linux-kernel - Re: [PATCH v2 03/18] cxl/pci: cxl_hdm_decode

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Message-ID: <Z6aHBuGwuEMy6Kc1@gourry-fedora-PF4VCD3F>
Date: Fri, 7 Feb 2025 17:19:50 -0500
From: Gregory Price <gourry@...rry.net>
To: Jim Kao <jim.kao@...nn-tech.com>
Cc: Robert Richter <rrichter@....com>,
	Alison Schofield <alison.schofield@...el.com>,
	Vishal Verma <vishal.l.verma@...el.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Davidlohr Bueso <dave@...olabs.net>,
	"linux-cxl@...r.kernel.org" <linux-cxl@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Fabio M. De Francesco" <fabio.m.de.francesco@...ux.intel.com>,
	Terry Bowman <terry.bowman@....com>
Subject: Re: [PATCH v2 03/18] cxl/pci: cxl_hdm_decode_init: Move comment

On Fri, Feb 07, 2025 at 09:36:08PM +0000, Jim Kao wrote:
> Do we have any limitation for HDM Decoder Range in Linux Kernel ?
> We has observed that Linux might be hung if range is larger than 8TB.
> 
> Jim
> 

Do you have any additional details? dmesg/core dumps, etc?

Seems pretty suspicious that it happens right on the 44-bit boundary.