Re: [PATCH v4 2/2] target/loongarch: Implement lbt registers save/restore function

[maobibo <maobibo@loongson.cn>]

Hi Tiezhu,

Does mainline gdb support to dump LBT register now?

Regards
Bibo Mao

On 2024/9/23 下午9:02, gaosong wrote:
> 在 2024/9/10 上午10:24, maobibo 写道:
>>
>>
>> On 2024/9/9 下午9:13, gaosong wrote:
>>> 在 2024/9/9 下午7:52, gaosong 写道:
>>>>
>>>>
>>>> 在 2024/9/4 下午2:18, Bibo Mao 写道:
>>>>> Six registers scr0 - scr3, eflags and ftop are added in percpu 
>>>>> vmstate.
>>>>> And two functions kvm_loongarch_get_lbt/kvm_loongarch_put_lbt are 
>>>>> added
>>>>> to save/restore lbt registers.
>>>>>
>>>>> Signed-off-by: Bibo Mao <maobibo@loongson.cn>
>>>>> ---
>>>>>   target/loongarch/cpu.h     | 12 ++++++++
>>>>>   target/loongarch/kvm/kvm.c | 60 
>>>>> ++++++++++++++++++++++++++++++++++++++
>>>>>   target/loongarch/machine.c | 24 +++++++++++++++
>>>>>   3 files changed, 96 insertions(+)
>>>>>
>>>>
>>>> Reviewed-by: Song Gao <gaosong@loongson.cn>
>>>>
>>>> Thanks
>>>> Song Gao
>>> Hi,  this patch need rebase.
>>>
>>> Applying: target/loongarch: Implement lbt registers save/restore 
>>> function
>>> error: sha1 information is lacking or useless 
>>> (target/loongarch/kvm/kvm.c).
>>> error: could not build fake ancestor
>>> Patch failed at 0001 target/loongarch: Implement lbt registers 
>>> save/restore function
>>
>> Hi Song,
>>
>> It can apply with the latest qemu version on my side, only that it 
>> fails to compile since kvm uapi header files need be updated.
>>
>> LBT patch on qemu side can be skipped here since it depends on LBT 
>> patch merged on kernel side firstly.
>>
> Hi,
> 
> The LBT patches already merged on kernel side.
> Could you update this series  and add a patch to support gdb LBT feature ?
> 
> Thanks.
> Song Gao
> 
>> Regards
>> Bibo Mao
>>>
>>>
>>> Thanks.
>>> Song Gao.
>>>
>