linux-kernel - Re: Linux 6.11-rc1

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Message-ID: <87bk2d5v83.ffs@tglx>
Date: Wed, 31 Jul 2024 19:26:04 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Peter Zijlstra <peterz@...radead.org>, Linus Torvalds
 <torvalds@...ux-foundation.org>
Cc: Guenter Roeck <linux@...ck-us.net>, Jens Axboe <axboe@...nel.dk>, Andy
 Lutomirski <luto@...nel.org>, Ingo Molnar <mingo@...hat.com>, Peter Anvin
 <hpa@...or.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
 the arch/x86 maintainers <x86@...nel.org>
Subject: Re: Linux 6.11-rc1

On Wed, Jul 31 2024 at 18:51, Peter Zijlstra wrote:
> On Wed, Jul 31, 2024 at 06:31:05PM +0200, Peter Zijlstra wrote:
> Thomas, this all still relies on the full text section being PMD mapped,
> and since we don't have ALIGN_ENTRY_TEXT_END and _etext has PAGE_SIZE
> alignment, can't have a PAGE mapped tail which then doesn't get cloned?
>
> Do we want to make pto_clone_entry_text() use PTI_LEVEL_KERNEL_IMAGE
> such that it will clone whatever it has?

Yes, I think so.