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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-08-19 13:02:28 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-08-25 18:14:43 +0300 |
| commit | 3fba7e23f754a9a6e639b640fa2a393712ffe1b8 (patch) | |
| tree | c9a472b59b67700bdde134a4dc707ae607837faa /arch/arm/lib/clear_user.S | |
| parent | 08446b129bbde34665c423d882f857a45b8c3aed (diff) | |
| download | linux-3fba7e23f754a9a6e639b640fa2a393712ffe1b8.tar.xz | |
ARM: uaccess: provide uaccess_save_and_enable() and uaccess_restore()
Provide uaccess_save_and_enable() and uaccess_restore() to permit
control of userspace visibility to the kernel, and hook these into
the appropriate places in the kernel where we need to access
userspace.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/lib/clear_user.S')
| -rw-r--r-- | arch/arm/lib/clear_user.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/lib/clear_user.S b/arch/arm/lib/clear_user.S index 1710fd7db2d5..970d6c043774 100644 --- a/arch/arm/lib/clear_user.S +++ b/arch/arm/lib/clear_user.S @@ -12,14 +12,14 @@ .text -/* Prototype: int __clear_user(void *addr, size_t sz) +/* Prototype: unsigned long arm_clear_user(void *addr, size_t sz) * Purpose : clear some user memory * Params : addr - user memory address to clear * : sz - number of bytes to clear * Returns : number of bytes NOT cleared */ ENTRY(__clear_user_std) -WEAK(__clear_user) +WEAK(arm_clear_user) stmfd sp!, {r1, lr} mov r2, #0 cmp r1, #4 @@ -44,7 +44,7 @@ WEAK(__clear_user) USER( strnebt r2, [r0]) mov r0, #0 ldmfd sp!, {r1, pc} -ENDPROC(__clear_user) +ENDPROC(arm_clear_user) ENDPROC(__clear_user_std) .pushsection .text.fixup,"ax" |