Merge tag 'v6.6.33' into dev-6.6

This is the 6.6.33 stable release

openrisc: traps: Don't send signals to kernel mode threads

[ Upstream commit c88cfb5cea5f8f9868ef02cc9ce9183a26dcf20f ]

OpenRISC exception handling sends signals to user processes on floating
point

openrisc: traps: Don't send signals to kernel mode threads

[ Upstream commit c88cfb5cea5f8f9868ef02cc9ce9183a26dcf20f ]

OpenRISC exception handling sends signals to user processes on floating
point exceptions and trap instructions (for debugging) among others.
There is a bug where the trap handling logic may send signals to kernel
threads, we should not send these signals to kernel threads, if that
happens we treat it as an error.

This patch adds conditions to die if the kernel receives these
exceptions in kernel mode code.

Fixes: 27267655c531 ("openrisc: Support floating point user api")
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

Merge drm/drm-fixes into drm-misc-fixes

Forwarding to v6.6-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'for-linus' of https://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:

- Fixes from me to cleanup all compiler warnings reported under
arch/openrisc

- One clean

Merge tag 'for-linus' of https://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:

- Fixes from me to cleanup all compiler warnings reported under
arch/openrisc

- One cleanup from Linus Walleij to convert pfn macros to static
inlines

* tag 'for-linus' of https://github.com/openrisc/linux:
openrisc: Remove kernel-doc marker from ioremap comment
openrisc: Remove unused tlb_init function
openriac: Remove unused nommu_dump_state function
openrisc: Include cpu.h and switch_to.h for prototypes
openrisc: Add prototype for die to bug.h
openrisc: Add prototype for show_registers to processor.h
openrisc: Declare do_signal function as static
openrisc: Add missing prototypes for assembly called fnctions
openrisc: Make pfn accessors statics inlines

show more ...

Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

openriac: Remove unused nommu_dump_state function

When compiling with W=1 enabling -Wmissing-prototypes the compiler
warns:

arch/openrisc/kernel/traps.c:146:6: error: no previous prototype for 'n

openriac: Remove unused nommu_dump_state function

When compiling with W=1 enabling -Wmissing-prototypes the compiler
warns:

arch/openrisc/kernel/traps.c:146:6: error: no previous prototype for 'nommu_dump_state' [-Werror=missing-prototypes]

This function is not used so remove it.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Closes: https://lore.kernel.org/linux-kernel/20230810141947.1236730-17-arnd@kernel.org/
Signed-off-by: Stafford Horne <shorne@gmail.com>

show more ...

openrisc: Add prototype for die to bug.h

When compiling with W=1 enabling -Wmissing-prototypes the compiler
warns:

arch/openrisc/kernel/traps.c:221:17: sing-prototypesrror: no previous prototype

openrisc: Add prototype for die to bug.h

When compiling with W=1 enabling -Wmissing-prototypes the compiler
warns:

arch/openrisc/kernel/traps.c:221:17: sing-prototypesrror: no previous prototype for 'die' [-Werror=missing-prototypes]

Fix by adding the prototype to the appropriate header file and including
the header file in the appropriate C files.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Closes: https://lore.kernel.org/linux-kernel/20230810141947.1236730-17-arnd@kernel.org/
Signed-off-by: Stafford Horne <shorne@gmail.com>

show more ...

openrisc: Add prototype for show_registers to processor.h

When compiling with W=1 enabling -Wmissing-prototypes the compiler
warns:

arch/openrisc/kernel/traps.c:67:6: error: no previous prototype

openrisc: Add prototype for show_registers to processor.h

When compiling with W=1 enabling -Wmissing-prototypes the compiler
warns:

arch/openrisc/kernel/traps.c:67:6: error: no previous prototype for 'show_registers' [-Werror=missing-prototypes]

Fix by adding the prototype to the appropriate header file and including
the header file in the appropriate C files.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Closes: https://lore.kernel.org/linux-kernel/20230810141947.1236730-17-arnd@kernel.org/
Signed-off-by: Stafford Horne <shorne@gmail.com>

show more ...

