Thread (14 messages) 14 messages, 4 authors, 2021-03-24

Re: [PATCHv3 4/6] arm64: entry: factor irq triage logic into macros

From: Will Deacon <will@kernel.org>
Date: 2021-03-24 16:57:13
Also in: lkml

On Mon, Mar 15, 2021 at 11:56:27AM +0000, Mark Rutland wrote:
From: Marc Zyngier <maz@kernel.org>

In subsequent patches we'll allow an FIQ handler to be registered, and
FIQ exceptions will need to be triaged very similarly to IRQ exceptions.
So that we can reuse the existing logic, this patch factors the IRQ
triage logic out into macros that can be reused for FIQ.

The macros are named to follow the elX_foo_handler scheme used by the C
exception handlers. For consistency with other top-level exception
handlers, the kernel_entry/kernel_exit logic is not moved into the
macros. As FIQ will use a different C handler, this handler name is
provided as an argument to the macros.

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

Signed-off-by: Marc Zyngier <maz@kernel.org>
[Mark: rework macros, commit message, rebase before DAIF rework]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Hector Martin <redacted>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Thomas Gleixner <redacted>
Cc: Will Deacon <will@kernel.org>
---
 arch/arm64/kernel/entry.S | 80 +++++++++++++++++++++++++----------------------
 1 file changed, 43 insertions(+), 37 deletions(-)
Acked-by: Will Deacon <will@kernel.org>

Will

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help