From: Dave Hansen <dave.hansen@intel.com>
To: Ingo Molnar <mingo@kernel.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Jonathan Corbet <corbet@lwn.net>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ard Biesheuvel <ardb@kernel.org>,
Jan Kiszka <jan.kiszka@siemens.com>,
Kieran Bingham <kbingham@kernel.org>,
Michael Roth <michael.roth@amd.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Sandipan Das <sandipan.das@amd.com>,
Juergen Gross <jgross@suse.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-efi@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCHv3 2/4] x86/64/mm: Make SPARSEMEM_VMEMMAP the only memory model
Date: Fri, 16 May 2025 08:03:31 -0700 [thread overview]
Message-ID: <a0ca765c-a506-4c1f-a38c-24a8074988df@intel.com> (raw)
In-Reply-To: <aCdGzpXSVx15gz90@gmail.com>
On 5/16/25 07:08, Ingo Molnar wrote:
>> And is there any value to support !SPARSEMEM_VMEMMAP?
> Not really IMHO:
>
> .config.opensuse.default: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
> .config.ubuntu.localinstall: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
> .config.fedora.generic: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
> .config.rhel.generic: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
I look at the distro configs all the time as well.
But let's also not forget that none of these have lockdep turned on, and
we don't want to toss out lockdep support on x86, for example. ;)
next prev parent reply other threads:[~2025-05-16 15:03 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-16 12:33 [PATCHv3 0/4] x86: Make 5-level paging support unconditional for x86-64 Kirill A. Shutemov
2025-05-16 12:33 ` [PATCHv3 1/4] x86/64/mm: Always use dynamic memory layout Kirill A. Shutemov
2025-05-16 12:33 ` [PATCHv3 2/4] x86/64/mm: Make SPARSEMEM_VMEMMAP the only memory model Kirill A. Shutemov
2025-05-16 13:42 ` Dave Hansen
2025-05-16 13:45 ` Ingo Molnar
2025-05-16 14:59 ` Dave Hansen
2025-05-16 15:08 ` Dave Hansen
2025-05-16 14:01 ` Kirill A. Shutemov
2025-05-16 14:08 ` Ingo Molnar
2025-05-16 15:03 ` Dave Hansen [this message]
2025-05-16 15:35 ` Ingo Molnar
2025-05-16 15:46 ` Dave Hansen
2025-05-16 18:28 ` H. Peter Anvin
2025-05-16 15:01 ` Dave Hansen
2025-05-16 12:33 ` [PATCHv3 3/4] x86/64/mm: Make 5-level paging support unconditional Kirill A. Shutemov
2025-05-16 12:33 ` [PATCHv3 4/4] x86/paravirt: Restrict PARAVIRT_XXL to 64-bit only Kirill A. Shutemov
2025-05-16 12:43 ` Jürgen Groß
2025-05-16 13:11 ` [PATCHv3 0/4] x86: Make 5-level paging support unconditional for x86-64 Ingo Molnar
2025-05-16 13:17 ` Kirill A. Shutemov
2025-05-17 9:59 ` Borislav Petkov
2025-06-24 8:23 ` [PATCHv2 0/3] " Khalid Ali
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