>>> On 27.09.17 at 14:39, wrote:
> --- a/xen/arch/x86/hvm/emulate.c
> +++ b/xen/arch/x86/hvm/emulate.c
> @@ -498,6 +498,170 @@ static int hvmemul_do_mmio_addr(paddr_t mmio_gpa,
> }
>
> /*
> + * Map the frame(s) covering an individual linear access, for writeable
> + * access. May return NULL
>>> On 27.09.17 at 14:39, wrote:
> From: Andrew Cooper
>
> An access which crosses a page boundary is performed atomically by x86
> hardware, albeit with a severe performance penalty. An important corner
> case
> is when a straddled access hits two pages which differ in whether a
> translation
From: Andrew Cooper
An access which crosses a page boundary is performed atomically by x86
hardware, albeit with a severe performance penalty. An important corner case
is when a straddled access hits two pages which differ in whether a
translation exists, or in net access rights.
The use of hvm
