On 26/09/2023 9:10 am, Nikolay Borisov wrote:
> On 23.09.23 г. 12:41 ч., Xin Li wrote:
>> diff --git a/arch/x86/include/asm/trapnr.h
>> b/arch/x86/include/asm/trapnr.h
>> index f5d2325aa0b7..8d1154cdf787 100644
>> --- a/arch/x86/include/asm/trapnr.h
>> +++ b/arch/x86/include/asm/trapnr.h
>> @@ -2,6
On 15/09/2023 1:38 am, H. Peter Anvin wrote:
> On 9/14/23 17:33, andrew.coop...@citrix.com wrote:
>>
>> It's an assumption about what "definitely won't" be paravirt in the
>> future.
>>
>> XenPV stack handling is almost-FRED-like and has been for the better
>> part of two decades.
>>
>> You frequen
On 15/09/2023 2:01 am, H. Peter Anvin wrote:
> The whole bit with alternatives and pvops being separate is a major
> maintainability problem, and honestly it never made any sense in the
> first place. Never have two mechanisms to do one job; it makes it
> harder to grok their interactions.
This bi
On 15/09/2023 1:12 am, Thomas Gleixner wrote:
> On Fri, Sep 15 2023 at 00:46, andrew wrote:
>> On 15/09/2023 12:00 am, Thomas Gleixner wrote:
>>> So no. I'm fundamentally disagreeing with your recommendation. The way
>>> forward is:
>>>
>>> 1) Provide the native variant for wrmsrns(), i.e. rename
On 15/09/2023 12:00 am, Thomas Gleixner wrote:
>> and despite what Juergen said, I'm going to recommend that you do wire
>> this through the paravirt infrastructure, for the benefit of regular
>> users having a nice API, not because XenPV is expecting to do something
>> wildly different here.
> I f
On 14/09/2023 5:47 am, Xin Li wrote:
> Intel VT-x classifies events into eight different types, which is
> inherited by FRED for event identification. As such, event type
> becomes a common x86 concept, and should be defined in a common x86
> header.
>
> Add event type macros to , and use it in .
>
On 14/09/2023 5:47 am, Xin Li wrote:
> Add an always inline API __wrmsrns() to embed the WRMSRNS instruction
> into the code.
>
> Tested-by: Shan Kang
> Signed-off-by: Xin Li
> ---
> arch/x86/include/asm/msr.h | 18 ++
> 1 file changed, 18 insertions(+)
>
> diff --git a/arch/x86/
On 14/09/2023 7:09 am, Jan Beulich wrote:
> On 14.09.2023 08:03, Juergen Gross wrote:
>> On 14.09.23 06:47, Xin Li wrote:
>>> From: "H. Peter Anvin (Intel)"
>>>
>>> Any FRED CPU will always have the following features as its baseline:
>>>1) LKGS, load attributes of the GS segment but the base
On 14/09/2023 7:02 am, Juergen Gross wrote:
> On 14.09.23 06:47, Xin Li wrote:
>> Add an always inline API __wrmsrns() to embed the WRMSRNS instruction
>> into the code.
>>
>> Tested-by: Shan Kang
>> Signed-off-by: Xin Li
>
> In order to avoid having to add paravirt support for WRMSRNS I think
>
