linux-kernel - Re: [PATCH v3 2/2] x86/sgx: Implement EUPDATESVN and opportunistically call it during first EPC page alloc

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Message-ID: <db1fd062-5a66-4942-82e2-c889dd645a7b@intel.com>
Date: Fri, 25 Apr 2025 14:23:08 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Elena Reshetova <elena.reshetova@...el.com>,
 "jarkko@...nel.org" <jarkko@...nel.org>, Kai Huang <kai.huang@...el.com>,
 "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>,
 Vincent Scarlata <vincent.r.scarlata@...el.com>,
 "x86@...nel.org" <x86@...nel.org>, Vishal Annapurve <vannapurve@...gle.com>,
 Chong Cai <chongc@...gle.com>, Asit K Mallick <asit.k.mallick@...el.com>,
 Erdem Aktas <erdemaktas@...gle.com>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "bondarn@...gle.com" <bondarn@...gle.com>,
 "dionnaglaze@...gle.com" <dionnaglaze@...gle.com>,
 Scott Raynor <scott.raynor@...el.com>
Subject: Re: [PATCH v3 2/2] x86/sgx: Implement EUPDATESVN and
 opportunistically call it during first EPC page alloc

On 4/25/25 14:04, Sean Christopherson wrote:
> Userspace is going to be waiting on ->release() no matter what.

Unless it isn't even involved and it happens automatically.