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Re: [Qemu-devel] [PATCH v3 18/29] s390x/tcg: MVCS/MVCP: Use access_memmo


From: David Hildenbrand
Subject: Re: [Qemu-devel] [PATCH v3 18/29] s390x/tcg: MVCS/MVCP: Use access_memmove()
Date: Wed, 18 Sep 2019 09:38:59 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 17.09.19 22:20, Richard Henderson wrote:
> On 9/16/19 9:57 AM, David Hildenbrand wrote:
>> As we are moving between address spaces, we can use access_memmove_idx()
>> without checking for destructive overlaps (especially of real storage
>> locations):
>>     "Each storage operand is processed left to right. The
>>     storage-operand-consistency rules are the same as
>>     for MOVE (MVC), except that when the operands
>>     overlap in real storage, the use of the common real-
>>     storage locations is not necessarily recognized."
>>
>> Signed-off-by: David Hildenbrand <address@hidden>
>> ---
>>  target/s390x/mem_helper.c | 26 ++++++++++++--------------
>>  1 file changed, 12 insertions(+), 14 deletions(-)
> 
> Comment references access_memmove_idx.

Indeed, thanks!

> 
> Reviewed-by: Richard Henderson <address@hidden>
> 
> 
> r~
> 


-- 

Thanks,

David / dhildenb



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