From: Dave Hansen <dave.hansen@linux.intel.com>
To: Khalid Aziz <khalid.aziz@oracle.com>,
davem@davemloft.net, akpm@linux-foundation.org
Cc: corbet@lwn.net, bob.picco@oracle.com, steven.sistare@oracle.com,
pasha.tatashin@oracle.com, mike.kravetz@oracle.com,
rob.gardner@oracle.com, mingo@kernel.org,
nitin.m.gupta@oracle.com, anthony.yznaga@oracle.com,
kirill.shutemov@linux.intel.com, tom.hromatka@oracle.com,
allen.pais@oracle.com, tklauser@distanz.ch,
shannon.nelson@oracle.com, vijay.ac.kumar@oracle.com,
mhocko@suse.com, jack@suse.cz, punit.agrawal@arm.com,
hughd@google.com, thomas.tai@oracle.com,
ross.zwisler@linux.intel.com, dave.jiang@intel.com,
willy@infradead.org, minchan@kernel.org,
imbrenda@linux.vnet.ibm.com, aarcange@redhat.com,
kstewart@linuxfoundation.org, pombredanne@nexb.com,
tglx@linutronix.de, gregkh@linuxfoundation.org,
nagarathnam.muthusamy@oracle.com, linux@roeck-us.net,
jane.chu@oracle.com, dan.j.williams@intel.com,
jglisse@redhat.com, ktkhai@virtuozzo.com,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, sparclinux@vger.kernel.org,
Khalid Aziz <khalid@gonehiking.org>
Subject: Re: [PATCH v12 10/11] sparc64: Add support for ADI (Application Data Integrity)
Date: Mon, 5 Mar 2018 13:26:16 -0800 [thread overview]
Message-ID: <08ef65c1-16b3-44e7-5cc3-7b6bde7bd5a4@linux.intel.com> (raw)
In-Reply-To: <d8602e35e65c8bf6df1a85166bf181536a6f3664.1519227112.git.khalid.aziz@oracle.com>
On 02/21/2018 09:15 AM, Khalid Aziz wrote:
> +tag_storage_desc_t *alloc_tag_store(struct mm_struct *mm,
> + struct vm_area_struct *vma,
> + unsigned long addr)
...
> + tags = kzalloc(size, GFP_NOWAIT|__GFP_NOWARN);
> + if (tags == NULL) {
> + tag_desc->tag_users = 0;
> + tag_desc = NULL;
> + goto out;
> + }
> + tag_desc->start = addr;
> + tag_desc->tags = tags;
> + tag_desc->end = end_addr;
> +
> +out:
> + spin_unlock_irqrestore(&mm->context.tag_lock, flags);
> + return tag_desc;
> +}
OK, sorry, I missed this. I do see that you now have per-ADI-block tag
storage and it is not per-page.
How big can this storage get, btw? Superficially it seems like it might
be able to be gigantic for a large, sparse VMA.
next prev parent reply other threads:[~2018-03-05 21:26 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-21 17:15 [PATCH v12 00/11] Application Data Integrity feature introduced by SPARC M7 Khalid Aziz
2018-02-21 17:15 ` [PATCH v12 01/11] signals, sparc: Add signal codes for ADI violations Khalid Aziz
2018-02-21 20:58 ` Eric W. Biederman
2018-02-21 17:15 ` [PATCH v12 02/11] mm, swap: Add infrastructure for saving page metadata on swap Khalid Aziz
2018-03-05 19:20 ` Dave Hansen
2018-03-05 19:29 ` Khalid Aziz
2018-03-05 19:35 ` Dave Hansen
2018-03-05 20:28 ` Khalid Aziz
2018-03-05 21:04 ` Dave Hansen
2018-03-05 21:14 ` Khalid Aziz
2018-03-06 22:47 ` Andrew Morton
2018-02-21 17:15 ` [PATCH v12 03/11] sparc64: Add support for ADI register fields, ASIs and traps Khalid Aziz
2018-02-21 17:15 ` [PATCH v12 04/11] sparc64: Add HV fault type handlers for ADI related faults Khalid Aziz
2018-02-21 17:15 ` [PATCH v12 05/11] sparc64: Add handler for "Memory Corruption Detected" trap Khalid Aziz
2018-02-21 17:15 ` [PATCH v12 06/11] sparc64: Add auxiliary vectors to report platform ADI properties Khalid Aziz
2018-02-21 17:15 ` [PATCH v12 07/11] mm: Add address parameter to arch_validate_prot() Khalid Aziz
2018-02-26 5:54 ` Michael Ellerman
2018-03-06 22:48 ` Andrew Morton
2018-02-21 17:15 ` [PATCH v12 08/11] mm: Clear arch specific VM flags on protection change Khalid Aziz
2018-03-05 19:23 ` Dave Hansen
2018-03-05 20:38 ` Khalid Aziz
2018-03-06 22:48 ` Andrew Morton
2018-02-21 17:15 ` [PATCH v12 09/11] mm: Allow arch code to override copy_highpage() Khalid Aziz
2018-03-05 19:24 ` Dave Hansen
2018-03-05 20:42 ` Khalid Aziz
2018-03-05 20:56 ` Dave Hansen
2018-03-06 22:48 ` Andrew Morton
2018-02-21 17:15 ` [PATCH v12 10/11] sparc64: Add support for ADI (Application Data Integrity) Khalid Aziz
2018-02-23 2:50 ` kbuild test robot
2018-02-23 18:51 ` Khalid Aziz
2018-02-23 18:57 ` David Miller
2018-02-23 22:11 ` Khalid Aziz
2018-03-05 19:22 ` Dave Hansen
2018-03-05 21:14 ` Khalid Aziz
2018-03-05 21:26 ` Dave Hansen
2018-03-05 21:31 ` Dave Hansen
2018-03-05 22:55 ` Khalid Aziz
2018-03-05 21:26 ` Dave Hansen [this message]
2018-03-05 21:37 ` Khalid Aziz
2018-03-05 21:50 ` Dave Hansen
2018-02-21 17:15 ` [PATCH v12 11/11] sparc64: Update signal delivery to use new helper functions Khalid Aziz
2018-02-21 20:59 ` Eric W. Biederman
2018-03-18 15:08 ` [PATCH v12 00/11] Application Data Integrity feature introduced by SPARC M7 David Miller
2018-03-19 15:19 ` Khalid Aziz
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