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Re: [Qemu-stable] [Qemu-devel] [PATCH v2] memory: fix limiting of transl
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From: |
Peter Maydell |
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Subject: |
Re: [Qemu-stable] [Qemu-devel] [PATCH v2] memory: fix limiting of translation at a page boundary |
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Date: |
Mon, 10 Feb 2014 18:24:10 +0000 |
On 7 February 2014 14:47, Paolo Bonzini <address@hidden> wrote:
> Commit 360e607 (address_space_translate: do not cross page boundaries,
> 2014-01-30) broke MMIO accesses in cases where the section is shorter
> than the full register width. This can happen for example with the
> Bochs DISPI registers, which are 16 bits wide but have only a 1-byte
> long MemoryRegion (if you write to the "second byte" of the register
> your access is discarded; it doesn't write only to half of the register).
>
> Restrict the action of commit 360e607 to direct RAM accesses. This
> is enough for Xen, since MMIO will not go through the mapcache.
>
> Reported-by: Mark Cave-Ayland <address@hidden>
> Cc: address@hidden
> Signed-off-by: Paolo Bonzini <address@hidden>
Applied to master, thanks.
-- PMM