linux-kernel - Re: [RFC PATCH 09/14] nvme: Implement cross-controller reset completion

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Message-ID: <20251231235136.GQ3864520-mkhalfella@purestorage.com>
Date: Wed, 31 Dec 2025 15:51:36 -0800
From: Mohamed Khalfella <mkhalfella@...estorage.com>
To: Sagi Grimberg <sagi@...mberg.me>
Cc: Chaitanya Kulkarni <kch@...dia.com>, Christoph Hellwig <hch@....de>,
	Jens Axboe <axboe@...nel.dk>, Keith Busch <kbusch@...nel.org>,
	Aaron Dailey <adailey@...estorage.com>,
	Randy Jennings <randyj@...estorage.com>,
	John Meneghini <jmeneghi@...hat.com>,
	Hannes Reinecke <hare@...e.de>, linux-nvme@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 09/14] nvme: Implement cross-controller reset
 completion

On Sat 2025-12-27 12:24:17 +0200, Sagi Grimberg wrote:
> 
> > +	log = kmalloc(sizeof(*log), GFP_KERNEL);
> > +	if (!log)
> > +		return;
> > +
> > +	ret = nvme_get_log(ctrl, 0, NVME_LOG_CCR, 0x01,
> > +			   0x00, log, sizeof(*log), 0);
> > +	if (ret)
> > +		goto out;
> > +
> > +	spin_lock_irqsave(&ctrl->lock, flags);
> > +	for (i = 0; i < le16_to_cpu(log->ne); i++) {
> > +		entry = &log->entries[i];
> > +		if (entry->ccrs == 0)	/* skip in progress entries */
> > +			continue;
> 
> What does ccrs stand for?

Cross-Controller Reset Status

0x00 -> In Progress
0x01 -> Success
0x02 -> Failed
0x03 - 0xff -> Reserved