Alexey Kardashevskiy <a...@ozlabs.ru> writes:
> On 19/07/2019 07:28, Thiago Jung Bauermann wrote:
>>
>> Hello Segher,
>>
>> Thanks for your review and suggestions!
>>
>> Segher Boessenkool <seg...@kernel.crashing.org> writes:
>>
>>> (Sorry to hijack your reply).
>>>
>>> On Thu, Jul 18, 2019 at 06:11:48PM +1000, Alexey Kardashevskiy wrote:
>>>> On 13/07/2019 16:00, Thiago Jung Bauermann wrote:
>>>>> From: Ram Pai <linux...@us.ibm.com>
>>>>> +static int enter_secure_mode(unsigned long kbase, unsigned long fdt)
>>>>> +{
>>>>> + register uint64_t func asm("r3") = UV_ESM;
>>>>> + register uint64_t arg1 asm("r4") = (uint64_t)kbase;
>>>>> + register uint64_t arg2 asm("r5") = (uint64_t)fdt;
>>>>
>>>> What does UV do with kbase and fdt precisely? Few words in the commit
>>>> log will do.
>
>
> What about this one? :)
Sorry, I don't have an elaborate answer yet. The non-elaborate answer is
that the ultravisor uses the kbase and fdt as part of integrity checking
of the secure guest.
--
Thiago Jung Bauermann
IBM Linux Technology Center
