On 07/06/2019 13:40, Eliot Moss wrote:
> On 6/7/2019 5:06 AM, Nikos Nikoleris wrote:
>> Hi Eliot,
>>
>> gem5 already implements the AArch32 [1] and AArch64 [2] data cache
>> maintenance instructions by VA. Can you use these, or do you need to add
>> some custom functionality?
>>
>> [1]:
>> https://github.com/gem5/gem5/commit/eeb36e5b6e81c6b9ea6a0c3c97573e762e58ae05#diff-3d3b3ed6a45c8cdc9d511a13c6caaba6
>> [2]:
>> https://github.com/gem5/gem5/commit/0c0ccad52595e837301eebcf8597862d9abb4f9c#diff-3d3b3ed6a45c8cdc9d511a13c6caaba6
>
> Thank you, Nikos!
>
> I don't need custom functionality for these, but I am working from
> an older snapshot. Given the various _other_ customizations in this
> code base, I probably don't want to go overboard in updating Gem5.
>
> I am guessing that I may need more than just these two deltas.
>
> Do you (or does someone) have insight into the minimal set of patches
> I need to install in order to gain this particular functionality?
>
> Regards - Eliot
You might be able to add initial support with the following set of
changes - if you can deal with the conflicts - but you will be missing
fixes since then:
b05a197 arch-arm: Change the type of fault for dc ivac instructions
30e9431 arch-arm: Unify permission checks for dc * instructions
f54e874 arch-arm: Check cache maintenance insts for permission faults
c364f58 arch-arm: Turn dc ivac to dc civac when some conditions are met
4d9811c arch-arm: Fix printing of the data cache maintenance instructions
760e2eb arch-arm: Fix cache line size for cache maintenace inst
f4e27c3 arch-arm: Fault when dc ivac is executed from EL0
b72d69c mem-cache: Only pendingModified MSHRs can satisfy CMO snoops
0c0ccad arm: Add support for the dc {civac, cvac, cvau, ivac} instr
eeb36e5 arm: Add support for the mcr dc{ic,i,c}mvac, dccmvau instructions
b9edb35 mem-ruby: Prevent ruby from crashing on CMOs
7d70967 arm: Add CMO support for Non-Cacheable memory
099cb03 cpu: Add support for CMOs in the cpu models
3deff78 mem: Ignore clean requests in the abstract memory
eb27226 mem: Handle CMO responses in the snoop filter
4d8fb74 mem: Allow CMOs as snooping requests in the snoop filter
2f4fb22 mem: Co-ordination of CMOs in the xbar
9a49827 mem: Add support for handling CMOs in the MSHRs
149a501 mem: Add support for CMOs in the cache
2141c29 mem: Promote deferred targets only when the block is valid
e67c97e mem: Add support for cache maintenance operation requests
992fa99 mem: Support for specifying the destination of a WriteClean
2f6d69e mem: Add support for WriteClean packets in the memory system
d8afb86 mem: Add a WriteClean command to the packet class
ad000b5 mem-cache: Add support for checking whether a cache is busy
08e9f25 mem: Add function to check if the slave can receive a timing req
2f468fc mem: Add the notion of point of unification in the coherent xbar
85ef9b0 mem: Align the snoop behavior in the XBar for atomic and timing
8d43922 arch-arm: Allow dc ivac from EL0 when SCTLR_EL1.UCI=1
Cheers,
Nikos
IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended recipient,
please notify the sender immediately and do not disclose the contents to any
other person, use it for any purpose, or store or copy the information in any
medium. Thank you.
_______________________________________________
gem5-users mailing list
gem5-users@gem5.org
http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
