Re: [RFC PATCH v3 1/2] KVM: arm64: Move CMOs from user_mem_abort to the fault handlers

[Will Deacon]

On Wed, Apr 07, 2021 at 04:31:31PM +0100, Alexandru Elisei wrote:
> On 3/26/21 3:16 AM, Yanan Wang wrote:
> > We currently uniformly permorm CMOs of D-cache and I-cache in function
> > user_mem_abort before calling the fault handlers. If we get concurrent
> > guest faults(e.g. translation faults, permission faults) or some really
> > unnecessary guest faults caused by BBM, CMOs for the first vcpu are
> 
> I can't figure out what BBM means.

Oh, I know that one! BBM means "Break Before Make". Not to be confused with
DBM (Dirty Bit Management) or BFM (Bit Field Move).

Will