On Sat, May 15, 2021 at 11:40:45AM +0100, Marc Zyngier wrote:
Hi Sasha,
On Sat, 15 May 2021 03:18:25 +0100, Sasha Levin sashal@kernel.org wrote:
This is a note to let you know that I've just added the patch titled
arm64: entry: factor irq triage logic into macrosto the 5.12-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: arm64-entry-factor-irq-triage-logic-into-macros.patch and it can be found in the queue-5.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
commit ec301e4d131aad1648e28305c8d02ae8265a50d7 Author: Marc Zyngier maz@kernel.org Date: Mon Mar 15 11:56:27 2021 +0000
arm64: entry: factor irq triage logic into macros [ Upstream commit 9eb563cdabe1d583c262042d5d44cc256f644543 ] 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 <marcan@marcan.st> Cc: James Morse <james.morse@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20210315115629.57191-5-mark.rutland@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>I don't think there is any reason for backporting this patch at this stage. It isn't a fix, and we don't plan to support the feature it subsequently enables in anything older than 5.13.
Unless there is a another pressing reason for adding this patch, I suggest it is dropped from 5.10, 5.11 and 5.12 stable branches.
Actually, looks like I took it to make 4d6a38da8e79 ("arm64: entry: always set GIC_PRIO_PSR_I_SET during entry") apply easier, does it make sense to keep it in this scenario?