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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-10-25 16:10:38 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-10-25 16:10:19 +0200 |
| commit | f6649a7e5a9ee99e9623878f4a5579cc2f6cdd51 (patch) | |
| tree | 183438313c7593565980a1445f208e0ba30162cd /arch/s390/mm/fault.c | |
| parent | 1e54622e0403891b10f2105663e0f9dd595a1f17 (diff) | |
| download | linux-f6649a7e5a9ee99e9623878f4a5579cc2f6cdd51.tar.gz | |
[S390] cleanup lowcore access from external interrupts
Read external interrupts parameters from the lowcore in the first level interrupt handler in entry[64].S. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/fault.c')
| -rw-r--r-- | arch/s390/mm/fault.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index b6570069b127..b4aad0c1f562 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -542,7 +542,8 @@ void pfault_fini(void) : : "a" (&refbk), "m" (refbk) : "cc"); } -static void pfault_interrupt(__u16 int_code) +static void pfault_interrupt(unsigned int ext_int_code, + unsigned int param32, unsigned long param64) { struct task_struct *tsk; __u16 subcode; @@ -553,14 +554,18 @@ static void pfault_interrupt(__u16 int_code) * in the 'cpu address' field associated with the * external interrupt. */ - subcode = S390_lowcore.cpu_addr; + subcode = ext_int_code >> 16; if ((subcode & 0xff00) != __SUBCODE_MASK) return; /* * Get the token (= address of the task structure of the affected task). */ - tsk = *(struct task_struct **) __LC_PFAULT_INTPARM; +#ifdef CONFIG_64BIT + tsk = *(struct task_struct **) param64; +#else + tsk = *(struct task_struct **) param32; +#endif if (subcode & 0x0080) { /* signal bit is set -> a page has been swapped in by VM */ |