linux-stable/arch/openrisc
Stafford Horne ccfede0a2c openrisc: Properly store r31 to pt_regs on unhandled exceptions
[ Upstream commit 812489ac4d ]

In commit 91993c8c2e ("openrisc: use shadow registers to save regs on
exception") the unhandled exception path was changed to do an early
store of r30 instead of r31.  The entry code was not updated and r31 is
not getting stored to pt_regs.

This patch updates the entry handler to store r31 instead of r30.  We
also remove some misleading commented out store r30 and r31
instructrions.

I noticed this while working on adding floating point exception
handling,  This issue probably would never impact anything since we kill
the process or Oops right away on unhandled exceptions.

Fixes: 91993c8c2e ("openrisc: use shadow registers to save regs on exception")
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-11 23:00:37 +09:00
..
boot openrisc/litex: Add ethernet device 2021-08-31 22:41:46 +09:00
configs openrisc/litex: Update defconfig 2021-08-31 22:41:46 +09:00
include openrisc: io: Define iounmap argument as volatile 2022-08-25 11:40:38 +02:00
kernel openrisc: Properly store r31 to pt_regs on unhandled exceptions 2023-05-11 23:00:37 +09:00
lib openrisc: rename or32 code & comments to or1k 2021-08-05 10:53:59 +09:00
mm openrisc: io: Define iounmap argument as volatile 2022-08-25 11:40:38 +02:00
Kbuild openrisc: add arch/openrisc/Kbuild 2021-01-18 20:53:14 +09:00
Kconfig Tracing updates for 5.15: 2021-09-05 11:50:41 -07:00
Kconfig.debug treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild 2021-05-26 23:10:37 +09:00