linux-kernel - Re: [REGRESSION] Re: [PATCH v7 8/8] x86/module: enable ROX caches for module text on 64 bit

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Message-ID: <20250112190755.GCZ4QTC01KzoZkxel9@fat_crate.local>
Date: Sun, 12 Jan 2025 20:07:55 +0100
From: Borislav Petkov <bp@...en8.de>
To: Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc: Mike Rapoport <rppt@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Andreas Larsson <andreas@...sler.com>,
	Andy Lutomirski <luto@...nel.org>, Ard Biesheuvel <ardb@...nel.org>,
	Arnd Bergmann <arnd@...db.de>, Brian Cain <bcain@...cinc.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Christoph Hellwig <hch@...radead.org>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Dinh Nguyen <dinguyen@...nel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Guo Ren <guoren@...nel.org>, Helge Deller <deller@....de>,
	Huacai Chen <chenhuacai@...nel.org>, Ingo Molnar <mingo@...hat.com>,
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Subject: Re: [REGRESSION] Re: [PATCH v7 8/8] x86/module: enable ROX caches
 for module text on 64 bit

On Sun, Jan 12, 2025 at 08:42:05PM +0200, Ville Syrjälä wrote:
> On Wed, Oct 23, 2024 at 07:27:11PM +0300, Mike Rapoport wrote:
> > From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>
> > 
> > Enable execmem's cache of PMD_SIZE'ed pages mapped as ROX for module
> > text allocations on 64 bit.
> 
> Hi,
> 
> This breaks resume from hibernation on my Alderlake laptop.
> 
> Fortunately this still reverts cleanly.

Does that hunk in the mail here fix it?

https://lore.kernel.org/all/Z4DwPkcYyZ-tDKwY@kernel.org/

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette