Re: [PATCH v3 0/19] irqdomain: fix mapping race and clean up locking
From: Johan Hovold <johan@kernel.org>
Date: 2023-01-16 13:58:12
Also in:
linux-mips, lkml, platform-driver-x86
On Tue, Dec 20, 2022 at 11:30:42AM +0800, Mark-PK Tsai wrote:
quoted
Parallel probing (e.g. due to asynchronous probing) of devices that share interrupts can currently result in two mappings for the same hardware interrupt to be created. This series fixes this mapping race and clean up the irqdomain locking so that in the end the global irq_domain_mutex is only used for managing the likewise global irq_domain_list, while domain operations (e.g. IRQ allocations) use per-domain (hierarchy) locking.
Tested-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com> We have the same issue and this patch series fix that. Thanks! Link: https://lore.kernel.org/lkml/20221219130620.21092-1-mark-pk.tsai@mediatek.com/ (local)
Thanks for confirming. I just sent a v4 with a couple of clarifying comments added to the final patch. Johan _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel