[PATCH v8 20/43] arm64: RME: Runtime faulting of memory

[Suzuki K Poulose]

On 19/05/2025 18:35, Suzuki K Poulose wrote:
> Hi Steven
> 
> On 16/04/2025 14:41, Steven Price wrote:
>> At runtime if the realm guest accesses memory which hasn't yet been
>> mapped then KVM needs to either populate the region or fault the guest.
>>
>> For memory in the lower (protected) region of IPA a fresh page is
>> provided to the RMM which will zero the contents. For memory in the
>> upper (shared) region of IPA, the memory from the memslot is mapped
>> into the realm VM non secure.
>>
>> Signed-off-by: Steven Price <steven.price at arm.com>

>> +    } else {
>> +        map_level = 3;
>> +        map_size = RMM_PAGE_SIZE;
>> +    }
>> +
>> +    for (offset = 0; offset < size; offset += map_size) {
>> +        /*
>> +         * realm_map_ipa() enforces that the memory is writable,
> 
> The function names seems to be obsolete, please fix.

Doh, it is in arch/arm64/kvm/mmu.c, please ignore this comment.

Suzuki