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Re: [PATCH v2 0/3] drop writes to read-only ram device & vfio regions
From: |
Peter Maydell |
Subject: |
Re: [PATCH v2 0/3] drop writes to read-only ram device & vfio regions |
Date: |
Fri, 3 Apr 2020 13:53:12 +0100 |
On Fri, 3 Apr 2020 at 09:13, Yan Zhao <address@hidden> wrote:
>
> patch 1 modifies handler of ram device memory regions to drop guest writes
> to read-only ram device memory regions
>
> patch 2 modifies handler of non-mmap'd read-only vfio regions to drop guest
> writes to those regions
>
> patch 3 let mmap'd read-only vfio regions be able to generate vmexit for
> guest write. so, without patch 1, host qemu would crash on guest write to
> this read-only region. with patch 1, host qemu would drop the writes.
Just FYI, there seems to be a minor clock or timezone issue with
however you're sending these emails: the Date header you
sent reads "Date: Fri, 3 Apr 2020 16:56:57 +0000" but that
time in the UTC +0000 timezone is (as I write this) still several
hours in the future. This isn't a big deal but you probably want
to look into fixing it.
(Noticed because the wrong-date makes your patches stick to
the top of the https://patchew.org/QEMU/ list even after other
patches arrive after them.)
thanks
-- PMM