From: David Hildenbrand <david@redhat.com>
To: Dave Hansen <dave.hansen@intel.com>,
Brendan Jackman <jackmanb@google.com>,
Andy Lutomirski <luto@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>
Cc: peterz@infradead.org, bp@alien8.de, dave.hansen@linux.intel.com,
mingo@redhat.com, tglx@linutronix.de, akpm@linux-foundation.org,
derkling@google.com, junaids@google.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
reijiw@google.com, rientjes@google.com, rppt@kernel.org,
vbabka@suse.cz, x86@kernel.org,
Yosry Ahmed <yosry.ahmed@linux.dev>
Subject: Re: [PATCH 00/21] mm: ASI direct map management
Date: Thu, 2 Oct 2025 09:34:59 +0200 [thread overview]
Message-ID: <fc52e463-5704-4713-9c91-1e4fa0d58047@redhat.com> (raw)
In-Reply-To: <00e7ff5e-fe6c-4edc-9bf8-2352321f74dc@intel.com>
On 01.10.25 22:59, Dave Hansen wrote:
> On 9/24/25 07:59, Brendan Jackman wrote:
>> Why is this the scope of the first series? The objective here is to
>> reach a MVP of ASI that people can actually run, as soon as possible.
>
> I had to ask ChatGPT what you meant by MVP. Minimum Viable Product?
>
> So this series just creates a new address space and then ensures that
> sensitive data is not mapped there? To me, that's a proof-of-concept,
> not a bit of valuable functionality that can be merged upstream.
>
> I'm curious how far the first bit of functionality that would be useful
> to end users is from the end of this series.
There was this mail "[Discuss] First steps for ASI (ASI is fast
again)"[1] that I also didn't get to fully digest yet, where there was a
question at the very end
"
Once we have some x86 maintainers saying "yep, it looks like this can
work and it's something we want", I can start turning my page_alloc RFC
[3] into a proper patchset (or maybe multiple if I can find a way to
break things down further).
...
So, x86 folks: Does this feel like "line of sight" to you? If not, what
would that look like, what experiments should I run?
"
Unless I am missing something, no x86 maintainer replied to that one so
far and I assume this patch set here is the revival of above mentioned RFC
"
so it might be reasonable to reply there.
[1]
https://lore.kernel.org/all/20250812173109.295750-1-jackmanb@google.com/T/#u
--
Cheers
David / dhildenb
next prev parent reply other threads:[~2025-10-02 7:35 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 14:59 Brendan Jackman
2025-09-24 14:59 ` [PATCH 01/21] x86/mm/asi: Add CONFIG_MITIGATION_ADDRESS_SPACE_ISOLATION Brendan Jackman
2025-10-24 22:37 ` Borislav Petkov
2025-10-24 23:32 ` Brendan Jackman
2025-10-25 9:57 ` Borislav Petkov
2025-09-24 14:59 ` [PATCH 02/21] x86/mm/asi: add X86_FEATURE_ASI and asi= Brendan Jackman
2025-10-25 10:06 ` Borislav Petkov
2025-10-26 22:24 ` Brendan Jackman
2025-11-10 11:26 ` Borislav Petkov
2025-11-10 12:15 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 03/21] x86/mm: factor out phys_pgd_init() Brendan Jackman
2025-09-27 19:29 ` kernel test robot
2025-10-01 12:26 ` Brendan Jackman
2025-10-25 11:48 ` Borislav Petkov
2025-10-26 22:29 ` Brendan Jackman
2025-11-10 11:38 ` Borislav Petkov
2025-11-10 12:36 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 04/21] x86/mm/asi: set up asi_nonsensitive_pgd Brendan Jackman
2025-10-01 20:28 ` Dave Hansen
2025-10-02 14:05 ` Brendan Jackman
2025-10-02 16:14 ` Dave Hansen
2025-10-02 17:19 ` Brendan Jackman
2025-11-12 19:39 ` Dave Hansen
2025-11-11 14:55 ` Borislav Petkov
2025-11-11 17:53 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 05/21] x86/mm/pat: mirror direct map changes to ASI Brendan Jackman
2025-09-25 13:36 ` kernel test robot
2025-10-01 20:50 ` Dave Hansen
2025-10-02 14:31 ` Brendan Jackman
2025-10-02 16:40 ` Dave Hansen
2025-10-02 17:08 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 06/21] mm/page_alloc: add __GFP_SENSITIVE and always set it Brendan Jackman
2025-10-01 21:18 ` Dave Hansen
2025-10-02 14:34 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 07/21] mm: introduce for_each_free_list() Brendan Jackman
2025-09-24 14:59 ` [PATCH 08/21] mm: rejig pageblock mask definitions Brendan Jackman
2025-09-24 14:59 ` [PATCH 09/21] mm/page_alloc: Invert is_check_pages_enabled() check Brendan Jackman
2025-09-24 14:59 ` [PATCH 10/21] mm/page_alloc: remove ifdefs from pindex helpers Brendan Jackman
2025-09-24 14:59 ` [PATCH 11/21] mm: introduce freetype_t Brendan Jackman
2025-09-25 13:15 ` kernel test robot
2025-10-01 21:20 ` Dave Hansen
2025-10-02 14:39 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 12/21] mm/asi: encode sensitivity in freetypes and pageblocks Brendan Jackman
2025-09-24 14:59 ` [PATCH 13/21] mm/page_alloc_test: unit test pindex helpers Brendan Jackman
2025-09-25 13:36 ` kernel test robot
2025-09-24 14:59 ` [PATCH 14/21] x86/mm/pat: introduce cpa_fault option Brendan Jackman
2025-09-24 14:59 ` [PATCH 15/21] mm/page_alloc: rename ALLOC_NON_BLOCK back to _HARDER Brendan Jackman
2025-09-24 14:59 ` [PATCH 16/21] mm/page_alloc: introduce ALLOC_NOBLOCK Brendan Jackman
2025-09-24 14:59 ` [PATCH 17/21] mm/slub: defer application of gfp_allowed_mask Brendan Jackman
2025-09-24 14:59 ` [PATCH 18/21] mm/asi: support changing pageblock sensitivity Brendan Jackman
2025-09-24 14:59 ` [PATCH 19/21] mm/asi: bad_page() when ASI mappings are wrong Brendan Jackman
2025-09-24 14:59 ` [PATCH 20/21] x86/mm/asi: don't use global pages when ASI enabled Brendan Jackman
2025-09-24 14:59 ` [PATCH 21/21] mm: asi_test: smoke test for [non]sensitive page allocs Brendan Jackman
2025-09-25 17:51 ` [PATCH 00/21] mm: ASI direct map management Brendan Jackman
2025-09-30 19:51 ` Konrad Rzeszutek Wilk
2025-10-01 7:12 ` Brendan Jackman
2025-10-01 19:54 ` Dave Hansen
2025-10-01 20:22 ` Yosry Ahmed
2025-10-01 20:30 ` Dave Hansen
2025-10-02 11:05 ` Brendan Jackman
2025-10-01 20:59 ` Dave Hansen
2025-10-02 7:34 ` David Hildenbrand [this message]
2025-10-02 11:23 ` Brendan Jackman
2025-10-02 17:01 ` Dave Hansen
2025-10-02 19:19 ` Brendan Jackman
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