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Date:   Thu, 22 Sep 2022 11:55:38 -0700
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Subject: Re: [RFC PATCH 03/20] x86/sgx: Track owning enclave in VA EPC pages
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To:     Kristen Carlson Accardi <kristen@linux.intel.com>,
        linux-kernel@vger.kernel.org, linux-sgx@vger.kernel.org,
        cgroups@vger.kernel.org, Jarkko Sakkinen <jarkko@kernel.org>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Cc:     Sean Christopherson <seanjc@google.com>
References: <20220922171057.1236139-1-kristen@linux.intel.com>
 <20220922171057.1236139-4-kristen@linux.intel.com>
From:   Dave Hansen <dave.hansen@intel.com>
In-Reply-To: <20220922171057.1236139-4-kristen@linux.intel.com>
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On 9/22/22 10:10, Kristen Carlson Accardi wrote:
> -struct sgx_epc_page *sgx_alloc_va_page(bool reclaim)
> +struct sgx_epc_page *sgx_alloc_va_page(struct sgx_encl *encl, bool reclaim)
>  {
>  	struct sgx_epc_page *epc_page;
>  	int ret;
> @@ -1218,6 +1219,8 @@ struct sgx_epc_page *sgx_alloc_va_page(bool reclaim)
>  		return ERR_PTR(-EFAULT);
>  	}
>  
> +	epc_page->owner = encl;
> +
>  	return epc_page;
>  }

BTW, is there a flag or any other way to tell to what kind of object
->owner points?