linux-kernel - RE: [PATCH v7 5/6] vfio/nvgrace-gpu: Inform devmem unmapped after reset

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Message-ID:
 <CH3PR12MB75482651ACF44B640AEC10ECABDEA@CH3PR12MB7548.namprd12.prod.outlook.com>
Date: Wed, 26 Nov 2025 09:00:06 +0000
From: Shameer Kolothum <skolothumtho@...dia.com>
To: Ankit Agrawal <ankita@...dia.com>, "jgg@...pe.ca" <jgg@...pe.ca>, Yishai
 Hadas <yishaih@...dia.com>, "kevin.tian@...el.com" <kevin.tian@...el.com>,
	"alex@...zbot.org" <alex@...zbot.org>, Aniket Agashe <aniketa@...dia.com>,
	Vikram Sethi <vsethi@...dia.com>, Matt Ochs <mochs@...dia.com>
CC: "Yunxiang.Li@....com" <Yunxiang.Li@....com>, "yi.l.liu@...el.com"
	<yi.l.liu@...el.com>, "zhangdongdong@...incomputing.com"
	<zhangdongdong@...incomputing.com>, Avihai Horon <avihaih@...dia.com>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>, "peterx@...hat.com"
	<peterx@...hat.com>, "pstanner@...hat.com" <pstanner@...hat.com>, Alistair
 Popple <apopple@...dia.com>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Neo Jia
	<cjia@...dia.com>, Kirti Wankhede <kwankhede@...dia.com>, "Tarun Gupta
 (SW-GPU)" <targupta@...dia.com>, Zhi Wang <zhiw@...dia.com>, Dan Williams
	<danw@...dia.com>, Dheeraj Nigam <dnigam@...dia.com>, Krishnakant Jaju
	<kjaju@...dia.com>
Subject: RE: [PATCH v7 5/6] vfio/nvgrace-gpu: Inform devmem unmapped after
 reset



> -----Original Message-----
> From: Ankit Agrawal <ankita@...dia.com>
> Sent: 26 November 2025 05:26
> To: Ankit Agrawal <ankita@...dia.com>; jgg@...pe.ca; Yishai Hadas
> <yishaih@...dia.com>; Shameer Kolothum <skolothumtho@...dia.com>;
> kevin.tian@...el.com; alex@...zbot.org; Aniket Agashe
> <aniketa@...dia.com>; Vikram Sethi <vsethi@...dia.com>; Matt Ochs
> <mochs@...dia.com>
> Cc: Yunxiang.Li@....com; yi.l.liu@...el.com;
> zhangdongdong@...incomputing.com; Avihai Horon <avihaih@...dia.com>;
> bhelgaas@...gle.com; peterx@...hat.com; pstanner@...hat.com; Alistair
> Popple <apopple@...dia.com>; kvm@...r.kernel.org; linux-
> kernel@...r.kernel.org; Neo Jia <cjia@...dia.com>; Kirti Wankhede
> <kwankhede@...dia.com>; Tarun Gupta (SW-GPU) <targupta@...dia.com>;
> Zhi Wang <zhiw@...dia.com>; Dan Williams <danw@...dia.com>; Dheeraj
> Nigam <dnigam@...dia.com>; Krishnakant Jaju <kjaju@...dia.com>
> Subject: [PATCH v7 5/6] vfio/nvgrace-gpu: Inform devmem unmapped after
> reset
> 
> From: Ankit Agrawal <ankita@...dia.com>
> 
> Introduce a new flag reset_done to notify that the GPU has just
> been reset and the mapping to the GPU memory is zapped.
> 
> Implement the reset_done handler to set this new variable. It
> will be used later in the patches to wait for the GPU memory
> to be ready before doing any mapping or access.
> 
> Cc: Jason Gunthorpe <jgg@...pe.ca>
> Suggested-by: Alex Williamson <alex@...zbot.org>
> Signed-off-by: Ankit Agrawal <ankita@...dia.com>

Reviewed-by: Shameer Kolothum <skolothumtho@...dia.com>