tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
s390: switch to extable.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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arch/s390/include/asm/extable.h
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arch/s390/include/asm/extable.h
···
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#ifndef __S390_EXTABLE_H
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#define __S390_EXTABLE_H
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/*
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* The exception table consists of pairs of addresses: the first is the
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* address of an instruction that is allowed to fault, and the second is
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* the address at which the program should continue. No registers are
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* modified, so it is entirely up to the continuation code to figure out
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* what to do.
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*
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* All the routines below use bits of fixup code that are out of line
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* with the main instruction path. This means when everything is well,
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* we don't even have to jump over them. Further, they do not intrude
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* on our cache or tlb entries.
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*/
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struct exception_table_entry
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{
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int insn, fixup;
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};
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static inline unsigned long extable_fixup(const struct exception_table_entry *x)
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{
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return (unsigned long)&x->fixup + x->fixup;
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}
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#define ARCH_HAS_RELATIVE_EXTABLE
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#endif
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arch/s390/include/asm/uaccess.h
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arch/s390/include/asm/uaccess.h
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*/
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#include <asm/processor.h>
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#include <asm/ctl_reg.h>
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#include <asm/extable.h>
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/*
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})
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#define access_ok(type, addr, size) __access_ok(addr, size)
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/*
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* The exception table consists of pairs of addresses: the first is the
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* address of an instruction that is allowed to fault, and the second is
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* the address at which the program should continue. No registers are
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* modified, so it is entirely up to the continuation code to figure out
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* what to do.
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*
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* All the routines below use bits of fixup code that are out of line
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* with the main instruction path. This means when everything is well,
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* we don't even have to jump over them. Further, they do not intrude
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* on our cache or tlb entries.
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*/
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struct exception_table_entry
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{
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int insn, fixup;
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};
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static inline unsigned long extable_fixup(const struct exception_table_entry *x)
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{
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return (unsigned long)&x->fixup + x->fixup;
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}
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#define ARCH_HAS_RELATIVE_EXTABLE
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/**
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* __copy_from_user: - Copy a block of data from user space, with less checking.