(1b, 3b) EX_TABLE(2b, 3b)
+ EX_TABLE_INSN(0b, 2b)
+ EX_TABLE_INSN(1b, 2b)
: [src] "+a" (src), [cnt] "+d" (cnt),
[val] "+d" (val), [tmp] "=d" (tmp), [exc] "+d" (exception),
CC_OUT(cc, cc), [ioaddr_len] "+&d" (ioaddr_len.pair)
@@ -227,13 +228,13 @@ static inline int __pcilg_mio_inuser(
asm_inline volatile (
" sacf 256\n"
"0: .insn rre,0xb9d60000,%[val],%[ioaddr_len]\n"
- "1: lhi %[exc],0\n"
+ " lhi %[exc],0\n"
" jne 4f\n"
- "2: ahi %[shift],-8\n"
+ "1: ahi %[shift],-8\n"
" srlg %[tmp],%[val],0(%[shift])\n"
- "3: stc %[tmp],0(%[dst])\n"
- "5: aghi %[dst],1\n"
- " brctg %[cnt],2b\n"
+ "2: stc %[tmp],0(%[dst])\n"
+ " aghi %[dst],1\n"
+ " brctg %[cnt],1b\n"
/*
* Use xr to clear exc and set condition code to zero
* to ensure flag output is correct for this branch.
@@ -241,7 +242,8 @@ static inline int __pcilg_mio_inuser(
" xr %[exc],%[exc]\n"
"4: sacf 768\n"
CC_IPM(cc)
- EX_TABLE(0b, 4b) EX_TABLE(1b, 4b) EX_TABLE(3b, 4b) EX_TABLE(5b, 4b)
+ EX_TABLE_INSN(0b, 4b)
+ EX_TABLE_INSN(2b, 4b)
: [ioaddr_len] "+&d" (ioaddr_len.pair), [exc] "+d" (exception),
CC_OUT(cc, cc), [val] "=d" (val),
[dst] "+a" (dst), [cnt] "+d" (cnt), [tmp] "=d" (tmp),
--
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 ` [PATCH 10/32] s390/diag: Convert amode31 exception tables to EX_TABLE_INSN Heiko Carstens
2026-10-01 10:32 ` [PATCH 11/32] s390/uaccess: Convert inline assembly " 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 ` Heiko Carstens [this message]
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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