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author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-03-18 10:58:09 +0100 |
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committer | Sami Tolvanen <samitolvanen@google.com> | 2016-09-29 10:52:56 -0700 |
commit | b4ad81e8d05dc75ee527c56f6936ebc7fa3f46a4 (patch) | |
tree | eb545d80ce48059f606e17e9dcc4447185d29860 /drivers/macintosh/macio_sysfs.c | |
parent | 3e64a8612dfa8738b95ad904a454b859ec9d9174 (diff) |
UPSTREAM: arm64/kernel: fix incorrect EL0 check in inv_entry macro
The implementation of macro inv_entry refers to its 'el' argument without
the required leading backslash, which results in an undefined symbol
'el' to be passed into the kernel_entry macro rather than the index of
the exception level as intended.
This undefined symbol strangely enough does not result in build failures,
although it is visible in vmlinux:
$ nm -n vmlinux |head
U el
0000000000000000 A _kernel_flags_le_hi32
0000000000000000 A _kernel_offset_le_hi32
0000000000000000 A _kernel_size_le_hi32
000000000000000a A _kernel_flags_le_lo32
.....
However, it does result in incorrect code being generated for invalid
exceptions taken from EL0, since the argument check in kernel_entry
assumes EL1 if its argument does not equal '0'.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Change-Id: I406c1207682a4dff3054a019c26fdf1310b08ed1
(cherry picked from commit b660950c60a7278f9d8deb7c32a162031207c758)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Diffstat (limited to 'drivers/macintosh/macio_sysfs.c')
0 files changed, 0 insertions, 0 deletions