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From: Jarkko Sakkinen <jarkko@kernel.org>
To: Tony Luck <tony.luck@intel.com>,
	Sean Christopherson <seanjc@google.com>,
	Dave Hansen <dave.hansen@intel.com>
Cc: Cathy Zhang <cathy.zhang@intel.com>, linux-sgx@vger.kernel.org
Subject: Re: [PATCH v7 1/7] x86/sgx: Add new sgx_epc_page flag bit to mark in-use pages
Date: Tue, 28 Sep 2021 05:28:32 +0300	[thread overview]
Message-ID: <29373cabc9ba55463b16b7d8148722997840fbb5.camel@kernel.org> (raw)
In-Reply-To: <20210927213452.212470-2-tony.luck@intel.com>

On Mon, 2021-09-27 at 14:34 -0700, Tony Luck wrote:
> SGX EPC pages go through the following life cycle:
> 
>         DIRTY ---> FREE ---> IN-USE --\
>                     ^                 |
>                     \-----------------/
> 
> Recovery action for poison for a DIRTY or FREE page is simple. Just
> make sure never to allocate the page. IN-USE pages need some extra
> handling.
> 
> Add a new flag bit SGX_EPC_PAGE_IN_USE that is set when a page
> is allocated and cleared when the page is freed.
> 
> Notes:
> 
> 1) These transitions are made while holding the node->lock so that
>    future code that checks the flags while holding the node->lock
>    can be sure that if the SGX_EPC_PAGE_IN_USE bit is set, then the
>    page is on the free list.
> 
> 2) Initially while the pages are on the dirty list the
>    SGX_EPC_PAGE_IN_USE bit is set.
> 
> Signed-off-by: Tony Luck <tony.luck@intel.com>

Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>

/Jarkko


  reply	other threads:[~2021-09-28  2:28 UTC|newest]

Thread overview: 187+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-08 18:14 [PATCH 0/4] Basic recovery for machine checks inside SGX Tony Luck
2021-07-08 18:14 ` [PATCH 1/4] x86/sgx: Track phase and type of SGX EPC pages Tony Luck
2021-07-09 18:08   ` Jarkko Sakkinen
2021-07-09 18:09     ` Jarkko Sakkinen
2021-07-14 20:42   ` Reinette Chatre
2021-07-14 20:59     ` Luck, Tony
2021-07-14 21:21       ` Reinette Chatre
2021-07-14 23:08         ` Sean Christopherson
2021-07-14 23:39           ` Luck, Tony
2021-07-15 15:33             ` Sean Christopherson
2021-07-08 18:14 ` [PATCH 2/4] x86/sgx: Add basic infrastructure to recover from errors in SGX memory Tony Luck
2021-07-08 18:14 ` [PATCH 3/4] x86/sgx: Hook sgx_memory_failure() into mainline code Tony Luck
2021-07-08 18:14 ` [PATCH 4/4] x86/sgx: Add hook to error injection address validation Tony Luck
2021-07-19 18:20 ` [PATCH v2 0/6] Basic recovery for machine checks inside SGX Tony Luck
2021-07-19 18:20   ` [PATCH v2 1/6] x86/sgx: Provide indication of life-cycle of EPC pages Tony Luck
2021-07-19 18:28     ` Dave Hansen
2021-07-27  2:04     ` Sakkinen, Jarkko
2021-07-19 18:20   ` [PATCH v2 2/6] x86/sgx: Add infrastructure to identify SGX " Tony Luck
2021-07-19 18:20   ` [PATCH v2 3/6] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-07-27  2:08     ` Sakkinen, Jarkko
2021-07-19 18:20   ` [PATCH v2 4/6] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-07-19 18:20   ` [PATCH v2 5/6] x86/sgx: Hook sgx_memory_failure() into mainline code Tony Luck
2021-07-19 18:20   ` [PATCH v2 6/6] x86/sgx: Add hook to error injection address validation Tony Luck
2021-07-27  1:54   ` [PATCH v2 0/6] Basic recovery for machine checks inside SGX Sakkinen, Jarkko
2021-07-28 20:46   ` [PATCH v3 0/7] " Tony Luck
2021-07-28 20:46     ` [PATCH v3 1/7] x86/sgx: Provide indication of life-cycle of EPC pages Tony Luck
2021-07-28 22:12       ` Dave Hansen
2021-07-28 22:57         ` Luck, Tony
2021-07-28 23:12           ` Dave Hansen
2021-07-28 23:32             ` Sean Christopherson
2021-07-28 23:48               ` Luck, Tony
2021-07-29  0:07                 ` Sean Christopherson
2021-07-29  0:42                   ` Luck, Tony
2021-07-30  0:34           ` Jarkko Sakkinen