openrisc: Add missing prototypes for assembly called fnctions

These functions are all called from assembly files so there is no need
for a prototype in a header file, but when compiling with W=1 ena

openrisc: Add missing prototypes for assembly called fnctions

These functions are all called from assembly files so there is no need
for a prototype in a header file, but when compiling with W=1 enabling
-Wmissing-prototypes the compiler warns:

arch/openrisc/kernel/ptrace.c:191:17: error: no previous prototype for 'do_syscall_trace_enter' [-Werror=missing-prototypes]
arch/openrisc/kernel/ptrace.c:210:17: error: no previous prototype for 'do_syscall_trace_leave' [-Werror=missing-prototypes]
arch/openrisc/kernel/signal.c:293:1: error: no previous prototype for 'do_work_pending' [-Werror=missing-prototypes]
arch/openrisc/kernel/signal.c:68:17: error: no previous prototype for '_sys_rt_sigreturn' [-Werror=missing-prototypes]
arch/openrisc/kernel/time.c:111:25: error: no previous prototype for 'timer_interrupt' [-Werror=missing-prototypes]
arch/openrisc/kernel/traps.c:239:17: error: no previous prototype for 'unhandled_exception' [-Werror=missing-prototypes]
arch/openrisc/kernel/traps.c:246:17: error: no previous prototype for 'do_fpe_trap' [-Werror=missing-prototypes]
arch/openrisc/kernel/traps.c:268:17: error: no previous prototype for 'do_trap' [-Werror=missing-prototypes]
arch/openrisc/kernel/traps.c:273:17: error: no previous prototype for 'do_unaligned_access' [-Werror=missing-prototypes]
arch/openrisc/kernel/traps.c:286:17: error: no previous prototype for 'do_bus_fault' [-Werror=missing-prototypes]
arch/openrisc/kernel/traps.c:462:17: error: no previous prototype for 'do_illegal_instruction' [-Werror=missing-prototypes]
arch/openrisc/mm/fault.c:44:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]

Since these are not needed in header files, fix these by adding
prototypes to the top of the respective C files.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Closes: https://lore.kernel.org/linux-kernel/20230810141947.1236730-17-arnd@kernel.org/
Signed-off-by: Stafford Horne <shorne@gmail.com>

show more ...

Merge tag 'v6.4' into next

Sync up with mainline to bring in updates to shared infrastructure.

Merge branch 'for-6.5/apple' into for-linus

- improved support for Keychron K8 keyboard (Lasse Brun)

Merge drm/drm-next into drm-misc-next-fixes

Backmerging to sync drm-misc-next-fixes with drm-misc-next.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patche

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patches depend on these helpers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

show more ...

Merge tag 'v6.4-rc4' into wpan-next/staging

Linux 6.4-rc4

Merge drm/drm-next into drm-intel-gt-next

For conflict avoidance we need the following commit:

c9a9f18d3ad8 drm/i915/huc: use const struct bus_type pointers

Signed-off-by: Tvrtko Ursulin <tvrtko

Merge drm/drm-next into drm-intel-gt-next

For conflict avoidance we need the following commit:

c9a9f18d3ad8 drm/i915/huc: use const struct bus_type pointers

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

show more ...

Merge drm/drm-next into drm-intel-next

Backmerge to get some hwmon dependencies.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-fixes into drm-misc-fixes

Let's bring 6.4-rc1 in drm-misc-fixes to start the new fix cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge drm/drm-next into drm-misc-next

Start the 6.5 release cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge tag 'for-linus' of https://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:
"Two things for OpenRISC this cycle:

- Small cleanup for device tree cpu iteration from Rob

Merge tag 'for-linus' of https://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:
"Two things for OpenRISC this cycle:

- Small cleanup for device tree cpu iteration from Rob Herring

- Add support for storing, restoring and accessing user space FPU
state, to allow for libc to support the FPU on OpenRISC"

* tag 'for-linus' of https://github.com/openrisc/linux:
openrisc: Add floating point regset
openrisc: Support floating point user api
openrisc: Support storing and restoring fpu state
openrisc: Properly store r31 to pt_regs on unhandled exceptions
openrisc: Use common of_get_cpu_node() instead of open-coding

show more ...

openrisc: Support floating point user api

Add support for handling floating point exceptions and forwarding the
SIGFPE signal to processes. Also, add fpu state to sigcontext.

Signed-off-by: Staffo

openrisc: Support floating point user api

Add support for handling floating point exceptions and forwarding the
SIGFPE signal to processes. Also, add fpu state to sigcontext.

Signed-off-by: Stafford Horne <shorne@gmail.com>

show more ...

openrisc: Support storing and restoring fpu state

OpenRISC floating point state is not so expensive to save as OpenRISC uses
general purpose registers for floating point instructions. We need to sa

openrisc: Support storing and restoring fpu state

OpenRISC floating point state is not so expensive to save as OpenRISC uses
general purpose registers for floating point instructions. We need to save
only the floating point status and control register, FPCSR.

Add support to maintain the FPCSR unconditionally upon exceptions and
switches. On machines that do not support FPU this will always just
store 0x0 and restore is a no-op. On FPU systems this adds an
additional special purpose register read/write and read/write to memory
(already cached).

Signed-off-by: Stafford Horne <shorne@gmail.com>

show more ...

Merge branch 'main' into zstd-linus

Merge branch 'main' into zstd-next

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

show more ...

Merge part of branch 'for-next.instantiate' into for-next