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authorJeremy Fitzhardinge <jeremy@goop.org>2008-07-10 16:24:08 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-16 11:07:44 +0200
commit62541c376668042e20122864a044360707b2fb82 (patch)
tree965d05ac3bed88bacd5d7869091d38e78130705f /include/asm-powerpc/pgalloc-64.h
parent6596f2422306a05be2170efc114da49f26a047dd (diff)
downloadblackbird-op-linux-62541c376668042e20122864a044360707b2fb82.tar.gz
blackbird-op-linux-62541c376668042e20122864a044360707b2fb82.zip
xen64: disable 32-bit syscall/sysenter if not supported.
Old versions of Xen (3.1 and before) don't support sysenter or syscall from 32-bit compat userspaces. If we can't set the appropriate syscall callback, then disable the corresponding feature bit, which will cause the vdso32 setup to fall back appropriately. Linux assumes that syscall is always available to 32-bit userspace, and installs it by default if sysenter isn't available. In that case, we just disable vdso altogether, forcing userspace libc to fall back to int $0x80. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-powerpc/pgalloc-64.h')
0 files changed, 0 insertions, 0 deletions
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