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From: Bharata B Rao <bharata@linux.ibm.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>,
	Jason Gunthorpe <jgg@mellanox.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	linux-nvdimm@lists.01.org
Subject: Re: add a not device managed memremap_pages v2
Date: Fri, 16 Aug 2019 16:18:06 +0530	[thread overview]
Message-ID: <20190816104806.GC8784@in.ibm.com> (raw)
In-Reply-To: <20190816065434.2129-1-hch@lst.de>

On Fri, Aug 16, 2019 at 08:54:30AM +0200, Christoph Hellwig wrote:
> Hi Dan and Jason,
> 
> Bharata has been working on secure page management for kvmppc guests,
> and one I thing I noticed is that he had to fake up a struct device
> just so that it could be passed to the devm_memremap_pages
> instrastructure for device private memory.
> 
> This series adds non-device managed versions of the
> devm_request_free_mem_region and devm_memremap_pages functions for
> his use case.

Tested this series with my patches that add secure page management
for kvmppc guests. These patches along with migrate_vma-cleanup
series are good-to-have to support secure guests on ultravisor enabled
POWER platforms.

Regards,
Bharata.

  parent reply	other threads:[~2019-08-16 10:48 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-16  6:54 add a not device managed memremap_pages v2 Christoph Hellwig
2019-08-16  6:54 ` Christoph Hellwig
2019-08-16  6:54 ` [PATCH 1/4] resource: add a not device managed request_free_mem_region variant Christoph Hellwig
2019-08-16  6:54   ` Christoph Hellwig
2019-08-16 21:01   ` Andrew Morton
2019-08-16 21:01     ` Andrew Morton
2019-08-18  9:03     ` Christoph Hellwig
2019-08-18  9:03       ` Christoph Hellwig
2019-08-16  6:54 ` [PATCH 2/4] memremap: remove the dev field in struct dev_pagemap Christoph Hellwig
2019-08-16  6:54   ` Christoph Hellwig
2019-08-16  6:54 ` [PATCH 3/4] memremap: don't use a separate devm action for devmap_managed_enable_get Christoph Hellwig
2019-08-16  6:54   ` Christoph Hellwig
2019-08-16  6:54 ` [PATCH 4/4] memremap: provide a not device managed memremap_pages Christoph Hellwig
2019-08-16  6:54   ` Christoph Hellwig
2019-08-16 21:00   ` Andrew Morton
2019-08-16 21:00     ` Andrew Morton
2019-08-18  9:04     ` Christoph Hellwig
2019-08-18  9:04       ` Christoph Hellwig
2019-08-16 10:48 ` Bharata B Rao [this message]
2019-08-16 12:34 ` add a not device managed memremap_pages v2 Jason Gunthorpe
2019-08-16 12:36   ` Christoph Hellwig
2019-08-16 12:40     ` Jason Gunthorpe
2019-08-16 12:40       ` Jason Gunthorpe
2019-08-16 23:59 ` Ira Weiny
2019-08-16 23:59   ` Ira Weiny

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