Merge branch irq/remove-handle-domain-irq-20211026 into irq/irqchip-next

* irq/remove-handle-domain-irq-20211026:
: Large rework of the architecture entry code from Mark Rutland.
: From the cove

Merge branch irq/remove-handle-domain-irq-20211026 into irq/irqchip-next

* irq/remove-handle-domain-irq-20211026:
: Large rework of the architecture entry code from Mark Rutland.
: From the cover letter:
:
: <quote>
: The handle_domain_{irq,nmi}() functions were oringally intended as a
: convenience, but recent rework to entry code across the kernel tree has
: demonstrated that they cause more pain than they're worth and prevent
: architectures from being able to write robust entry code.
:
: This series reworks the irq code to remove them, handling the necessary
: entry work consistently in entry code (be it architectural or generic).
: </quote>
MIPS: irq: Avoid an unused-variable error
irq: remove handle_domain_{irq,nmi}()
irq: remove CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
irq: riscv: perform irqentry in entry code
irq: openrisc: perform irqentry in entry code
irq: csky: perform irqentry in entry code
irq: arm64: perform irqentry in entry code
irq: arm: perform irqentry in entry code
irq: add a (temporary) CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
irq: nds32: avoid CONFIG_HANDLE_DOMAIN_IRQ
irq: arc: avoid CONFIG_HANDLE_DOMAIN_IRQ
irq: add generic_handle_arch_irq()
irq: unexport handle_irq_desc()
irq: simplify handle_domain_{irq,nmi}()
irq: mips: simplify do_domain_IRQ()
irq: mips: stop (ab)using handle_domain_irq()
irq: mips: simplify bcm6345_l1_irq_handle()
irq: mips: avoid nested irq_enter()

Signed-off-by: Marc Zyngier <maz@kernel.org>

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BackMerge tag 'v5.15-rc7' into drm-next

The msm next tree is based on rc3, so let's just backmerge rc7 before pulling it in.

Signed-off-by: Dave Airlie <airlied@redhat.com>

Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up the fixes from upstream.

Fix simple conflict on session.c related to the file position fix that
went upstream and is touched

Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up the fixes from upstream.

Fix simple conflict on session.c related to the file position fix that
went upstream and is touched by the active decomp changes in perf/core.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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irq: remove handle_domain_{irq,nmi}()

Now that entry code handles IRQ entry (including setting the IRQ regs)
before calling irqchip code, irqchip code can safely call
generic_handle_domain_irq(), an

irq: remove handle_domain_{irq,nmi}()

Now that entry code handles IRQ entry (including setting the IRQ regs)
before calling irqchip code, irqchip code can safely call
generic_handle_domain_irq(), and there's no functional reason for it to
call handle_domain_irq().

Let's cement this split of responsibility and remove handle_domain_irq()
entirely, updating irqchip drivers to call generic_handle_domain_irq().

For consistency, handle_domain_nmi() is similarly removed and replaced
with a generic_handle_domain_nmi() function which also does not perform
any entry logic.

Previously handle_domain_{irq,nmi}() had a WARN_ON() which would fire
when they were called in an inappropriate context. So that we can
identify similar issues going forward, similar WARN_ON_ONCE() logic is
added to the generic_handle_*() functions, and comments are updated for
clarity and consistency.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>

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irq: csky: perform irqentry in entry code

In preparation for removing HANDLE_DOMAIN_IRQ_IRQENTRY, have arch/csky
perform all the irqentry accounting in its entry code. As arch/csky uses
GENERIC_IRQ_

irq: csky: perform irqentry in entry code

In preparation for removing HANDLE_DOMAIN_IRQ_IRQENTRY, have arch/csky
perform all the irqentry accounting in its entry code. As arch/csky uses
GENERIC_IRQ_MULTI_HANDLER, we can use generic_handle_arch_irq() to do
so.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>

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irq: add a (temporary) CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY

Going forward we want architecture/entry code to perform all the
necessary work to enter/exit IRQ context, with irqchip code merely
handling

irq: add a (temporary) CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY

Going forward we want architecture/entry code to perform all the
necessary work to enter/exit IRQ context, with irqchip code merely
handling the mapping of the interrupt to any handler(s). Among other
reasons, this is necessary to consistently fix some longstanding issues
with the ordering of lockdep/RCU/tracing instrumentation which many
architectures get wrong today in their entry code.

