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Date: Tue, 5 Feb 2019 15:29:35 -0800 From: Matthew Wilcox <willy@...radead.org> To: Kees Cook <keescook@...omium.org> Cc: Andrew Morton <akpm@...ux-foundation.org>, Dan Williams <dan.j.williams@...el.com>, Dave Hansen <dave.hansen@...ux.intel.com>, Michal Hocko <mhocko@...e.com>, Linux-MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>, Keith Busch <keith.busch@...el.com> Subject: Re: [PATCH v10 1/3] mm: Shuffle initial free memory to improve memory-side-cache utilization On Tue, Feb 05, 2019 at 11:11:06PM +0000, Kees Cook wrote: > FWIW, distros have enabled it by default for a while. Here's Ubuntu, > for example: > > and Fedora too: Also Debian: $ grep SLAB_FREELIST /boot/config-4.19.0-1-amd64 CONFIG_SLAB_FREELIST_RANDOM=y CONFIG_SLAB_FREELIST_HARDENED=y linux (4.15.4-1) unstable; urgency=medium * Switch to SLUB as kernel allocator. (Closes: #862718) - Enable SLUB_DEBUG, SLAB_FREELIST_HARDENED except on armel/marvell. (Closes: #883069)
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