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From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: linux-sgx@vger.kernel.org
Cc: sean.j.christopherson@intel.com, serge.ayoun@intel.com,
	shay.katz-zamir@intel.com
Subject: Re: [PATCH 1/2] x86/sgx: Wrap ENCLS[EWB]
Date: Sat, 14 Sep 2019 13:22:17 +0100	[thread overview]
Message-ID: <20190914122217.GA6299@linux.intel.com> (raw)
In-Reply-To: <20190912193809.29336-1-jarkko.sakkinen@linux.intel.com>

On Thu, Sep 12, 2019 at 08:38:08PM +0100, Jarkko Sakkinen wrote:
> A reclaimed page is represented by two entities:
> 
> 1. A version number in the Enclave Page Cache (EPC). Version numbers are
>    stored in Version Array (VA) pages [1].
> 2. Page contents and MAC [2] encrypted with a random transient key and the
>    version number in the system memory.
> 
> This commit introduces a wrapper function for ENCLS[EWB], which transforms
> a page from EPC to the system memory, resulting the forementioned entities.
> The reason for having struct sgx_ewb_context is that the reclaiming process
> can pin the resources in early phases of the page reclaiming process when a
> clean rollback from a failure (e.g. running out of memory) is still
> possible.

Ignore these. Sent by mistake.

In my tree in for-v23 there is already some alternative patches in
progress on top of my other v23 changes.

/Jarkko

      parent reply	other threads:[~2019-09-14 12:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-12 19:38 [PATCH 1/2] x86/sgx: Wrap ENCLS[EWB] Jarkko Sakkinen
2019-09-12 19:38 ` [PATCH 2/2] x86/sgx: Take sgx_ewb() into use Jarkko Sakkinen
2019-09-14 12:22 ` Jarkko Sakkinen [this message]

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