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authorAl Viro <viro@zeniv.linux.org.uk>2012-12-14 13:49:35 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-19 18:07:40 -0500
commit9b064fc3f95a8e44e929fdf4d6037334ea03d15b (patch)
treedd1a2a6075667841f88b1ea8b62f4df2e18c3c68 /arch/x86/um
parentnew helper: restore_altstack() (diff)
downloadlinux-dev-9b064fc3f95a8e44e929fdf4d6037334ea03d15b.tar.xz
linux-dev-9b064fc3f95a8e44e929fdf4d6037334ea03d15b.zip
new helper: compat_user_stack_pointer()
Compat counterpart of current_user_stack_pointer(); for most of the biarch architectures those two are identical, but e.g. arm64 and arm use different registers for stack pointer... Note that amd64 variants of current_user_stack_pointer/compat_user_stack_pointer do *not* rely on pt_regs having been through FIXUP_TOP_OF_STACK. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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