From: Jason Gunthorpe <jgg@nvidia.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
peterx@redhat.com, prime.zeng@hisilicon.com, cohuck@redhat.com
Subject: Re: [PATCH] vfio/pci: Handle concurrent vma faults
Date: Wed, 10 Mar 2021 14:40:11 -0400 [thread overview]
Message-ID: <20210310184011.GA2356281@nvidia.com> (raw)
In-Reply-To: <20210310113406.6f029fcf@omen.home.shazbot.org>
On Wed, Mar 10, 2021 at 11:34:06AM -0700, Alex Williamson wrote:
> > I think after the address_space changes this should try to stick with
> > a normal io_rmap_pfn_range() done outside the fault handler.
>
> I assume you're suggesting calling io_remap_pfn_range() when device
> memory is enabled,
Yes, I think I saw Peter thinking along these lines too
Then fault just always causes SIGBUS if it gets called
Jason
next prev parent reply other threads:[~2021-03-10 18:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-10 17:53 [PATCH] vfio/pci: Handle concurrent vma faults Alex Williamson
2021-03-10 18:14 ` Jason Gunthorpe
2021-03-10 18:34 ` Alex Williamson
2021-03-10 18:40 ` Jason Gunthorpe [this message]
2021-03-10 20:06 ` Peter Xu
2021-03-11 11:35 ` Christoph Hellwig
2021-03-11 16:35 ` Peter Xu
2021-03-12 19:16 ` Alex Williamson
2021-03-12 19:41 ` Jason Gunthorpe
2021-03-12 20:09 ` Alex Williamson
2021-03-12 20:58 ` Alex Williamson
2021-03-13 0:03 ` Jason Gunthorpe
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