Importantly, rcu_irq_{enter,exit}() must be called precisely once per
IRQ exception, so that rcu_is_cpu_rrupt_from_idle() can correctly
identify when an interrupt was taken from an idle context which must be
explicitly preempted. Currently handle_domain_irq() calls
rcu_irq_{enter,exit}() via irq_{enter,exit}(), but entry code needs to
be able to call rcu_irq_{enter,exit}() earlier for correct ordering
across lockdep/RCU/tracing updates for sequences such as:

lockdep_hardirqs_off(CALLER_ADDR0);
rcu_irq_enter();
trace_hardirqs_off_finish();

To permit each architecture to be converted to the new style in turn,
this patch adds a new CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY selected by all
current users of HANDLE_DOMAIN_IRQ, which gates the existing behaviour.
When CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY is not selected,
handle_domain_irq() requires entry code to perform the
irq_{enter,exit}() work, with an explicit check for this matching the
style of handle_domain_nmi().

Subsequent patches will:

1) Add the necessary IRQ entry accounting to each architecture in turn,
dropping CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY from that architecture's
Kconfig.

2) Remove CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY once it is no longer
selected.

3) Convert irqchip drivers to consistently use
generic_handle_domain_irq() rather than handle_domain_irq().

4) Remove handle_domain_irq() and CONFIG_HANDLE_DOMAIN_IRQ.

... which should leave us with a clear split of responsiblity across the
entry and irqchip code, making it possible to perform additional
cleanups and fixes for the aforementioned longstanding issues with entry
code.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Lots of simnple overlapping additions.

With a build fix from Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>

Merge brank 'mlx5_mkey' into rdma.git for-next

A small series to clean up the mlx5 mkey code across the mlx5_core and
InfiniBand.

* branch 'mlx5_mkey':
RDMA/mlx5: Attach ndescs to mlx5_ib_mkey

Merge brank 'mlx5_mkey' into rdma.git for-next

A small series to clean up the mlx5 mkey code across the mlx5_core and
InfiniBand.

* branch 'mlx5_mkey':
RDMA/mlx5: Attach ndescs to mlx5_ib_mkey
RDMA/mlx5: Move struct mlx5_core_mkey to mlx5_ib
RDMA/mlx5: Replace struct mlx5_core_mkey by u32 key
RDMA/mlx5: Remove pd from struct mlx5_core_mkey
RDMA/mlx5: Remove size from struct mlx5_core_mkey
RDMA/mlx5: Remove iova from struct mlx5_core_mkey

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

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Merge brank 'mlx5_mkey' into rdma.git for-next

A small series to clean up the mlx5 mkey code across the mlx5_core and
InfiniBand.

* branch 'mlx5_mkey':
RDMA/mlx5: Attach ndescs to mlx5_ib_mkey

Merge brank 'mlx5_mkey' into rdma.git for-next

A small series to clean up the mlx5 mkey code across the mlx5_core and
InfiniBand.

* branch 'mlx5_mkey':
RDMA/mlx5: Attach ndescs to mlx5_ib_mkey
RDMA/mlx5: Move struct mlx5_core_mkey to mlx5_ib
RDMA/mlx5: Replace struct mlx5_core_mkey by u32 key
RDMA/mlx5: Remove pd from struct mlx5_core_mkey
RDMA/mlx5: Remove size from struct mlx5_core_mkey
RDMA/mlx5: Remove iova from struct mlx5_core_mkey

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Merge tag 'v5.15-rc6' into regulator-5.16

Linux 5.15-rc6

Merge tag 'v5.15-rc6' into asoc-5.16

Linux 5.15-rc6

Merge 5.15-rc6 into driver-core-next

We need the driver-core fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge 5.15-rc6 into usb-next

