linux-kernel - Re: [RFC/RFT PATCH 0/2] x86: sgx_vepc: implement ioctl to EREMOVE all pages

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Date:   Tue, 14 Sep 2021 19:07:10 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Jarkko Sakkinen <jarkko@...nel.org>,
        Yang Zhong <yang.zhong@...el.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org, x86@...nel.org,
        linux-sgx@...r.kernel.org, dave.hansen@...ux.intel.com
Subject: Re: [RFC/RFT PATCH 0/2] x86: sgx_vepc: implement ioctl to EREMOVE all
 pages

On 14/09/21 18:42, Jarkko Sakkinen wrote:
>> Let's wait for this patch to be accepted first.  I'll wait a little more
>> for Jarkko and Dave to comment on this, and include your "Tested-by".
>>
>> I will also add cond_resched() on the final submission.
> Why these would be conflicting tasks? I.e. why could not QEMU use
> what is available now and move forward using better mechanism, when
> they are available?

The implementation using close/open is quite ugly (destroying and 
recreating the memory block breaks a few levels of abstractions), so 
it's not really something I'd like to commit.

Paolo