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Date:   Tue, 26 Jul 2022 08:36:36 -0700
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Subject: Re: [PATCH] [v2] x86/sgx: Allow enclaves to use Asynchrounous Exit
 Notification
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To:     Kai Huang <kai.huang@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>, dave@sr71.net
Cc:     Jarkko Sakkinen <jarkko@kernel.org>,
        Andy Lutomirski <luto@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Sean Christopherson <seanjc@google.com>,
        Haitao Huang <haitao.huang@linux.intel.com>, x86@kernel.org,
        linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20220720191347.1343986-1-dave.hansen@linux.intel.com>
 <ab467244dd03b5f94bafe9068b1c02790033c18c.camel@intel.com>
From:   Dave Hansen <dave.hansen@intel.com>
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On 7/22/22 06:26, Kai Huang wrote:
> Did a quick look at the spec.  It appears ENCLU[EDECCSSA] should be used
> together with AEX-notify.  So besides advertising the new
> SGX_ATTR_ASYNC_EXIT_NOTIFY bit to the KVM guest, I think we should also
> advertise the ENCLU[EDECCSSA] support in guest's CPUID, like below (untested)?

Kai, would you care to send a new version of this with a proper SoB and
changelog integrating what you've learned since posting it?  It can be
merged along with AEX notify itself.