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| author |   James Hogan <james.hogan@imgtec.com> | 2015-08-05 16:41:39 +0100 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2015-12-22 11:58:43 +0100 |
| commit | d6a428fb583738ad685c91a684748cdee7b2a05f (patch) | |
| tree | a0c987da5c8d66400b4cb40628921a775bc99ae8 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | MIPS: uaccess: Take EVA into account in __copy_from_user() (diff) | |
| download | wireguard-linux-d6a428fb583738ad685c91a684748cdee7b2a05f.tar.xz wireguard-linux-d6a428fb583738ad685c91a684748cdee7b2a05f.zip | |
MIPS: uaccess: Take EVA into account in [__]clear_user
__clear_user() (and clear_user() which uses it), always access the user
mode address space, which results in EVA store instructions when EVA is
enabled even if the current user address limit is KERNEL_DS.
Fix this by adding a new symbol __bzero_kernel for the normal kernel
address space bzero in EVA mode, and call that from __clear_user() if
eva_kernel_access().
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10844/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions