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| author | Keir Fraser <keir.fraser@citrix.com> | 2008-06-13 13:48:13 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-06-13 13:48:13 +0100 |
| commit | a01be666f18b2b2c0f423199db8afc503d52ab78 (patch) | |
| tree | 0a8a03689540376afd0dae515de0a9cb50b7ec1a /xen/include/asm-x86/x86_64 | |
| parent | 6c6d249dd5cbaecc415c2c9e2831201c4793ecc2 (diff) | |
| download | xen-a01be666f18b2b2c0f423199db8afc503d52ab78.tar.gz xen-a01be666f18b2b2c0f423199db8afc503d52ab78.tar.bz2 xen-a01be666f18b2b2c0f423199db8afc503d52ab78.zip | |
32-on-64: Fix is_compat_arg_xlat_range().
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Diffstat (limited to 'xen/include/asm-x86/x86_64')
| -rw-r--r-- | xen/include/asm-x86/x86_64/uaccess.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/xen/include/asm-x86/x86_64/uaccess.h b/xen/include/asm-x86/x86_64/uaccess.h index 2450af21e3..2080be86b1 100644 --- a/xen/include/asm-x86/x86_64/uaccess.h +++ b/xen/include/asm-x86/x86_64/uaccess.h @@ -7,7 +7,8 @@ DECLARE_PER_CPU(char, compat_arg_xlat[COMPAT_ARG_XLAT_SIZE]); #define is_compat_arg_xlat_range(addr, size) ({ \ unsigned long __off; \ __off = (unsigned long)(addr) - (unsigned long)COMPAT_ARG_XLAT_VIRT_BASE; \ - (__off | (__off + (unsigned long)(size))) <= PAGE_SIZE; \ + (__off <= COMPAT_ARG_XLAT_SIZE) && \ + ((__off + (unsigned long)(size)) <= COMPAT_ARG_XLAT_SIZE); \ }) /* |