Re: [Xen-devel] [PATCH v2 2/2] x86/HVM: split page straddling emulated accesses in more cases

[Olaf Hering <olaf@xxxxxxxxx>]

Am Mon, 03 Sep 2018 09:44:38 -0600
schrieb "Jan Beulich" <JBeulich@xxxxxxxx>:

> Assuming consecutive linear addresses map to all RAM or all MMIO is not
> correct. Nor is assuming that a page straddling MMIO access will access
> the same emulating component for both parts of the access. If a guest
> RAM read fails with HVMTRANS_bad_gfn_to_mfn and if the access straddles
> a page boundary, issue accesses separately for both parts.

> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Tested-by: Olaf Hering <olaf@xxxxxxxxx>

Olaf

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