linux-kernel - Re: [RFC PATCH v2 0/1] firmware: smccc: Add support for Live Firmware Activation (LFA)

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Message-ID: <20251223230134.462535-1-vvidwans@nvidia.com>
Date: Tue, 23 Dec 2025 23:01:29 +0000
From: Vedashree Vidwans <vvidwans@...dia.com>
To: <salman.nabi@....com>
CC: <andre.przywara@....com>, <ardb@...nel.org>, <chao.gao@...el.com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-coco@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, <lpieralisi@...nel.org>,
	<mark.rutland@....com>, <sdonthineni@...dia.com>, <sudeep.holla@....com>,
	<vsethi@...dia.com>, <vwadekar@...dia.com>, Vedashree Vidwans
	<vvidwans@...dia.com>
Subject: Re: [RFC PATCH v2 0/1] firmware: smccc: Add support for Live Firmware Activation (LFA)

Hello Salman,

Thank you for the patch. As you might know, I am implementing the
interrupt interface for LFA driver. The LFA usecase I am working
with will validate both interrupt and sysfs interfaces of the LFA
driver. Hence, I would like to extend the driver posted here with
required changes. Please find the extended driver patches posted
at [1].
While working on this code, I realized that LFA driver should
use SMCCC 1.2+ version as per the LFA specification. And I have
included a patch to upgrade SMCCC version in the code.
As the initial LFA driver in this thread isn't merged yet, I would
like to request modification to this original patch based on
a review comment on my patch series.

Could we please come up with a strategy to incorporate the changes?
We are aiming to merge LFA patches to Linux kernel as soon as
possible. Since I am actively working on this driver, I will be
happy to revise the initial patch(with authors intact) and post
a fresh series for review.

Regards,
Veda

[1] https://lore.kernel.org/linux-arm-kernel/20251208221319.1524888-1-vvidwans@nvidia.com/