From: Bharat Kumar Gogada <bharatku@xilinx.com>
To: "linux-mm@kvack.org" <linux-mm@kvack.org>
Cc: "jglisse@redhat.com" <jglisse@redhat.com>
Subject: HMM hmm_range parameter usage
Date: Mon, 6 Jun 2022 12:27:20 +0000 [thread overview]
Message-ID: <BY5PR02MB69474464D28B2E205FE47146A5A29@BY5PR02MB6947.namprd02.prod.outlook.com> (raw)
Hi All,
In 5.4 kernel hmm_range structure has pfn_shift parameter.
This parameter is removed in the latest kernel.
Can any one help me understand usage of this parameter ?
In 5.4 kernel, if this parameter set to PAGE_SHIFT, does it mean HMM framework
expects user buffers to be 4K aligned, i.e which are allocated via mmap/aligned_alloc ?
Does HMM have any alignment requirements in 5.4 or current kernel ? Will it work
with buffers allocated via malloc ?
Regards,
bharat
next reply other threads:[~2022-06-06 12:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-06 12:27 Bharat Kumar Gogada [this message]
2022-06-06 13:56 ` Alistair Popple
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