2021-07-30  0:33         ` Jarkko Sakkinen
2021-07-28 20:46     ` [PATCH v3 2/7] x86/sgx: Add infrastructure to identify SGX " Tony Luck
2021-07-28 22:19       ` Dave Hansen
2021-07-30  0:38         ` Jarkko Sakkinen
2021-07-30 16:46           ` Sean Christopherson
2021-07-30 16:50             ` Dave Hansen
2021-07-30 18:44               ` Luck, Tony
2021-07-30 20:35                 ` Dave Hansen
2021-07-30 23:35                   ` Luck, Tony
2021-08-03 21:34                     ` Matthew Wilcox
2021-08-03 23:49                       ` Luck, Tony
2021-08-02  8:52                 ` Jarkko Sakkinen
2021-08-02  8:51               ` Jarkko Sakkinen
2021-08-02  8:48             ` Jarkko Sakkinen
2021-07-28 20:46     ` [PATCH v3 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-07-30  0:42       ` Jarkko Sakkinen
2021-07-28 20:46     ` [PATCH v3 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-07-28 22:29       ` Dave Hansen
2021-07-28 23:00         ` Sean Christopherson
2021-07-28 20:46     ` [PATCH v3 5/7] x86/sgx: Hook sgx_memory_failure() into mainline code Tony Luck
2021-07-28 20:46     ` [PATCH v3 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-07-28 20:46     ` [PATCH v3 7/7] x86/sgx: Add documentation for SGX memory errors Tony Luck
2021-08-27 19:55     ` [PATCH v4 0/6] Basic recovery for machine checks inside SGX Tony Luck
2021-08-27 19:55       ` [PATCH v4 1/6] x86/sgx: Provide indication of life-cycle of EPC pages Tony Luck
2021-09-01  3:55         ` Jarkko Sakkinen
2021-08-27 19:55       ` [PATCH v4 2/6] x86/sgx: Add infrastructure to identify SGX " Tony Luck
2021-09-01  4:30         ` Jarkko Sakkinen
2021-08-27 19:55       ` [PATCH v4 3/6] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-08-27 19:55       ` [PATCH v4 4/6] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-08-27 19:55       ` [PATCH v4 5/6] x86/sgx: Hook sgx_memory_failure() into mainline code Tony Luck
2021-09-03  6:12         ` Jarkko Sakkinen
2021-09-03  6:56           ` Jarkko Sakkinen
2021-09-06 18:51             ` Luck, Tony
2021-09-07 14:07               ` Jarkko Sakkinen
2021-09-07 14:13                 ` Dave Hansen
2021-09-07 15:07                   ` Luck, Tony
2021-09-07 15:03                 ` Luck, Tony
2021-09-07 15:08                   ` Jarkko Sakkinen
2021-09-07 17:46                     ` Luck, Tony
2021-09-08  0:59                       ` Luck, Tony
2021-09-08 16:49                         ` Dave Hansen
2021-09-08  2:29                       ` Jarkko Sakkinen
2021-08-27 19:55       ` [PATCH v4 6/6] x86/sgx: Add hook to error injection address validation Tony Luck
2021-08-27 20:28       ` [PATCH v4 0/6] Basic recovery for machine checks inside SGX Borislav Petkov
2021-08-27 20:43         ` Sean Christopherson
2021-09-01  2:06       ` Jarkko Sakkinen
2021-09-01 14:48         ` Luck, Tony
2021-09-17 21:38       ` [PATCH v5 0/7] " Tony Luck
2021-09-17 21:38         ` [PATCH v5 1/7] x86/sgx: Provide indication of life-cycle of EPC pages Tony Luck
2021-09-21 21:28           ` Jarkko Sakkinen
2021-09-21 21:34             ` Luck, Tony
2021-09-22  5:17               ` Jarkko Sakkinen
2021-09-21 22:15             ` Dave Hansen
2021-09-22  5:27               ` Jarkko Sakkinen
2021-09-17 21:38         ` [PATCH v5 2/7] x86/sgx: Add infrastructure to identify SGX " Tony Luck
2021-09-21 20:23           ` Dave Hansen
2021-09-21 20:50             ` Luck, Tony
2021-09-21 22:32               ` Dave Hansen
2021-09-21 23:48                 ` Luck, Tony
2021-09-21 23:50                   ` Dave Hansen
2021-09-17 21:38         ` [PATCH v5 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-09-17 21:38         ` [PATCH v5 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-09-17 21:38         ` [PATCH v5 5/7] x86/sgx: Hook arch_memory_failure() into mainline code Tony Luck
