linux-kernel - Re: [PATCH v2 4/6] selftests/sgx: Add SGX selftest augment_via_eaccept

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Date:   Wed, 31 Aug 2022 13:07:35 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Jarkko Sakkinen <jarkko@...nel.org>, <linux-sgx@...r.kernel.org>
CC:     Haitao Huang <haitao.huang@...ux.intel.com>,
        Vijay Dhanraj <vijay.dhanraj@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "Paul Menzel" <pmenzel@...gen.mpg.de>,
        Shuah Khan <shuah@...nel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 4/6] selftests/sgx: Add SGX selftest
 augment_via_eaccept_long

Hi Jarkko,

On 8/31/2022 10:38 AM, Jarkko Sakkinen wrote:
> From: Vijay Dhanraj <vijay.dhanraj@...el.com>
> 
> Add a new test case which is same as augment_via_eaccept but adds a
> larger number of EPC pages to stress test EAUG via EACCEPT.
> 
> Signed-off-by: Vijay Dhanraj <vijay.dhanraj@...el.com>
> Co-developed-by: Jarkko Sakkinen <jarkko@...nel.org>
> Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>
> ---
> v3:
> - Addressed Reinette's feedback:
>   https://lore.kernel.org/linux-sgx/bd5285dd-d6dd-8a46-fca9-728db5e2f369@intel.com/
> v2:
> - Addressed Reinette's feedback:
>   https://lore.kernel.org/linux-sgx/24bd8e42-ff4e-0090-d9e1-cd81e4807f21@intel.com/
> ---
>  tools/testing/selftests/sgx/load.c |   5 +-
>  tools/testing/selftests/sgx/main.c | 143 +++++++++++++++++++++++++----
>  tools/testing/selftests/sgx/main.h |   3 +-

Is this test passing on your system? This version is missing the change to
mrenclave_ecreate() that causes SGX_IOC_ENCLAVE_INIT to fail when I try it out.

>  3 files changed, 130 insertions(+), 21 deletions(-)
> 
> diff --git a/tools/testing/selftests/sgx/load.c b/tools/testing/selftests/sgx/load.c
> index 94bdeac1cf04..47b2786d6a77 100644
> --- a/tools/testing/selftests/sgx/load.c
> +++ b/tools/testing/selftests/sgx/load.c
> @@ -171,7 +171,8 @@ uint64_t encl_get_entry(struct encl *encl, const char *symbol)
>  	return 0;
>  }
>  
> -bool encl_load(const char *path, struct encl *encl, unsigned long heap_size)
> +bool encl_load(const char *path, struct encl *encl, unsigned long heap_size,
> +	       unsigned long edmm_size)
>  {
>  	const char device_path[] = "/dev/sgx_enclave";
>  	struct encl_segment *seg;
> @@ -300,7 +301,7 @@ bool encl_load(const char *path, struct encl *encl, unsigned long heap_size)
>  
>  	encl->src_size = encl->segment_tbl[j].offset + encl->segment_tbl[j].size;
>  
> -	for (encl->encl_size = 4096; encl->encl_size < encl->src_size; )
> +	for (encl->encl_size = 4096; encl->encl_size < encl->src_size + edmm_size;)
>  		encl->encl_size <<= 1;
>  
>  	return true;
> diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c
> index 9820b3809c69..c5aa9f323745 100644
> --- a/tools/testing/selftests/sgx/main.c
> +++ b/tools/testing/selftests/sgx/main.c
> @@ -23,6 +23,10 @@
>  
>  static const uint64_t MAGIC = 0x1122334455667788ULL;
>  static const uint64_t MAGIC2 = 0x8877665544332211ULL;
> +/* Message-ID: <DM8PR11MB55912A7F47A84EC9913A6352F6999@...PR11MB5591.namprd11.prod.outlook.com> */
> +static const uint64_t EDMM_SIZE_LONG = 8L * 1024L * 1024L * 1024L;
> +static const uint64_t TIMEOUT_LONG = 900; /* seconds */
> +

Apologies if my feedback was vague - I actually think that the comments in V1 added
valuable information, it was just the variation in formatting that was distracting.


Reinette