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[S390] cleanup lowcore access from program checks

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Read all required fields for program checks from the lowcore in the
first level interrupt handler in entry[64].S. If the context that
caused the fault was enabled for interrupts we can now re-enable the
irqs in entry[64].S.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2010-10-25 16:10:37 +02:00
committed by Martin Schwidefsky
parent 84afdcee62
commit 1e54622e04
6 changed files with 109 additions and 171 deletions
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2
arch/s390/kernel/entry.h
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@@ -5,7 +5,7 @@
#include <linux/signal.h>
#include <asm/ptrace.h>
typedef void pgm_check_handler_t(struct pt_regs *, long);
typedef void pgm_check_handler_t(struct pt_regs *, long, unsigned long);
extern pgm_check_handler_t *pgm_check_table[128];
pgm_check_handler_t do_protection_exception;
pgm_check_handler_t do_dat_exception;