linux/arch/parisc
John David Anglin 9e9d4b460f parisc: Avoid calling faulthandler_disabled() twice
In handle_interruption(), we call faulthandler_disabled() to check whether the
fault handler is not disabled. If the fault handler is disabled, we immediately
call do_page_fault(). It then calls faulthandler_disabled(). If disabled,
do_page_fault() attempts to fixup the exception by jumping to no_context:

no_context:

        if (!user_mode(regs) && fixup_exception(regs)) {
                return;
        }

        parisc_terminate("Bad Address (null pointer deref?)", regs, code, address);

Apart from the error messages, the two blocks of code perform the same
function.

We can avoid two calls to faulthandler_disabled() by a simple revision
to the code in handle_interruption().

Note: I didn't try to fix the formatting of this code block.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
2022-01-07 01:29:21 +01:00
..
boot parisc: decompressor: do not copy source files while building 2022-01-05 01:22:13 +01:00
configs parisc: Enable sata sil, audit and usb support on 64-bit defconfig 2021-11-30 21:49:32 +01:00
include parisc: Fix lpa and lpa_user defines 2022-01-07 01:29:20 +01:00
kernel parisc: Avoid calling faulthandler_disabled() twice 2022-01-07 01:29:21 +01:00
lib parisc: mark xchg functions notrace 2021-11-01 07:36:00 +01:00
math-emu parisc: math-emu: Fix fall-through warnings 2021-09-01 22:18:18 +02:00
mm parisc: Fix set_fixmap() on PA1.x CPUs 2021-11-01 12:00:22 +01:00
defpalo.conf
install.sh parisc: Fix "make install" on newer debian releases 2021-12-04 21:36:04 +01:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig parisc: remove ARCH_DEFCONFIG 2021-12-22 09:02:10 +01:00
Kconfig.debug tracing: Refactor TRACE_IRQFLAGS_SUPPORT in Kconfig 2021-08-16 11:37:21 -04:00
Makefile parisc: Fix KBUILD_IMAGE for self-extracting kernel 2021-11-30 21:49:32 +01:00
nm