2021-09-17 21:38         ` [PATCH v5 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-09-17 21:38         ` [PATCH v5 7/7] x86/sgx: Add check for SGX pages to ghes_do_memory_failure() Tony Luck
2021-09-22 18:21         ` [PATCH v6 0/7] Basic recovery for machine checks inside SGX Tony Luck
2021-09-22 18:21           ` [PATCH v6 1/7] x86/sgx: Provide indication of life-cycle of EPC pages Tony Luck
2021-09-23 20:21             ` Jarkko Sakkinen
2021-09-23 20:24               ` Jarkko Sakkinen
2021-09-23 20:46                 ` Luck, Tony
2021-09-23 22:11                   ` Luck, Tony
2021-09-28  2:13                     ` Jarkko Sakkinen
2021-09-22 18:21           ` [PATCH v6 2/7] x86/sgx: Add infrastructure to identify SGX " Tony Luck
2021-09-22 18:21           ` [PATCH v6 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-09-22 18:21           ` [PATCH v6 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-09-22 18:21           ` [PATCH v6 5/7] x86/sgx: Hook arch_memory_failure() into mainline code Tony Luck
2021-09-22 18:21           ` [PATCH v6 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-09-22 18:21           ` [PATCH v6 7/7] x86/sgx: Add check for SGX pages to ghes_do_memory_failure() Tony Luck
2021-09-27 21:34           ` [PATCH v7 0/7] Basic recovery for machine checks inside SGX Tony Luck
2021-09-27 21:34             ` [PATCH v7 1/7] x86/sgx: Add new sgx_epc_page flag bit to mark in-use pages Tony Luck
2021-09-28  2:28               ` Jarkko Sakkinen [this message]
2021-09-27 21:34             ` [PATCH v7 2/7] x86/sgx: Add infrastructure to identify SGX EPC pages Tony Luck
2021-09-28  2:30               ` Jarkko Sakkinen
2021-09-27 21:34             ` [PATCH v7 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-09-28  2:46               ` Jarkko Sakkinen
2021-09-28 15:41                 ` Luck, Tony
2021-09-28 20:11                   ` Jarkko Sakkinen
2021-09-28 20:53                     ` Luck, Tony
2021-09-30 14:40                       ` Jarkko Sakkinen
2021-09-30 18:02                         ` Luck, Tony
2021-09-27 21:34             ` [PATCH v7 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-09-27 21:34             ` [PATCH v7 5/7] x86/sgx: Hook arch_memory_failure() into mainline code Tony Luck
2021-09-27 21:34             ` [PATCH v7 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-09-27 21:34             ` [PATCH v7 7/7] x86/sgx: Add check for SGX pages to ghes_do_memory_failure() Tony Luck
2021-10-01 16:47             ` [PATCH v8 0/7] Basic recovery for machine checks inside SGX Tony Luck
2021-10-01 16:47               ` [PATCH v8 1/7] x86/sgx: Add new sgx_epc_page flag bit to mark in-use pages Tony Luck
2021-10-01 16:47               ` [PATCH v8 2/7] x86/sgx: Add infrastructure to identify SGX EPC pages Tony Luck
2021-10-01 16:47               ` [PATCH v8 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-10-04 23:24                 ` Jarkko Sakkinen
2021-10-01 16:47               ` [PATCH v8 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-10-04 23:30                 ` Jarkko Sakkinen
2021-10-01 16:47               ` [PATCH v8 5/7] x86/sgx: Hook arch_memory_failure() into mainline code Tony Luck
2021-10-01 16:47               ` [PATCH v8 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-10-01 16:47               ` [PATCH v8 7/7] x86/sgx: Add check for SGX pages to ghes_do_memory_failure() Tony Luck
2021-10-04 21:56               ` [PATCH v8 0/7] Basic recovery for machine checks inside SGX Reinette Chatre
2021-10-11 18:59               ` [PATCH v9 " Tony Luck
2021-10-11 18:59                 ` [PATCH v9 1/7] x86/sgx: Add new sgx_epc_page flag bit to mark in-use pages Tony Luck
2021-10-15 22:57                   ` Sean Christopherson
2021-10-11 18:59                 ` [PATCH v9 2/7] x86/sgx: Add infrastructure to identify SGX EPC pages Tony Luck
