compat: add a compat_need_64bit_alignment_fixup() helper

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Add a helper to check if the calling syscall needs a fixup for
non-natural 64-bit type alignment in the compat ABI.  This will only
return true for i386 syscalls on x86_64.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Christoph Hellwig 2020-09-17 09:41:58 +02:00 • committed by Al Viro

parent cc7886d25b

commit 527c412519

2 changed files with 10 additions and 0 deletions

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arch/x86/include/asm/compat.h

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9

include/linux/compat.h

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