From: Dave Hansen <dave.hansen@intel.com>
To: Kiryl Shutsemau <kas@kernel.org>
Cc: Usama Arif <usamaarif642@gmail.com>,
dwmw@amazon.co.uk, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, ardb@kernel.org,
hpa@zytor.com, x86@kernel.org, apopple@nvidia.com,
thuth@redhat.com, nik.borisov@suse.com,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
kernel-team@meta.com,
Michael van der Westhuizen <rmikey@meta.com>,
Tobias Fleig <tfleig@meta.com>
Subject: Re: [PATCH 3/3] x86/mm: Move _PAGE_BIT_NOPTISHADOW from bit 58 to bit 9
Date: Thu, 23 Oct 2025 08:12:32 -0700 [thread overview]
Message-ID: <49769803-ad4a-4e15-a691-fd512b667ade@intel.com> (raw)
In-Reply-To: <yv2sjut5urpzz426z4wmufshbron35ohwtqk6jzun46elbcqtf@3z54nh33yl4m>
On 10/23/25 07:24, Kiryl Shutsemau wrote:
> The last patch allows us to only update the kernel that has 5-level
> paging enabled, making it much easier logistically.
>
> The fix seems trivial, and I don't see any downsides.
What I'm hearing is: Please change mainline so $COMPANY can do fewer
backports.
Yeah, it's pretty trivial. But I'm worried about the precedent, and I'm
worried that the change doesn't do a thing for mainline. It's pure
churn. Churn has inherent downsides.
I'd urge you to kick this out of the series and focus on the bug fixes
that are unambiguously good for everyone. Let's have a nice big flamewar
in another thread.
next prev parent reply other threads:[~2025-10-23 15:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-22 22:06 [PATCH 0/3] x86: Fix kexec 5-level to 4-level paging transition Usama Arif
2025-10-22 22:06 ` [PATCH 1/3] x86/boot: Fix page table access in " Usama Arif
2025-10-22 23:16 ` Dave Hansen
2025-10-22 23:49 ` Usama Arif
2025-10-25 21:50 ` H. Peter Anvin
2025-10-23 17:43 ` kernel test robot
2025-10-24 8:07 ` kernel test robot
2025-10-22 22:06 ` [PATCH 2/3] efi/libstub: " Usama Arif
2025-10-23 14:13 ` Ard Biesheuvel
2025-10-23 14:28 ` Kiryl Shutsemau
2025-10-22 22:06 ` [PATCH 3/3] x86/mm: Move _PAGE_BIT_NOPTISHADOW from bit 58 to bit 9 Usama Arif
2025-10-22 23:35 ` Dave Hansen
2025-10-22 23:58 ` Usama Arif
2025-10-23 14:05 ` Dave Hansen
2025-10-23 14:24 ` Kiryl Shutsemau
2025-10-23 15:12 ` Dave Hansen [this message]
2025-10-23 15:25 ` Kiryl Shutsemau
2025-10-23 22:15 ` Usama Arif
2025-10-22 22:25 ` [PATCH 0/3] x86: Fix kexec 5-level to 4-level paging transition Usama Arif
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