>>> On 27.09.17 at 14:11, wrote:
> On 27/09/17 12:48, Alexandru Stefan ISAILA wrote:
>> On Mi, 2017-09-27 at 09:38 +0100, Andrew Cooper wrote:
>>> On 27/09/2017 09:04, Alexandru Isaila wrote:
From: Andrew Cooper
-return X86EMUL_EXCEPTION;
-case HVMTRANS_bad_gf
On 27/09/17 12:48, Alexandru Stefan ISAILA wrote:
> On Mi, 2017-09-27 at 09:38 +0100, Andrew Cooper wrote:
>> On 27/09/2017 09:04, Alexandru Isaila wrote:
>>> From: Andrew Cooper
>>>
>>>
>>> -return X86EMUL_EXCEPTION;
>>> -case HVMTRANS_bad_gfn_to_mfn:
>>> -return hvmemul_linea
On Mi, 2017-09-27 at 09:38 +0100, Andrew Cooper wrote:
> On 27/09/2017 09:04, Alexandru Isaila wrote:
> >
> > From: Andrew Cooper
> >
> >
> > -return X86EMUL_EXCEPTION;
> > -case HVMTRANS_bad_gfn_to_mfn:
> > -return hvmemul_linear_mmio_write(addr, bytes, p_data,
> > pfec, hvmem
>>> On 27.09.17 at 10:38, wrote:
> On 27/09/2017 09:04, Alexandru Isaila wrote:
>> --- a/xen/arch/x86/hvm/emulate.c
>> +++ b/xen/arch/x86/hvm/emulate.c
>> @@ -498,6 +498,156 @@ static int hvmemul_do_mmio_addr(paddr_t mmio_gpa,
>> }
>>
>> /*
>> + * Map the frame(s) covering an individual linear
On 27/09/2017 09:04, Alexandru Isaila 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
> tran
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