We need the usb fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge 5.15-rc6 into tty-next

We need the serial/tty fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge 5.15-rc6 into staging-next

We need the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge 5.15-rc6 into char-misc-next

We need the char/misc fixes in here for merging and testing.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'csky-for-linus-5.15-rc6' of git://github.com/c-sky/csky-linux

Pull csky fixes from Guo Ren:
"Only 5 fixups:

- Make HAVE_TCM depend on !COMPILE_TEST

- bitops: Remove duplicate __c

Merge tag 'csky-for-linus-5.15-rc6' of git://github.com/c-sky/csky-linux

Pull csky fixes from Guo Ren:
"Only 5 fixups:

- Make HAVE_TCM depend on !COMPILE_TEST

- bitops: Remove duplicate __clear_bit define

- Select ARCH_WANT_FRAME_POINTERS only if compiler supports it

- Fixup regs.sr broken in ptrace

- don't let sigreturn play with priveleged bits of status register"

* tag 'csky-for-linus-5.15-rc6' of git://github.com/c-sky/csky-linux:
csky: Make HAVE_TCM depend on !COMPILE_TEST
csky: bitops: Remove duplicate __clear_bit define
csky: Select ARCH_WANT_FRAME_POINTERS only if compiler supports it
csky: Fixup regs.sr broken in ptrace
csky: don't let sigreturn play with priveleged bits of status register

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csky: Make HAVE_TCM depend on !COMPILE_TEST

Building csky:allmodconfig results in the following build errors.

arch/csky/mm/tcm.c:9:2: error:
#error "You should define ITCM_RAM_BASE"
9 | #erro

csky: Make HAVE_TCM depend on !COMPILE_TEST

Building csky:allmodconfig results in the following build errors.

arch/csky/mm/tcm.c:9:2: error:
#error "You should define ITCM_RAM_BASE"
9 | #error "You should define ITCM_RAM_BASE"
| ^~~~~
arch/csky/mm/tcm.c:14:2: error:
#error "You should define DTCM_RAM_BASE"
14 | #error "You should define DTCM_RAM_BASE"
| ^~~~~
arch/csky/mm/tcm.c:18:2: error:
#error "You should define correct DTCM_RAM_BASE"
18 | #error "You should define correct DTCM_RAM_BASE"

This is seen with compile tests since those enable HAVE_TCM,
but do not provide useful default values for ITCM_RAM_BASE or
DTCM_RAM_BASE. Disable HAVE_TCM for commpile tests to avoid
the error.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guo Ren <guoren@kernel.org>

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csky: Select ARCH_WANT_FRAME_POINTERS only if compiler supports it

Compiling csky:allmodconfig with an upstream C compiler results
in the following error.

csky-linux-gcc: error:
unrecognized comma

csky: Select ARCH_WANT_FRAME_POINTERS only if compiler supports it

Compiling csky:allmodconfig with an upstream C compiler results
in the following error.

csky-linux-gcc: error:
unrecognized command-line option '-mbacktrace';
did you mean '-fbacktrace'?

Select ARCH_WANT_FRAME_POINTERS only if gcc supports it to
avoid the error.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guo Ren <guoren@kernel.org>

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Merge branch 'pruss-fix' into fixes

Merge in a fix for pruss reset issue caused by enabling pruss for am335x.

Merge tag 'v5.15-rc2' into spi-5.15

Linux 5.15-rc2

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

Catch-up on 5.15-rc1 and sync with drm-intel-gt-next
to prepare the PXP topic branch.

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

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

Close the divergence which has caused patches not to apply and
have a solid baseline for the PXP patches that Rodrigo will send
a topic branch PR for.

Sign

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

Close the divergence which has caused patches not to apply and
have a solid baseline for the PXP patches that Rodrigo will send
a topic branch PR for.

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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

Kickstart new drm-misc-next cycle.

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

Merge branch 'linus' into smp/urgent

Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be rem

Merge branch 'linus' into smp/urgent

Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be removed.

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