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

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [RFC v4 1/9] exec.c: Add new exclusive bitmap to ram_list
Date: Wed, 12 Aug 2015 16:10:54 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 

On 12/08/2015 16:04, alvise rigo wrote:
>> > clear algorithm:
>> >    if bytemap[vaddr] == 254
>> >       bytemap[vaddr] = CPU_ID
> Isn't this also required for the clear algorithm?
> 
>     if bytemap[vaddr] < 254
>         /* this can happen for the TLB_EXCL slow path effect */
>         bytemap[vaddr] = 255

I don't think so because clear doesn't clear TLB_EXCL.  But maybe we're
talking about two different things. :)

Paolo
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