>
> > In the original process of dma_map/unmap pages for VFIO-devices, to
> > make sure the pages are contiguous, we have to check them one by one.
> > As a result, dma_map/unmap could spend a long time.
> > Using the hugetlb pages, we can avoid this problem.
> > All pages in hugetlb pages are co
>
> On 2020/8/28 下午10:24, Peter Xu wrote:
> > On Fri, Aug 28, 2020 at 09:23:08AM +0000, Maoming (maoming, Cloud
> Infrastructure Service Product Dept.) wrote:
> >> In hugetlb_put_pfn(), I delete unpin_user_pages_dirty_lock() and use some
> simple code to put hugetl
On Wed, Aug 26, 2020 at 01:56:43PM +, Maoming (maoming, Cloud
Infrastructure Service Product Dept.) wrote:
> > + /*
> > +* Unlike THP, the splitting should not happen for hugetlb pages.
> > +* Since PG_reserved is not relevant for compound pages, and the pfn of
&g
Hi,
Thanks for taking a look.
Some replies below:
On Fri, 14 Aug 2020 10:37:29 +0800
Ming Mao wrote:
> In the original process of pinning/unpinning pages for VFIO-devices,
> to make sure the pages are contiguous, we have to check them one by one.
> As a result, dma_map/unmap could spend a lon
-邮件原件-
发件人: Peter Xu [mailto:pet...@redhat.com]
发送时间: 2020年8月26日 4:59
收件人: Maoming (maoming, Cloud Infrastructure Service Product Dept.)
抄送: linux-kernel@vger.kernel.org; k...@vger.kernel.org;
alex.william...@redhat.com; coh...@redhat.com; Zhoujian (jay)
; Huangweidong (C
lex.william...@redhat.com]
> Sent: Tuesday, July 21, 2020 6:46 AM
> To: Zhoujian (jay)
> Cc: linux-kernel@vger.kernel.org; k...@vger.kernel.org;
> coh...@redhat.com; Maoming (maoming, Cloud Infrastructure Service
> Product Dept.) ; Huangweidong (C)
> ; Peter Xu ; Andrea
> Arcang
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