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s390/pci: add missing EX_TABLE entries to __pcistg_mio_inuser()/__pcilg_mio_inuser()

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For some exception types the instruction address points behind the
instruction that caused the exception. Take that into account and add
the missing exception table entry.

Cc: <stable@vger.kernel.org>
Fixes: f058599e22 ("s390/pci: Fix s390_mmio_read/write with MIO")
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2022-10-18 13:48:34 +02:00 committed by Vasily Gorbik
parent a262d3ad6a
commit 6ec803025c
1 changed files with 4 additions and 4 deletions
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8
arch/s390/pci/pci_mmio.c
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@ -64,7 +64,7 @@ static inline int __pcistg_mio_inuser(
asm volatile (
" sacf 256\n"
"0: llgc %[tmp],0(%[src])\n"
" sllg %[val],%[val],8\n"
"4: sllg %[val],%[val],8\n"
" aghi %[src],1\n"
" ogr %[val],%[tmp]\n"
" brctg %[cnt],0b\n"
@ -72,7 +72,7 @@ static inline int __pcistg_mio_inuser(
"2: ipm %[cc]\n"
" srl %[cc],28\n"
"3: sacf 768\n"
EX_TABLE(0b, 3b) EX_TABLE(1b, 3b) EX_TABLE(2b, 3b)
EX_TABLE(0b, 3b) EX_TABLE(4b, 3b) EX_TABLE(1b, 3b) EX_TABLE(2b, 3b)
:
[src] "+a" (src), [cnt] "+d" (cnt),
[val] "+d" (val), [tmp] "=d" (tmp),
@ -215,10 +215,10 @@ static inline int __pcilg_mio_inuser(
"2: ahi %[shift],-8\n"
" srlg %[tmp],%[val],0(%[shift])\n"
"3: stc %[tmp],0(%[dst])\n"
" aghi %[dst],1\n"
"5: aghi %[dst],1\n"
" brctg %[cnt],2b\n"
"4: sacf 768\n"
EX_TABLE(0b, 4b) EX_TABLE(1b, 4b) EX_TABLE(3b, 4b)
EX_TABLE(0b, 4b) EX_TABLE(1b, 4b) EX_TABLE(3b, 4b) EX_TABLE(5b, 4b)
:
[ioaddr_len] "+&d" (ioaddr_len.pair),
[cc] "+d" (cc), [val] "=d" (val),