From: Andrew Morton <akpm@linux-foundation.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ryan Roberts <ryan.roberts@arm.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
Matthew Wilcox <willy@infradead.org>,
Yin Fengwei <fengwei.yin@intel.com>,
David Hildenbrand <david@redhat.com>, Yu Zhao <yuzhao@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Yang Shi <shy828301@gmail.com>,
"Huang, Ying" <ying.huang@intel.com>, Zi Yan <ziy@nvidia.com>,
Luis Chamberlain <mcgrof@kernel.org>,
Itaru Kitayama <itaru.kitayama@gmail.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
John Hubbard <jhubbard@nvidia.com>,
David Rientjes <rientjes@google.com>,
Vlastimil Babka <vbabka@suse.cz>, Hugh Dickins <hughd@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v6 4/9] mm: thp: Introduce anon_orders and anon_always_mask sysfs files
Date: Mon, 9 Oct 2023 17:20:29 -0700 [thread overview]
Message-ID: <20231009172029.e558c08dd90d9b94fec3a036@linux-foundation.org> (raw)
In-Reply-To: <87fs2mrqld.fsf@mail.lhotse>
On Sun, 08 Oct 2023 09:54:22 +1100 Michael Ellerman <mpe@ellerman.id.au> wrote:
> > I don't know why powerpc's PTE_INDEX_SIZE is variable.
>
> To allow a single vmlinux to boot using either the Hashed Page Table
> MMU, or Radix Tree MMU, which have different page table geometry.
>
> That's a pretty crucial feature for distros, so that they can build a
> single kernel to boot on Power8/9/10.
Dumb question: why can't distros ship two kernels and have the boot
loader (or something else) pick the appropriate one?
next prev parent reply other threads:[~2023-10-10 0:21 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-29 11:44 [PATCH v6 0/9] variable-order, large folios for anonymous memory Ryan Roberts
2023-09-29 11:44 ` [PATCH v6 1/9] mm: Allow deferred splitting of arbitrary anon large folios Ryan Roberts
2023-10-05 8:19 ` David Hildenbrand
2023-09-29 11:44 ` [PATCH v6 2/9] mm: Non-pmd-mappable, large folios for folio_add_new_anon_rmap() Ryan Roberts
2023-09-29 13:45 ` Kirill A. Shutemov
2023-09-29 14:39 ` Ryan Roberts
2023-09-29 11:44 ` [PATCH v6 3/9] mm: thp: Account pte-mapped anonymous THP usage Ryan Roberts
2023-09-29 11:44 ` [PATCH v6 4/9] mm: thp: Introduce anon_orders and anon_always_mask sysfs files Ryan Roberts
2023-09-29 22:55 ` Andrew Morton
2023-10-02 10:15 ` Ryan Roberts
2023-10-07 22:54 ` Michael Ellerman
2023-10-10 0:20 ` Andrew Morton [this message]
2023-10-12 9:31 ` David Hildenbrand
2023-10-12 11:07 ` Michael Ellerman
2023-10-11 6:02 ` kernel test robot
2023-09-29 11:44 ` [PATCH v6 5/9] mm: thp: Extend THP to allocate anonymous large folios Ryan Roberts
[not found] ` <CGME20231005120507eucas1p13f50fa99f52808818840ee7db194e12e@eucas1p1.samsung.com>
2023-10-05 12:05 ` Daniel Gomez
2023-10-05 12:49 ` Ryan Roberts
2023-10-05 14:59 ` Daniel Gomez
2023-10-27 23:04 ` John Hubbard
2023-10-30 11:43 ` Ryan Roberts
2023-10-30 23:25 ` John Hubbard
2023-11-01 13:56 ` Ryan Roberts
2023-09-29 11:44 ` [PATCH v6 6/9] mm: thp: Add "recommend" option for anon_orders Ryan Roberts
2023-10-06 20:08 ` David Hildenbrand
2023-10-06 22:28 ` Yu Zhao
2023-10-09 11:45 ` Ryan Roberts
2023-10-09 14:43 ` David Hildenbrand
2023-10-09 20:04 ` Yu Zhao
2023-10-10 10:16 ` Ryan Roberts
2023-09-29 11:44 ` [PATCH v6 7/9] arm64/mm: Override arch_wants_pte_order() Ryan Roberts
2023-10-02 15:21 ` Catalin Marinas
2023-10-03 7:32 ` Ryan Roberts
2023-10-03 12:05 ` Catalin Marinas
2023-09-29 11:44 ` [PATCH v6 8/9] selftests/mm/cow: Generalize do_run_with_thp() helper Ryan Roberts
2023-09-29 11:44 ` [PATCH v6 9/9] selftests/mm/cow: Add tests for small-order anon THP Ryan Roberts
2023-10-06 20:06 ` [PATCH v6 0/9] variable-order, large folios for anonymous memory David Hildenbrand
2023-10-09 11:28 ` Ryan Roberts
2023-10-09 16:22 ` David Hildenbrand
2023-10-10 10:47 ` Ryan Roberts
2023-10-13 20:14 ` David Hildenbrand
2023-10-20 12:33 ` Ryan Roberts
2023-10-25 16:24 ` Ryan Roberts
2023-10-25 18:47 ` David Hildenbrand
2023-10-25 19:11 ` Yu Zhao
2023-10-26 9:53 ` Ryan Roberts
2023-10-26 15:19 ` David Hildenbrand
2023-10-25 19:10 ` John Hubbard
2023-10-31 11:50 ` Ryan Roberts
2023-10-31 11:55 ` Ryan Roberts
2023-10-31 12:03 ` David Hildenbrand
2023-10-31 13:13 ` Ryan Roberts
2023-10-31 18:29 ` Yang Shi
2023-11-01 14:02 ` Ryan Roberts
2023-11-01 18:11 ` Yang Shi
2023-10-31 11:58 ` David Hildenbrand
2023-10-31 13:12 ` Ryan Roberts
2023-11-13 3:57 ` John Hubbard
2023-11-13 5:18 ` Matthew Wilcox
2023-11-13 10:19 ` Ryan Roberts
2023-11-13 11:52 ` Kefeng Wang
2023-11-13 12:12 ` Ryan Roberts
2023-11-13 14:52 ` Kefeng Wang
2023-11-13 14:52 ` John Hubbard
2023-11-13 15:04 ` Matthew Wilcox
2023-11-14 10:57 ` Ryan Roberts
2023-12-05 16:05 ` Matthew Wilcox
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