Re: [qemu-s390x] [Qemu-devel] [PATCH v1 4/9] tcg: Enforce single page access in probe_write() for !CONFIG_USER_ONLY

[Richard Henderson]

On 8/23/19 8:28 AM, Richard Henderson wrote:
> On 8/23/19 3:07 AM, David Hildenbrand wrote:
>> While the CONFIG_USER_ONLY variant can handle multiple pages (no MMU), the
>> !CONFIG_USER_ONLY variant can't and won't. We'll want to convert
>> probe_write() to return a host address (similar to tlb_vaddr_to_host())
>> soon. This only works on page granularity.
>>
>> Signed-off-by: David Hildenbrand <address@hidden>
>> ---
>>  accel/tcg/cputlb.c | 2 ++
>>  1 file changed, 2 insertions(+)
> 
> As I just mentioned in the previous, I think the two implementations should 
> match.
> 
> Anyway, the "multiple pages" thing above still means exactly two, since if
> there were three pages involved we were only probing two of them, and the 
> third
> could still be unmapped.

Oh, but the actual code here, is fine.
Reviewed-by: Richard Henderson <address@hidden>


r~