Paul Burton 4504c520ed MIPS: VDSO: Prevent use of smp_processor_id() ...

commit 351fdddd36 upstream.

VDSO code should not be using smp_processor_id(), since it is executed
in user mode.
Introduce a VDSO-specific path which will cause a compile-time
or link-time error (depending upon support for __compiletime_error) if
the VDSO ever incorrectly attempts to use smp_processor_id().

[Matt Redfearn <matt.redfearn@imgtec.com>: Move before change to
smp_processor_id in series]

Signed-off-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Matt Redfearn <matt.redfearn@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/17932/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2023-05-15 14:29:55 +09:00

..

asm

MIPS: VDSO: Prevent use of smp_processor_id()

2023-05-15 14:29:55 +09:00

uapi/asm

MIPS: Remove superfluous check for __linux__

2023-05-15 13:58:49 +09:00