arm64: entry: Use irqentry_{enter_from,exit_to}_kernel_mode()

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The generic irqentry code now provides irqentry_enter_from_kernel_mode()
and irqentry_exit_to_kernel_mode(), which can be used when an exception
is known to be taken from kernel mode. These can be inlined into
architecture-specific entry code, and avoid redundant work to test
whether the exception was taken from user mode.

Use these in arm64_enter_from_kernel_mode() and
arm64_exit_to_kernel_mode(), which are only used for exceptions known to
be taken from kernel mode. This will remove a small amount of redundant
work, and will permit further changes to arm64_exit_to_kernel_mode() in
subsequent patches.

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

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Jinjie Ruan <ruanjinjie@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Vladimir Murzin <vladimir.murzin@arm.com>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

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Mark Rutland 2026-04-07 14:16:48 +01:00 • committed by Catalin Marinas

parent 6879ef1302

commit a07b7b2142

1 changed files with 2 additions and 2 deletions

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arch/arm64/kernel/entry-common.c

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