Re: [Xen-devel] [PATCH 3/3] x86/vMSI-X: also snoop REP MOVS

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 28/04/16 10:50, Jan Beulich wrote:
> ... as at least certain versions of Windows use such to update the
> MSI-X table. However, to not overly complicate the logic for now
> - only EFLAGS.DF=0 is being handled,
> - only updates not crossing MSI-X table entry boundaries are handled.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

IMO, under those circumstances we should domain_crash() and be rather
loud on the console.

Perhaps in a debug build only, but this will be a very unpleasant issue
to debug for whomever finds an OS which falls into of those unhandled
situations.

~Andrew

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