2021-10-22 10:43                   ` kernel test robot
2021-10-22 10:43                     ` kernel test robot
2021-10-11 18:59                 ` [PATCH v9 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-10-15 23:07                   ` Sean Christopherson
2021-10-15 23:32                     ` Luck, Tony
2021-10-11 18:59                 ` [PATCH v9 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-10-15 23:10                   ` Sean Christopherson
2021-10-15 23:19                     ` Luck, Tony
2021-10-11 18:59                 ` [PATCH v9 5/7] x86/sgx: Hook arch_memory_failure() into mainline code Tony Luck
2021-10-12 16:49                   ` Jarkko Sakkinen
2021-10-11 18:59                 ` [PATCH v9 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-10-12 16:50                   ` Jarkko Sakkinen
2021-10-11 18:59                 ` [PATCH v9 7/7] x86/sgx: Add check for SGX pages to ghes_do_memory_failure() Tony Luck
2021-10-12 16:51                   ` Jarkko Sakkinen
2021-10-12 16:48                 ` [PATCH v9 0/7] Basic recovery for machine checks inside SGX Jarkko Sakkinen
2021-10-12 17:57                   ` Luck, Tony
2021-10-18 20:25                 ` [PATCH v10 " Tony Luck
2021-10-18 20:25                   ` [PATCH v10 1/7] x86/sgx: Add new sgx_epc_page flag bit to mark free pages Tony Luck
2021-10-18 20:25                   ` [PATCH v10 2/7] x86/sgx: Add infrastructure to identify SGX EPC pages Tony Luck
2021-11-19 12:25                     ` kernel test robot
2021-11-19 12:25                       ` kernel test robot
2021-10-18 20:25                   ` [PATCH v10 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-10-18 20:25                   ` [PATCH v10 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-10-18 20:25                   ` [PATCH v10 5/7] x86/sgx: Hook arch_memory_failure() into mainline code Tony Luck
2021-10-20  9:06                     ` Naoya Horiguchi
2021-10-20 17:04                       ` Luck, Tony
2021-10-18 20:25                   ` [PATCH v10 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-10-18 20:25                   ` [PATCH v10 7/7] x86/sgx: Add check for SGX pages to ghes_do_memory_failure() Tony Luck
2021-10-26 22:00                   ` [PATCH v11 0/7] Basic recovery for machine checks inside SGX Tony Luck
2021-10-26 22:00                     ` [PATCH v11 1/7] x86/sgx: Add new sgx_epc_page flag bit to mark free pages Tony Luck
2021-11-15 20:22                       ` [tip: x86/sgx] " tip-bot2 for Tony Luck
2021-10-26 22:00                     ` [PATCH v11 2/7] x86/sgx: Add infrastructure to identify SGX EPC pages Tony Luck
2021-11-15 20:22                       ` [tip: x86/sgx] " tip-bot2 for Tony Luck
2021-10-26 22:00                     ` [PATCH v11 3/7] x86/sgx: Initial poison handling for dirty and free pages Tony Luck
2021-11-15 20:22                       ` [tip: x86/sgx] " tip-bot2 for Tony Luck
2021-10-26 22:00                     ` [PATCH v11 4/7] x86/sgx: Add SGX infrastructure to recover from poison Tony Luck
2021-11-15 20:22                       ` [tip: x86/sgx] " tip-bot2 for Tony Luck
2021-10-26 22:00                     ` [PATCH v11 5/7] x86/sgx: Hook arch_memory_failure() into mainline code Tony Luck
2021-11-15 20:22                       ` [tip: x86/sgx] " tip-bot2 for Tony Luck
2021-10-26 22:00                     ` [PATCH v11 6/7] x86/sgx: Add hook to error injection address validation Tony Luck
2021-11-15 20:22                       ` [tip: x86/sgx] " tip-bot2 for Tony Luck
2021-10-26 22:00                     ` [PATCH v11 7/7] x86/sgx: Add check for SGX pages to ghes_do_memory_failure() Tony Luck
2021-10-29 18:39                       ` Rafael J. Wysocki
2021-11-15 20:22                       ` [tip: x86/sgx] " tip-bot2 for Tony Luck

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