From: Borislav Petkov <bp@alien8.de>
To: Brendan Jackman <jackmanb@google.com>
Cc: "Vlastimil Babka (SUSE)" <vbabka@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Wei Xu <weixugc@google.com>, Johannes Weiner <hannes@cmpxchg.org>,
Zi Yan <ziy@nvidia.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org,
rppt@kernel.org, Sumit Garg <sumit.garg@oss.qualcomm.com>,
derkling@google.com, reijiw@google.com,
Will Deacon <will@kernel.org>,
rientjes@google.com, "Kalyazin, Nikita" <kalyazin@amazon.co.uk>,
patrick.roy@linux.dev, "Itazuri, Takahiro" <itazur@amazon.co.uk>,
Andy Lutomirski <luto@kernel.org>,
David Kaplan <david.kaplan@amd.com>,
Thomas Gleixner <tglx@kernel.org>,
Yosry Ahmed <yosry.ahmed@linux.dev>
Subject: Re: [PATCH RFC 00/19] mm: Add __GFP_UNMAPPED
Date: Fri, 6 Mar 2026 15:41:25 +0100 [thread overview]
Message-ID: <20260306144125.GIaarnleCxQjM2Ocm6@fat_crate.local> (raw)
In-Reply-To: <DGUT0WT67V0F.32RH4R5HZ91VP@google.com>
On Thu, Mar 05, 2026 at 11:16:07AM +0000, Brendan Jackman wrote:
> Ultimately the fact that we have KPTI for 32-bit makes it sound like we
> would also want ASI for 32-bit, so I guess I would still want to add a
> GFP flag to support that on 32-bit. But that's a pretty futuristic
> problem, I would say we should focus on __GFP_UNMAPPED in isolation
> right now.
I'd wait until someone really really presents a valid use case to not move to
64-bit. And then justify the effort for adding and supporting ASI on 32-bit.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2026-03-06 14:42 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-25 16:34 Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 01/19] x86/mm: split out preallocate_sub_pgd() Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 02/19] x86/mm: Generalize LDT remap into "mm-local region" Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 03/19] x86/tlb: Expose some flush function declarations to modules Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 04/19] x86/mm: introduce the mermap Brendan Jackman
2026-02-27 10:47 ` Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 05/19] mm: KUnit tests for " Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 06/19] mm: introduce for_each_free_list() Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 07/19] mm/page_alloc: don't overload migratetype in find_suitable_fallback() Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 08/19] mm: introduce freetype_t Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 09/19] mm: move migratetype definitions to freetype.h Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 10/19] mm: add definitions for allocating unmapped pages Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 11/19] mm: rejig pageblock mask definitions Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 12/19] mm: encode freetype flags in pageblock flags Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 13/19] mm/page_alloc: remove ifdefs from pindex helpers Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 14/19] mm/page_alloc: separate pcplists by freetype flags Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 15/19] mm/page_alloc: rename ALLOC_NON_BLOCK back to _HARDER Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 16/19] mm/page_alloc: introduce ALLOC_NOBLOCK Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 17/19] mm/page_alloc: implement __GFP_UNMAPPED allocations Brendan Jackman
2026-02-27 10:56 ` Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 18/19] mm/page_alloc: implement __GFP_UNMAPPED|__GFP_ZERO allocations Brendan Jackman
2026-02-27 11:04 ` Brendan Jackman
2026-02-25 16:34 ` [PATCH RFC 19/19] mm: Minimal KUnit tests for some new page_alloc logic Brendan Jackman
2026-03-02 15:36 ` [PATCH RFC 00/19] mm: Add __GFP_UNMAPPED Vlastimil Babka (SUSE)
2026-03-05 11:16 ` Brendan Jackman
2026-03-06 14:41 ` Borislav Petkov [this message]
2026-03-05 14:51 ` Kevin Brodsky
2026-03-05 15:58 ` Brendan Jackman
2026-03-06 12:31 ` Kevin Brodsky
2026-03-06 18:17 ` Mike Rapoport
2026-03-06 17:38 ` Edgecombe, Rick P
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