On Tue, Sep 20, 2016 at 10:04:58PM +0530, Nikunj A Dadhania wrote:
> PowerPC failed to handle broadcast TLB flush operations. Executing 
> instructions that are defined architecturally as synchronizing global TLB 
> should have a global effect.
> * tlbie on BookS
> * tlbivax on BookE
> * H_CALLs (H_REMOVE, H_BULK_REMOVE and H_PROTECT) in case of pseries, 
>   since they contain a tlbie on a real hypervisor.
> The implementation provides a single point that can be used in MTTCG for 
> doing async-flushes.
> The patchset introduces bit-flags in CPUPPCState::tlb_need_flush:
>   TLB_NEED_LOCAL_FLUSH (0x1) - Flush local tlb
>   TLB_NEED_GLOBAL_FLUSH (0x2) - Flush tlb on other cpus.
> Note: Tested patches on commit ebc231d(Merge remote-tracking branch 
> 'remotes/awilliam/tags/vfio-fixes-20160915.0' into staging), as ppc64 
> system emulation is broken after that.

Applied to ppc-for-2.8.  I did make a couple of small tweaks to
patches 2 & 3.

David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!

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