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Re: [Qemu-devel] [RFC v4 1/9] exec.c: Add new exclusive bitmap to ram_li


From: alvise rigo
Subject: Re: [Qemu-devel] [RFC v4 1/9] exec.c: Add new exclusive bitmap to ram_list
Date: Wed, 12 Aug 2015 09:31:59 +0200

I think that tlb_flush_entry is not enough, since in theory another
vCPU could have a different TLB address referring the same phys
address.

alvise

On Tue, Aug 11, 2015 at 6:32 PM, Paolo Bonzini <address@hidden> wrote:
>
>
> On 11/08/2015 18:11, alvise rigo wrote:
>>> > Why flush the entire cache (I understand you mean TLB)?
>> Sorry, I meant the TLB.
>> If for each removal of an exclusive entry we set also the bit to 1, we
>> force the following LL to make a tlb_flush() on every vCPU.
>
> What if you only flush one entry with tlb_flush_entry (on every vCPU)?
>
> Paolo



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