Marcelo Tosatti wrote:
> On Thu, Apr 08, 2010 at 11:05:56AM +0300, Avi Kivity wrote:
>> On 04/08/2010 10:54 AM, Jan Kiszka wrote:
>> Looks like KVM_SET_REGS should write rmode.save_iopl (and a new save_vm)?
>>
> Just like we manipulate the flags for guest debugging in the
> set/get_
On Thu, Apr 08, 2010 at 09:54:35AM +0200, Jan Kiszka wrote:
> The following patch fixes it, but it has some drawbacks:
>
> - cpu_synchronize_state+writeback is noticeably slow with tpr patching,
> this makes it slower.
>
>
> >>> Isn't it a very rare event?
On 04/08/2010 05:16 PM, Marcelo Tosatti wrote:
On Thu, Apr 08, 2010 at 11:05:56AM +0300, Avi Kivity wrote:
On 04/08/2010 10:54 AM, Jan Kiszka wrote:
Looks like KVM_SET_REGS should write rmode.save_iopl (and a new save_vm)?
Just like we manipulate the flags for
On Thu, Apr 08, 2010 at 11:05:56AM +0300, Avi Kivity wrote:
> On 04/08/2010 10:54 AM, Jan Kiszka wrote:
> >
> Looks like KVM_SET_REGS should write rmode.save_iopl (and a new save_vm)?
>
> >>>Just like we manipulate the flags for guest debugging in the
> >>>set/get_rflags vendor handlers, t
On 04/08/2010 10:54 AM, Jan Kiszka wrote:
Looks like KVM_SET_REGS should write rmode.save_iopl (and a new save_vm)?
Just like we manipulate the flags for guest debugging in the
set/get_rflags vendor handlers, the same should happen for IOPL and VM.
This is no business of enter_p
Avi Kivity wrote:
> On 04/08/2010 10:22 AM, Jan Kiszka wrote:
>> Avi Kivity wrote:
>>
>>> On 04/07/2010 11:24 PM, Marcelo Tosatti wrote:
>>>
During initialization, WinXP.32 switches to virtual-8086 mode, with
paging enabled, to use VGABIOS functions.
Since enter_pmode
On 04/08/2010 10:22 AM, Jan Kiszka wrote:
Avi Kivity wrote:
On 04/07/2010 11:24 PM, Marcelo Tosatti wrote:
During initialization, WinXP.32 switches to virtual-8086 mode, with
paging enabled, to use VGABIOS functions.
Since enter_pmode unconditionally clears IOPL and VM bits in RFLAGS
Avi Kivity wrote:
> On 04/07/2010 11:24 PM, Marcelo Tosatti wrote:
>> During initialization, WinXP.32 switches to virtual-8086 mode, with
>> paging enabled, to use VGABIOS functions.
>>
>> Since enter_pmode unconditionally clears IOPL and VM bits in RFLAGS
>>
>> flags = vmcs_readl(GUEST_RF
On 04/07/2010 11:24 PM, Marcelo Tosatti wrote:
During initialization, WinXP.32 switches to virtual-8086 mode, with
paging enabled, to use VGABIOS functions.
Since enter_pmode unconditionally clears IOPL and VM bits in RFLAGS
flags = vmcs_readl(GUEST_RFLAGS);
flags&= ~(X86_EFLA
During initialization, WinXP.32 switches to virtual-8086 mode, with
paging enabled, to use VGABIOS functions.
Since enter_pmode unconditionally clears IOPL and VM bits in RFLAGS
flags = vmcs_readl(GUEST_RFLAGS);
flags &= ~(X86_EFLAGS_IOPL | X86_EFLAGS_VM);
flags |= (vmx->
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