From: Jarkko Sakkinen <jarkko@kernel.org>
To: Kristen Carlson Accardi <kristen@linux.intel.com>
Cc: dave.hansen@linux.intel.com, tj@kernel.org,
linux-kernel@vger.kernel.org, linux-sgx@vger.kernel.org,
cgroups@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
zhiquan1.li@intel.com, Sean Christopherson <seanjc@google.com>
Subject: Re: [PATCH v2 14/18] x86/sgx: Add EPC OOM path to forcefully reclaim EPC
Date: Thu, 8 Dec 2022 15:21:44 +0000 [thread overview]
Message-ID: <Y5IBCOuF8X7jEK3+@kernel.org> (raw)
In-Reply-To: <20221202183655.3767674-15-kristen@linux.intel.com>
On Fri, Dec 02, 2022 at 10:36:50AM -0800, Kristen Carlson Accardi wrote:
> From: Sean Christopherson <sean.j.christopherson@intel.com>
>
> Introduce the OOM path for killing an enclave with the reclaimer
> is no longer able to reclaim enough EPC pages. Find a victim enclave,
> which will be an enclave with EPC pages remaining that are not
> accessible to the reclaimer ("unreclaimable"). Once a victim is
> identified, mark the enclave as OOM and zap the enclaves entire
> page range. Release all the enclaves resources except for the
> struct sgx_encl memory itself.
>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
> Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
> Cc: Sean Christopherson <seanjc@google.com>
Why this patch is dependent of all 13 patches before it?
Looks like something that is orthogonal to cgroups and could be
live by its own. At least it probably does not require all of
those patches, or does it?
Even without cgroups it would make sense to killing enclaves if
reclaimer gets stuck.
BR, Jarkko
next prev parent reply other threads:[~2022-12-08 15:22 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-02 18:36 [PATCH v2 00/18] Add Cgroup support for SGX EPC memory Kristen Carlson Accardi
2022-12-02 18:36 ` [PATCH v2 01/18] x86/sgx: Call cond_resched() at the end of sgx_reclaim_pages() Kristen Carlson Accardi
2022-12-02 21:33 ` Dave Hansen
2022-12-02 21:37 ` Kristen Carlson Accardi
2022-12-02 21:45 ` Dave Hansen
2022-12-02 22:17 ` Kristen Carlson Accardi
2022-12-02 22:37 ` Dave Hansen
2022-12-02 18:36 ` [PATCH v2 02/18] x86/sgx: Store struct sgx_encl when allocating new VA pages Kristen Carlson Accardi
2022-12-02 21:35 ` Dave Hansen
2022-12-02 21:40 ` Kristen Carlson Accardi
2022-12-02 21:48 ` Dave Hansen
2022-12-02 22:35 ` Sean Christopherson
2022-12-02 22:47 ` Dave Hansen
2022-12-02 22:49 ` Sean Christopherson
2022-12-02 18:36 ` [PATCH v2 03/18] x86/sgx: Add 'struct sgx_epc_lru_lists' to encapsulate lru list(s) Kristen Carlson Accardi
2022-12-02 21:39 ` Dave Hansen
2022-12-08 15:31 ` Jarkko Sakkinen
2022-12-08 18:03 ` Kristen Carlson Accardi
2022-12-02 18:36 ` [PATCH v2 04/18] x86/sgx: Use sgx_epc_lru_lists for existing active page list Kristen Carlson Accardi
2022-12-02 21:43 ` Dave Hansen
2022-12-02 21:51 ` Kristen Carlson Accardi
2022-12-02 22:10 ` Dave Hansen
2022-12-02 18:36 ` [PATCH v2 05/18] x86/sgx: Track epc pages on reclaimable or unreclaimable lists Kristen Carlson Accardi
2022-12-02 22:13 ` Dave Hansen
2022-12-02 22:28 ` Sean Christopherson
2022-12-02 18:36 ` [PATCH v2 06/18] x86/sgx: Introduce RECLAIM_IN_PROGRESS flag for EPC pages Kristen Carlson Accardi
2022-12-02 22:15 ` Dave Hansen
2022-12-08 15:46 ` Jarkko Sakkinen
2022-12-08 18:13 ` Kristen Carlson Accardi
2022-12-02 18:36 ` [PATCH v2 07/18] x86/sgx: Use a list to track to-be-reclaimed pages during reclaim Kristen Carlson Accardi
2022-12-02 22:33 ` Dave Hansen
2022-12-05 16:33 ` Kristen Carlson Accardi
2022-12-05 17:03 ` Dave Hansen
2022-12-05 18:25 ` Kristen Carlson Accardi
2022-12-02 18:36 ` [PATCH v2 08/18] x86/sgx: Allow reclaiming up to 32 pages, but scan 16 by default Kristen Carlson Accardi
2022-12-08 9:26 ` Jarkko Sakkinen
2022-12-08 9:27 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 09/18] x86/sgx: Return the number of EPC pages that were successfully reclaimed Kristen Carlson Accardi
2022-12-08 9:30 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 10/18] x86/sgx: Add option to ignore age of page during EPC reclaim Kristen Carlson Accardi
2022-12-08 9:37 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 11/18] x86/sgx: Prepare for multiple LRUs Kristen Carlson Accardi
2022-12-08 9:42 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 12/18] x86/sgx: Expose sgx_reclaim_pages() for use by EPC cgroup Kristen Carlson Accardi
2022-12-08 9:46 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 13/18] x86/sgx: Add helper to grab pages from an arbitrary EPC LRU Kristen Carlson Accardi
2022-12-08 9:56 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 14/18] x86/sgx: Add EPC OOM path to forcefully reclaim EPC Kristen Carlson Accardi
2022-12-08 15:21 ` Jarkko Sakkinen [this message]
2022-12-09 16:05 ` Kristen Carlson Accardi
2022-12-09 16:22 ` Dave Hansen
2022-12-12 18:09 ` Sean Christopherson
2022-12-26 20:43 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 15/18] cgroup/misc: Add per resource callbacks for css events Kristen Carlson Accardi
2022-12-08 14:53 ` Jarkko Sakkinen
2022-12-08 15:15 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 16/18] cgroup/misc: Prepare for SGX usage Kristen Carlson Accardi
2022-12-08 15:23 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 17/18] x86/sgx: Add support for misc cgroup controller Kristen Carlson Accardi
2022-12-08 15:30 ` Jarkko Sakkinen
2022-12-02 18:36 ` [PATCH v2 18/18] Docs/x86/sgx: Add description for cgroup support Kristen Carlson Accardi
2023-04-03 21:26 ` [EXTERNAL] [PATCH v2 00/18] Add Cgroup support for SGX EPC memory Anand Krishnamoorthi
2023-04-13 18:49 ` Anand Krishnamoorthi
2023-04-18 16:44 ` Mikko Ylinen
2023-04-27 16:53 ` Anand Krishnamoorthi
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